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Cheap flights from St. Louis (STL) to Washington, D.C. (WAS) from $55

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
STL — WAS
Jun 9 — Jun 161
From?
To?
Sun 6/9
Sun 6/16
1 adult, Economy
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The best prices from Lambert-St Louis to Washington, D.C. are usually found in January or February, booked 62 days in advance, depart on a Saturday or Friday and return on a Saturday

Cheap flight deals from St. Louis to Washington, D.C.

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Washington, D.C. (WAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 4, 2024.

Popular in

June

Cheapest in

January

Round-trip from

$236

One-way from

$105
High demand for flights, 16% potential price rise
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Best time to find cheap flights, 25% potential price drop
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From Lambert-St Louis to Washington, D.C. (WAS)
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One-way flight from Lambert-St Louis to Washington, D.C. (WAS)
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What is the cheapest day to fly round-trip from St. Louis to Washington, D.C.?

Flights from St. Louis to Washington, D.C. are found to be more expensive on Saturday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Washington, D.C..

How far in advance should I book a flight from St. Louis to Washington, D.C.?

Travelers have found it’s best to book a flight 53 days in advance to save up to 108% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 53 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from St. Louis to Washington, D.C. 1-2 weeks in advance for as low as $327, or $466 for flights within the next 24 hours.

What is the cheapest month to fly from St. Louis to Washington, D.C.?

Due to multiple factors, expect to potentially pay more when booking in June. For low rates, January can be a great choice for travel to Washington, D.C.. Flights to Washington, D.C. from St. Louis in January are about $276 on average during January, but can be found for as low as $108.

What is the cheapest time of day to fly from STL to WAS?

It’s typically best to fly out from St. Louis to Washington, D.C. in the evening. Doing so could potentially save you 49% on the flight price compared to flying at noon, which is usually more expensive.

Cheap United Airlines flights from St. Louis to Washington, D.C.

Explore cheap flight options specifically provided by United Airlines for the route between St. Louis and Washington, D.C.. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,824,458 searches. Data last updated June 4, 2024.
Take a look at some of the lowest-priced United Airlines flights heading from St. Louis to Washington, D.C.. Come back soon if you're not finding the exact deal you're looking for.
Wed 9/48:25 amSTL - IAD
Nonstop2h 08mUnited Airlines
Sat 9/78:35 amIAD - STL
Nonstop2h 21mUnited Airlines
Deal found 6/3$169
Wed 9/49:30 amSTL - IAD
1 stop5h 28mUnited Airlines
Sat 9/78:35 amIAD - STL
Nonstop2h 21mUnited Airlines
Deal found 6/3$179
Fri 7/58:25 amSTL - IAD
Nonstop2h 10mUnited Airlines
Sat 7/66:00 amIAD - STL
1 stop5h 25mUnited Airlines
Deal found 6/3$199
Fri 7/55:30 pmSTL - IAD
1 stop6h 00mUnited Airlines
Sat 7/66:00 amIAD - STL
1 stop5h 25mUnited Airlines
Deal found 6/3$204
Wed 6/268:25 amSTL - IAD
Nonstop2h 10mUnited Airlines
Sat 7/66:00 amIAD - STL
1 stop5h 25mUnited Airlines
Deal found 6/3$209
Mon 8/195:20 pmSTL - IAD
1 stop5h 55mUnited Airlines
Tue 8/208:25 amIAD - STL
1 stop4h 57mUnited Airlines
Deal found 6/3$214
Fri 8/231:15 pmSTL - IAD
Nonstop2h 08mUnited Airlines
Mon 8/268:35 amIAD - STL
Nonstop2h 21mUnited Airlines
Deal found 6/3$237
Sat 8/248:25 amSTL - IAD
Nonstop2h 08mUnited Airlines
Tue 8/278:35 amIAD - STL
Nonstop2h 21mUnited Airlines
Deal found 6/3$259
Fri 8/231:15 pmSTL - IAD
Nonstop2h 08mUnited Airlines
Tue 8/276:05 pmIAD - STL
Nonstop2h 24mUnited Airlines
Deal found 6/3$306

  • If you’re traveling from St. Louis to Washington, D.C., one of the more common airlines traveling that route is United Airlines. Flights from United Airlines traveling this route typically cost $377.33 RT. This price is typically 45% more expensive than other airlines that offer St. Louis to Washington, D.C. flights. When booking this route, the cheapest RT price found was $195. The most popular departure airport in St. Louis when flying to Washington, D.C. is Lambert-St Louis Airport. The most popular airport to fly into when visiting Washington, D.C. is Washington, D.C. Dulles Intl Airport. When flying from St. Louis to Washington, D.C., United Airlines flights are 6% more popular than any other airline flying that same route.

Cheap Delta flights from St. Louis to Washington, D.C.

Explore cheap flight options specifically provided by Delta for the route between St. Louis and Washington, D.C.. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,824,458 searches. Data last updated June 4, 2024.
Take a gander at the lowest prices we've found on Delta flights from St. Louis to Washington, D.C.. Check back soon if you're not seeing flights that suit your needs.
Wed 9/46:00 amSTL - IAD
1 stop5h 41mDelta
Sat 9/77:16 amIAD - STL
1 stop7h 08mDelta
Deal found 6/3$188
Tue 7/27:15 amSTL - DCA
1 stop6h 44mDelta
Tue 7/95:00 pmDCA - STL
1 stop5h 00mDelta
Deal found 6/2$198
Mon 7/14:02 pmSTL - IAD
1 stop6h 57mDelta
Fri 7/57:05 amIAD - STL
1 stop5h 55mDelta
Deal found 6/3$208
Tue 6/253:10 pmSTL - DCA
1 stop6h 20mDelta
Sat 7/66:05 amDCA - STL
1 stop4h 10mDelta
Deal found 6/3$218
Mon 6/107:06 pmSTL - BWI
1 stop4h 17mDelta
Tue 6/117:05 amBWI - STL
1 stop5h 56mDelta
Deal found 6/3$424
Wed 6/121:06 pmSTL - IAD
1 stop4h 13mDelta
Tue 6/186:00 amIAD - STL
1 stop4h 10mDelta
Deal found 6/3$433
Mon 6/106:10 pmSTL - IAD
1 stop3h 48mDelta
Tue 6/117:20 pmIAD - STL
1 stop5h 23mDelta
Deal found 6/3$692

  • One of the most popular airlines traveling from St. Louis to Washington, D.C. is Delta. Flights from Delta traveling this route typically cost $350.20 RT. This price is typically 54% cheaper than other airlines that offer St. Louis to Washington, D.C. flights. When booking this route, the cheapest RT price found was $191. Lambert-St Louis Airport is the most common St. Louis airport to take off from when flying to Washington, D.C.. Washington, D.C. Dulles Intl Airport is the most popular arrival airport in Washington, D.C.. When flying from St. Louis to Washington, D.C., Delta flights are 4% more popular than any other airline flying that same route.

Cheap St. Louis to Washington, D.C. flights in June & July 2024

Find cheap flight options from St. Louis to Washington, D.C. specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,824,458 searches. Prices were last updated on June 4, 2024.
Listed are some of the best fares we've found on flights departing from St. Louis to Washington, D.C. in 2024. For more flight deals, be sure to check back very soon.
Tue 6/253:23 pmSTL - BWI
1 stop16h 12mSpirit Airlines
Wed 6/2610:45 pmBWI - STL
1 stop19h 43mSpirit Airlines
Deal found 6/3$156
Mon 7/16:09 amSTL - DCA
Nonstop2h 02mAmerican Airlines
Mon 7/18:00 pmDCA - STL
Nonstop2h 28mAmerican Airlines
Deal found 6/2$169
Tue 6/253:23 pmSTL - BWI
1 stop16h 12mSpirit Airlines
Tue 7/96:00 amBWI - STL
2 stops9h 23mSpirit Airlines
Deal found 6/2$169
Tue 7/1610:11 amSTL - BWI
1 stop6h 15mSpirit Airlines
Thu 7/186:00 amBWI - STL
1 stop14h 59mSpirit Airlines
Deal found 6/3$177
Tue 7/25:42 pmSTL - DCA
Nonstop2h 01mAmerican Airlines
Tue 7/98:00 pmDCA - STL
Nonstop2h 29mAmerican Airlines
Deal found 6/2$179
Tue 6/253:23 pmSTL - BWI
1 stop16h 12mSpirit Airlines
Tue 7/95:45 amBWI - STL
1 stop6h 12mSpirit Airlines
Deal found 6/2$179
Tue 7/1610:11 amSTL - BWI
1 stop6h 15mSpirit Airlines
Thu 7/186:30 amBWI - STL
2 stops11h 59mSpirit Airlines
Deal found 6/3$183
Tue 6/113:23 pmSTL - BWI
1 stop8h 22mSpirit Airlines
Wed 6/128:18 amBWI - STL
2 stops34h 10mSpirit Airlines
Deal found 6/3$184
Mon 7/110:30 amSTL - DCA
1 stop7h 05mDelta
Fri 7/58:45 amDCA - STL
1 stop6h 45mDelta
Deal found 6/3$188

St. Louis to Washington, D.C. 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and Washington, D.C. in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,824,458 searches. Data last updated June 4, 2024.
Listed are some of the best fares we've found on flights departing from St. Louis to Washington, D.C. in 2024. For more flight deals, be sure to check back very soon.
Wed 9/44:31 pmSTL - BWI
1 stop25h 38mSpirit Airlines
Sat 9/76:49 amBWI - STL
1 stop11h 41mSpirit Airlines
Deal found 6/3$131
Mon 9/164:31 pmSTL - BWI
1 stop23h 41mSpirit Airlines
Sat 9/219:41 amBWI - STL
1 stop8h 49mSpirit Airlines
Deal found 6/3$146
Tue 9/1710:32 pmSTL - BWI
1 stop12h 31mFrontier
Mon 9/238:00 amBWI - STL
1 stop13h 20mFrontier
Deal found 6/3$152
Tue 6/253:23 pmSTL - BWI
1 stop16h 12mSpirit Airlines
Wed 6/2610:45 pmBWI - STL
1 stop19h 43mSpirit Airlines
Deal found 6/3$156
Tue 8/207:57 amSTL - BWI
1 stop13h 05mSpirit Airlines
Tue 8/2712:12 pmBWI - STL
1 stop19h 55mSpirit Airlines
Deal found 6/3$161
Wed 9/44:31 pmSTL - BWI
3 stops23h 59mSpirit Airlines
Sat 9/79:41 amBWI - STL
1 stop8h 49mSpirit Airlines
Deal found 6/3$164
Mon 9/164:31 pmSTL - BWI
1 stop23h 41mSpirit Airlines
Fri 9/206:40 pmBWI - STL
1 stop23h 50mSpirit Airlines
Deal found 6/3$165
Wed 9/44:31 pmSTL - BWI
2 stops27h 04mSpirit Airlines
Sat 9/76:49 amBWI - STL
1 stop11h 41mSpirit Airlines
Deal found 6/3$166
Thu 8/227:57 amSTL - BWI
2 stops26h 12mSpirit Airlines
Mon 8/268:55 amBWI - STL
2 stops23h 12mSpirit Airlines
Deal found 6/2$168

Non-stop flights to Washington, D.C. from St. Louis

Discover non-stop flight options from St. Louis to Washington, D.C.. Find direct flights with no layovers, providing a convenient travel experience. Explore non-stop flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 2,824,458 searches. Data last updated June 4, 2024.
To help reduce your travel time, choose from one of these non-stop flights from St. Louis to Washington, D.C.. Those looking to potentially save on 1 or 2-stop flights from St. Louis to Washington, D.C. should utilize the search form at the the top of the page.
Wed 9/48:25 amSTL - IAD
Nonstop2h 08mUnited Airlines
Sat 9/78:35 amIAD - STL
Nonstop2h 21mUnited Airlines
Deal found 6/3$169
Tue 7/26:09 amSTL - DCA
Nonstop2h 02mAmerican Airlines
Tue 7/93:26 pmDCA - STL
Nonstop2h 21mAmerican Airlines
Deal found 6/2$179
Tue 6/255:42 pmSTL - DCA
Nonstop2h 01mAmerican Airlines
Wed 6/268:00 pmDCA - STL
Nonstop2h 28mAmerican Airlines
Deal found 6/3$189
Thu 7/116:10 amSTL - DCA
Nonstop2h 01mAmerican Airlines
Tue 7/238:00 pmDCA - STL
Nonstop2h 29mAmerican Airlines
Deal found 6/3$199
Mon 8/198:25 amSTL - IAD
Nonstop2h 08mUnited Airlines
Tue 8/208:35 amIAD - STL
Nonstop2h 21mUnited Airlines
Deal found 6/3$199
Fri 8/236:12 amSTL - DCA
Nonstop1h 59mAmerican Airlines
Mon 8/268:02 pmDCA - STL
Nonstop2h 16mAmerican Airlines
Deal found 6/2$209
Mon 6/245:42 pmSTL - DCA
Nonstop2h 01mAmerican Airlines
Wed 6/268:00 pmDCA - STL
Nonstop2h 28mAmerican Airlines
Deal found 6/3$223
Thu 6/275:42 pmSTL - DCA
Nonstop2h 01mAmerican Airlines
Sun 6/308:00 pmDCA - STL
Nonstop2h 28mAmerican Airlines
Deal found 6/2$233
Fri 7/58:25 amSTL - IAD
Nonstop2h 10mUnited Airlines
Sat 7/68:15 amIAD - STL
Nonstop2h 07mUnited Airlines
Deal found 6/3$233

St. Louis to Washington, D.C. flights leaving soon

Find last-minute flight options from St. Louis to Washington, D.C. for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,824,458 searches. Data last updated June 4, 2024.
Check out these flights departing soon from St. Louis to Washington, D.C.. Users should double check the flight they book to ensure it matches the day, time, and destination they're looking for.
Tue 6/113:23 pmSTL - BWI
1 stop8h 22mSpirit Airlines
Wed 6/128:18 amBWI - STL
2 stops34h 10mSpirit Airlines
Deal found 6/3$184
Tue 6/113:23 pmSTL - BWI
1 stop8h 22mMultiple Airlines
Wed 6/128:18 amBWI - STL
3 stops33h 27mMultiple Airlines
Deal found 6/3$189
Wed 6/128:02 pmSTL - BWI
1 stop15h 37mFrontier
Tue 6/188:48 pmBWI - STL
1 stop13h 41mFrontier
Deal found 6/2$197
Tue 6/1111:57 amSTL - BWI
2 stops10h 54mSpirit Airlines
Wed 6/1910:45 pmBWI - STL
1 stop19h 43mSpirit Airlines
Deal found 6/3$207
Tue 6/1111:57 amSTL - BWI
1 stop7h 04mSpirit Airlines
Wed 6/1910:45 pmBWI - STL
1 stop19h 43mSpirit Airlines
Deal found 6/3$211
Wed 6/128:02 pmSTL - DCA
1 stop15h 03mFrontier
Tue 6/187:00 amDCA - STL
1 stop8h 47mFrontier
Deal found 6/2$212
Tue 6/1111:57 amSTL - BWI
2 stops10h 54mSpirit Airlines
Wed 6/196:30 amBWI - STL
3 stops37h 52mSpirit Airlines
Deal found 6/3$218
Tue 6/1111:57 amSTL - BWI
1 stop7h 04mMultiple Airlines
Tue 6/188:48 pmBWI - STL
1 stop13h 41mMultiple Airlines
Deal found 6/3$219
Tue 6/1111:57 amSTL - BWI
1 stop7h 04mSpirit Airlines
Wed 6/196:30 amBWI - STL
3 stops37h 52mSpirit Airlines
Deal found 6/3$223

One-way flights to Washington, D.C. from St. Louis

Search for one-way flight options from St. Louis to Washington, D.C.. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,824,458 searches. Data last updated June 4, 2024.
Users in need of a one-way flight from St. Louis to Washington, D.C. can choose from these deals. Users in need of a round-trip flight from St. Louis to Washington, D.C. instead should update the search form at the top of page.
Tue 6/113:23 pmSTL - BWI
1 stop16h 12mSpirit Airlines
Deal found 6/2$55
Tue 8/2010:32 pmSTL - BWI
1 stop12h 31mFrontier
Deal found 6/3$76
Tue 8/207:57 amSTL - BWI
2 stops10h 20mSpirit Airlines
Deal found 6/3$77
Thu 7/116:19 pmSTL - BWI
1 stop13h 21mSpirit Airlines
Deal found 6/2$83
Tue 6/1111:57 amSTL - BWI
2 stops19h 38mSpirit Airlines
Deal found 6/3$84
Wed 9/46:22 pmSTL - DCA
Nonstop2h 08mAmerican Airlines
Deal found 6/2$85
Tue 6/1111:57 amSTL - BWI
2 stops10h 54mSpirit Airlines
Deal found 6/3$87
Mon 7/16:00 amSTL - DCA
1 stop6h 18mDelta
Deal found 6/3$94
Mon 7/15:30 pmSTL - IAD
1 stop6h 00mUnited Airlines
Deal found 6/3$94

Find flights from St. Louis to Washington, D.C. within your budget

Customize your flight search to find flights from St. Louis to Washington, D.C. that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,824,458 searches. Data last updated June 4, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$131 - $255

Route

Depart

Return

Price

Lambert-St LouisBaltimore/Washington

STL - BWI

STLBWI

Lambert-St Louis

Wed 9/4

1 stop25h 38m

Baltimore/Washington

Sat 9/7

1 stop11h 41m

$131

Lambert-St LouisBaltimore/Washington

STL - BWI

STLBWI

Lambert-St Louis

Tue 6/25

1 stop16h 12m

Baltimore/Washington

Wed 6/26

1 stop19h 43m

$156

Lambert-St LouisBaltimore/Washington

STL - BWI

STLBWI

Lambert-St Louis

Tue 8/20

1 stop13h 05m

Baltimore/Washington

Tue 8/27

1 stop19h 55m

$161

Lambert-St LouisWashington, D.C. Reagan-National

STL - DCA

STLDCA

Lambert-St Louis

Mon 7/1

Nonstop2h 02m

Washington, D.C. Reagan-National

Mon 7/1

Nonstop2h 28m

$169

Lambert-St LouisWashington, D.C. Dulles Intl

STL - IAD

STLIAD

Lambert-St Louis

Wed 9/4

Nonstop2h 08m

Washington, D.C. Dulles Intl

Sat 9/7

Nonstop2h 21m

$169

Lambert-St LouisWashington, D.C. Reagan-National

STL - DCA

STLDCA

Lambert-St Louis

Mon 7/1

1 stop7h 05m

Washington, D.C. Reagan-National

Fri 7/5

1 stop6h 45m

$188

Lambert-St LouisBaltimore/Washington

STL - BWI

STLBWI

Lambert-St Louis

Fri 8/23

1 stop15h 03m

Baltimore/Washington

Mon 8/26

1 stop13h 20m

$197

Lambert-St LouisBaltimore/Washington

STL - BWI

STLBWI

Lambert-St Louis

Thu 7/4

1 stop13h 13m

Baltimore/Washington

Sun 7/7

1 stop15h 21m

$206

Lambert-St LouisWashington, D.C. Dulles Intl

STL - IAD

STLIAD

Lambert-St Louis

Fri 7/12

1 stop27h 12m

Washington, D.C. Dulles Intl

Sun 7/14

1 stop6h 22m

$255

Flights are sorted by cheapest first

Deals found on 6/3

How far ahead should I book a flight from St. Louis to Washington, D.C.?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Washington, D.C.. Price data was last updated on May 31, 2024.
Booking 62 days in advance of your planned departure date is, on average, the best time to get cheap flights from St. Louis to Washington, D.C.. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Search Deals

What is the cheapest day to fly from St. Louis to Washington, D.C.?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Washington, D.C.. Price data was last updated on June 2, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their St. Louis to Washington, D.C. flight should consider departing on Thursday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Best time to book a flight from St. Louis to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Temperature and rainfall in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average temperature and rainfall totals by month.

WAS

Temperature

35.6 - 80.6 °F

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington, D.C.. Reviews last updated June 4, 2024.
Peruse reviews from past customers who have flown with United Airlines, Delta and Sun Country Air from St. Louis to Washington, D.C. to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.1
Very good
9,214 reviews
Check prices

Boarding

8.2

Overall

8.1

Comfort

7.9

Food

7.3

Crew

8.6

Entertainment

7.3

Reviews

1 / 10

Crew and airport staff were excellent. They accommodated my needs and were super professional and kind.

Alaska Airlines
8.1
Very good
9,214 reviews
Alaska Airlines
8.1
Very good
9,214 reviews
Check prices

Boarding

8.2

Overall

8.1

Comfort

7.9

Food

7.3

Crew

8.6

Entertainment

7.3

Reviews

1 / 10

Crew and airport staff were excellent. They accommodated my needs and were super professional and kind.

Delta
8.0
Very good
10,392 reviews
Alaska Airlines
8.1
Very good
9,214 reviews
Check prices

Boarding

8.2

Overall

8.1

Comfort

7.9

Food

7.3

Crew

8.6

Entertainment

7.3

Reviews

1 / 10

Crew and airport staff were excellent. They accommodated my needs and were super professional and kind.

United Airlines
7.4
Good
10,740 reviews
Alaska Airlines
8.1
Very good
9,214 reviews
Check prices

Boarding

8.2

Overall

8.1

Comfort

7.9

Food

7.3

Crew

8.6

Entertainment

7.3

Reviews

1 / 10

Crew and airport staff were excellent. They accommodated my needs and were super professional and kind.

American Airlines
7.3
Good
14,241 reviews
Alaska Airlines
8.1
Very good
9,214 reviews
Check prices

Boarding

8.2

Overall

8.1

Comfort

7.9

Food

7.3

Crew

8.6

Entertainment

7.3

Reviews

1 / 10

Crew and airport staff were excellent. They accommodated my needs and were super professional and kind.

Sun Country Air
7.2
Good
594 reviews
Alaska Airlines
8.1
Very good
9,214 reviews
Check prices

Boarding

8.2

Overall

8.1

Comfort

7.9

Food

7.3

Crew

8.6

Entertainment

7.3

Reviews

1 / 10

Crew and airport staff were excellent. They accommodated my needs and were super professional and kind.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Washington, D.C.. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from St. Louis to Washington, D.C.?

    If you book a flight to Washington, D.C. from St. Louis, you will be flying from Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis. There are 11 flights from Lambert-St Louis to Washington, D.C. per day from 5 different airlines.

  • Can I find flights from St. Louis to Washington, D.C. for under $200 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Washington, D.C. for under $200. The cheapest flight booked recently is on Spirit Airlines for just $131, but on average you can expect to pay $170.

  • Are there nonstop flights from St. Louis to Washington, D.C. for under $200 on Cheapflights?

    Cheapflights has at least 20 direct flights from St. Louis to Washington, D.C. under $200. A good price for a nonstop flight from St. Louis to Washington, D.C. is less than $231.

  • Are there last-minute flights available from St. Louis to Washington, D.C. for under $200?

    There are currently 20+ open flights from St. Louis to Washington, D.C. within the next 7 days for less than $200.

  • What are the cheapest airlines flying from St. Louis to Washington, D.C. round-trip?

    Flying on Spirit Airlines is currently your cheapest option to Washington, D.C., with prices starting at $131. Additional round-trip tickets that might be worth considering are offered by American Airlines and United Airlines, with the lowest prices starting at $169 and $169, respectively. Spirit Airlines is 52% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from St. Louis to Washington, D.C. one-way?

    For one-way options, check prices for Spirit Airlines. According to our data, you can fly for as low as $55. Users have also found prices from $76 and $85 on Frontier and American Airlines, respectively.

  • What are the most popular routes from St. Louis to Washington, D.C.?

    The most popular route from St. Louis to Washington, D.C. is Lambert-St Louis - Washington, D.C. Dulles Intl. You may also consider Lambert-St Louis - Washington, D.C. Reagan-National or Lambert-St Louis - Baltimore/Washington.

  • What are the most reliable airlines from St. Louis to Washington, D.C.?

    The top 3 most reliable airlines when flying from St. Louis to Washington, D.C. are Avianca (95%), Copa Airlines (95%) and Scandinavian Airlines (93%).

  • What are the cheapest flights from St. Louis to Washington, D.C.?

    While on average a flight from St. Louis to Washington, D.C. is generally $1,103, our data shows the cheapest flight currently is $135. When looking at the most popular route, (Lambert-St Louis - Washington, D.C. Dulles Intl), you can expect to pay $208 for that flight.

  • What does STL to IAD mean?

    STL and IAD are unique codes to identify airports used in the aviation industry. They are defined by IATA (International Air Transport Association) and are commonly called IATA codes. STL to IAD refers to a flight route from Lambert-St Louis Airport to Washington, D.C. Dulles Intl Airport. Baltimore/Washington Airport (BWI), Washington, D.C. Reagan-National Airport (DCA) are some additional IATA codes for airports related to your trip.

  • Can I find deals for flights from St. Louis to Washington, D.C. that include extra baggage allowance?

    The amount of baggage you can bring on your St. Louis to Washington, D.C. flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from St. Louis to Washington, D.C. with specific airlines?

    Yes, Cheapflights allows you to browse and filter St. Louis to Washington, D.C. flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from St. Louis to Washington, D.C. that include hotel bookings?

    Yes. In addition to deals on St. Louis to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Washington, D.C.?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Washington, D.C..

  • Can I find deals for business class flights from St. Louis to Washington, D.C.?

    Yes. Cheapflights offers flight deals from St. Louis to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from St. Louis to Washington, D.C. that allow pets onboard?

    Many airlines flying from St. Louis to Washington, D.C. offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from St. Louis to Washington, D.C.?

    Yes, you can often find last-minute deals on St. Louis to Washington, D.C. flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the St. Louis to Washington, D.C. flight deals updated?

    The St. Louis to Washington, D.C. flight deals you see on this page were last updated on 6/3.

  • What are the most popular airlines that fly from St. Louis to Washington, D.C.?

    American Airlines, Delta and United Airlines are the most popular airlines when flying from St. Louis to Washington, D.C..

  • What is the cheapest month to book a flight from St. Louis to Washington, D.C.?

    Currently, September is the cheapest month in which you can book a flight from St. Louis to Washington, D.C. (average of $278). Flying from St. Louis to Washington, D.C. in June is currently the most expensive (average of $382). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Alternative routes for St. Louis to Washington, D.C.
See prices for flight routes from nearby airports that may be better suited for you.

Kansas City to Dulles Intl flights
St. Louis to Dulles Intl flights
Kansas City to Reagan-National flights
St. Louis to Reagan-National flights
Springfield to Dulles Intl flights
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Top 5 airlines flying from St. Louis to Washington, D.C.

Discover the top 5 airlines that operate flights from St. Louis to Washington, D.C.. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,824,458 searches. Data last updated June 4, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$100Average$185FlexibilityNo cancel feeOn-time62%
Search Frontier flights
Spirit AirlinesCheapest$144Average$193FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights
DeltaCheapest$167Average$304FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapest$191Average$350FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapest$195Average$377FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
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Search flights from St. Louis to Washington, D.C. by cabin class

Find flights from St. Louis to Washington, D.C., based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Hourly flight availability from St. Louis to Washington, D.C.

Find hourly flight availability from St. Louis to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 4, 2024.
7%of flight departuresEarly morningMidnight to 6 am
62%of flight departuresMorning6 am to noon
23%of flight departuresAfternoonNoon to 6 pm
8%of flight departuresEvening6 pm to midnight
Midnight
6 AM
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Weekly flight availability from St. Louis to Washington, D.C.

Explore weekly flight availability from St. Louis to Washington, D.C.. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 4, 2024.
Sunday10daily flights
Monday13daily flights
Tuesday12daily flights
Wednesday13daily flights
Thursday12daily flights
Friday13daily flights
Saturday10daily flights

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Need flexible booking options for your flight to Washington, D.C. from St. Louis? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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Yes! Start tracking prices for St. Louis to Washington, D.C. flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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