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Cheap flights from Helena to St. Louis (HLN - STL) from $224

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 6/21. 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.
HLN — STL
May 28 — Jun 41
From?
To?
Tue 5/28
Tue 6/4
1 adult, Economy
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Cheap flight deals from Helena to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Helena (HLN) to St. Louis (STL). 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 May 23, 2024.

Popular in

July

Cheapest in

January

Average price

$552

Round-trip from

$320
High demand for flights, 29% potential price rise
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Best time to find cheap flights, 35% potential price drop
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Average for round-trip flights in May 2024
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From Helena to Lambert-St Louis
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What is the cheapest day to fly round-trip from Helena to St. Louis?

Flying to your destination on a Friday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to St. Louis. Check prices with Cheapflights to find a great deal for your trip.

What is the cheapest month to fly from Helena to St. Louis?

The best pricing can be found in the month of January. Prices to St. Louis from Helena average $655. You can even find prices in January for less than $655, as users have found deals to St. Louis from as low as $426. The month of July appears to be one of the more expensive times to travel to St. Louis from Helena. Flying in the targeted month can save you up to 41%.

When is the cheapest time to fly from Helena to St. Louis (HLN - STL)?

It’s typically best to fly out from Helena to St. Louis in the afternoon. Doing so could potentially save you 26% on the flight price compared to flying in the morning, which is usually more expensive.

Cheap Delta flights from Helena to St. Louis

Explore cheap flight options specifically provided by Delta for the route between Helena and St. Louis. 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 2,730,072 searches. Data last updated May 23, 2024.
Peruse some of the lowest-priced Delta flights we've found from Helena to St. Louis. Make sure to check back often as deals are often changing.
Thu 7/256:00 amHLN - STL
1 stop6h 40mDelta
Wed 7/317:55 amSTL - HLN
1 stop5h 36mDelta
Deal found 5/21$448
Thu 7/256:00 amHLN - STL
1 stop6h 40mDelta
Wed 7/3110:08 amSTL - HLN
2 stops13h 24mDelta
Deal found 5/21$453
Tue 6/45:50 amHLN - STL
1 stop6h 42mDelta
Thu 6/206:25 pmSTL - HLN
1 stop5h 20mDelta
Deal found 5/21$538
Fri 7/191:11 pmHLN - STL
2 stops9h 28mDelta
Sun 7/217:55 amSTL - HLN
1 stop5h 36mDelta
Deal found 5/22$543
Thu 7/256:00 amHLN - STL
2 stops9h 20mDelta
Wed 7/312:16 pmSTL - HLN
2 stops9h 16mDelta
Deal found 5/21$653
Fri 7/191:11 pmHLN - STL
2 stops9h 28mDelta
Sun 7/213:28 pmSTL - HLN
2 stops8h 04mDelta
Deal found 5/22$698

Cheap Alaska Airlines flights from Helena to St. Louis

Explore cheap flight options specifically provided by Alaska Airlines for the route between Helena and St. Louis. 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 2,730,072 searches. Data last updated May 23, 2024.
Browse through some of the cheapest Alaska Airlines flights traveling from Helena to St. Louis. Check back soon if you're not seeing flights that suit your needs.
Thu 7/253:42 pmHLN - STL
1 stop7h 17mAlaska Airlines
Wed 7/317:00 amSTL - HLN
1 stop17h 59mAlaska Airlines
Deal found 5/23$510
Thu 8/157:00 amHLN - STL
1 stop15h 59mAlaska Airlines
Mon 8/197:00 amSTL - HLN
1 stop9h 05mAlaska Airlines
Deal found 5/22$520
Thu 7/253:42 pmHLN - STL
1 stop7h 17mAlaska Airlines
Wed 7/315:22 amSTL - HLN
2 stops10h 43mAlaska Airlines
Deal found 5/23$618
Tue 6/47:00 amHLN - STL
2 stops13h 47mAlaska Airlines
Thu 6/206:08 pmSTL - HLN
2 stops21h 57mAlaska Airlines
Deal found 5/21$680

Cheap Helena to St. Louis flights in May & June 2024

Find cheap flight options from Helena to St. Louis specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,730,072 searches. Prices were last updated on May 23, 2024.
Scroll through some of the best deals on flights from Helena to St. Louis in 2024. Check back regularly for other flight deals.
Tue 6/45:50 amHLN - STL
1 stop6h 42mDelta
Thu 6/206:25 pmSTL - HLN
1 stop5h 20mDelta
Deal found 5/21$538
Tue 6/46:53 amHLN - STL
2 stops30h 21mUnited Airlines
Thu 6/204:45 pmSTL - HLN
1 stop21h 54mUnited Airlines
Deal found 5/21$655
Tue 6/47:00 amHLN - STL
2 stops13h 47mAlaska Airlines
Thu 6/206:08 pmSTL - HLN
2 stops21h 57mAlaska Airlines
Deal found 5/21$680

Helena to St. Louis 2024 flight deals

Discover exclusive flight deals for travel between Helena and St. Louis in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,730,072 searches. Data last updated May 23, 2024.
Scroll through some of the best deals on flights from Helena to St. Louis in 2024. Check back regularly for other flight deals.
Thu 7/256:00 amHLN - STL
1 stop6h 40mDelta
Wed 7/317:55 amSTL - HLN
1 stop5h 36mDelta
Deal found 5/21$448
Thu 7/256:00 amHLN - STL
1 stop6h 40mDelta
Wed 7/3110:08 amSTL - HLN
2 stops13h 24mDelta
Deal found 5/21$453
Mon 8/196:45 amHLN - STL
1 stop4h 58mUnited Airlines
Thu 8/224:51 pmSTL - HLN
1 stop5h 29mUnited Airlines
Deal found 5/22$485
Thu 7/253:42 pmHLN - STL
1 stop7h 17mAlaska Airlines
Wed 7/317:00 amSTL - HLN
1 stop17h 59mAlaska Airlines
Deal found 5/23$510
Thu 8/157:00 amHLN - STL
1 stop15h 59mAlaska Airlines
Mon 8/197:00 amSTL - HLN
1 stop9h 05mAlaska Airlines
Deal found 5/22$520
Thu 8/156:45 amHLN - STL
2 stops12h 46mUnited Airlines
Mon 8/199:05 amSTL - HLN
1 stop5h 35mUnited Airlines
Deal found 5/22$533
Tue 6/45:50 amHLN - STL
1 stop6h 42mDelta
Thu 6/206:25 pmSTL - HLN
1 stop5h 20mDelta
Deal found 5/21$538
Fri 7/191:11 pmHLN - STL
2 stops9h 28mDelta
Sun 7/217:55 amSTL - HLN
1 stop5h 36mDelta
Deal found 5/22$543
Thu 7/256:45 amHLN - STL
1 stop14h 26mUnited Airlines
Wed 7/311:45 pmSTL - HLN
1 stop8h 33mUnited Airlines
Deal found 5/23$581

One-way flights to St. Louis from Helena

Search for one-way flight options from Helena to St. Louis. 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 2,730,072 searches. Data last updated May 23, 2024.
Some of the best available deals we've found on one-way flights from Helena to St. Louis. For those needing a return trip from Helena, there is a search form available above.
Fri 6/216:00 amHLN - STL
1 stop6h 34mDelta
Deal found 5/22$224
Thu 6/202:15 pmHLN - STL
1 stop5h 34mUnited Airlines
Deal found 5/22$264
Thu 7/186:45 amHLN - STL
1 stop5h 04mUnited Airlines
Deal found 5/22$299
Fri 6/211:19 pmHLN - STL
2 stops30h 58mDelta
Deal found 5/22$308
Sat 6/226:53 amHLN - STL
1 stop4h 53mUnited Airlines
Deal found 5/22$319
Thu 6/206:53 amHLN - STL
2 stops12h 32mUnited Airlines
Deal found 5/22$324
Mon 6/241:19 pmHLN - STL
2 stops30h 18mDelta
Deal found 5/22$325
Fri 6/216:00 amHLN - STL
1 stop6h 34mDelta
Deal found 5/22$329
Fri 6/212:15 pmHLN - STL
2 stops23h 01mUnited Airlines
Deal found 5/22$338

Find flights from Helena to St. Louis within your budget

Customize your flight search to find flights from Helena to St. Louis 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 2,730,072 searches. Data last updated May 23, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$448 - $588

Route

Depart

Return

Price

HelenaLambert-St Louis

HLN - STL

HLNSTL

Helena

Thu 7/25

1 stop6h 40m

Lambert-St Louis

Wed 7/31

1 stop5h 36m

$448

HelenaLambert-St Louis

HLN - STL

HLNSTL

Helena

Thu 7/25

1 stop6h 40m

Lambert-St Louis

Wed 7/31

2 stops13h 24m

$453

HelenaLambert-St Louis

HLN - STL

HLNSTL

Helena

Mon 8/19

1 stop4h 58m

Lambert-St Louis

Thu 8/22

1 stop5h 29m

$485

HelenaLambert-St Louis

HLN - STL

HLNSTL

Helena

Thu 7/25

1 stop7h 17m

Lambert-St Louis

Wed 7/31

1 stop17h 59m

$510

HelenaLambert-St Louis

HLN - STL

HLNSTL

Helena

Thu 8/15

1 stop15h 59m

Lambert-St Louis

Mon 8/19

1 stop9h 05m

$520

HelenaLambert-St Louis

HLN - STL

HLNSTL

Helena

Thu 8/15

2 stops12h 46m

Lambert-St Louis

Mon 8/19

1 stop5h 35m

$533

HelenaLambert-St Louis

HLN - STL

HLNSTL

Helena

Tue 6/4

1 stop6h 42m

Lambert-St Louis

Thu 6/20

1 stop5h 20m

$538

HelenaLambert-St Louis

HLN - STL

HLNSTL

Helena

Fri 7/19

2 stops9h 28m

Lambert-St Louis

Sun 7/21

1 stop5h 36m

$543

HelenaLambert-St Louis

HLN - STL

HLNSTL

Helena

Mon 8/19

2 stops12h 51m

Lambert-St Louis

Thu 8/22

1 stop5h 29m

$588

Flights are sorted by cheapest first

Deals found on 5/21

When is the cheapest time to fly from Helena to St. Louis?

Use this chart to determine the cheapest time to fly round-trip from Helena to St. Louis. Price data was last updated on May 19, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Helena to St. Louis flight should consider departing on Thursday afternoons when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
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Best time to book a flight from Helena to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Helena 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 St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature and rainfall totals by month.

STL

Temperature

32 - 80.6 °F

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated May 23, 2024.
Read through reviews of airlines operating flights from Helena to St. Louis, such as Delta, Alaska Airlines and United Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.1
Very good
9,175 reviews
Check prices

Comfort

7.9

Boarding

8.2

Crew

8.6

Overall

8.1

Food

7.3

Entertainment

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Alaska Airlines
8.1
Very good
9,175 reviews
Alaska Airlines
8.1
Very good
9,175 reviews
Check prices

Comfort

7.9

Boarding

8.2

Crew

8.6

Overall

8.1

Food

7.3

Entertainment

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Delta
8.0
Very good
10,561 reviews
Alaska Airlines
8.1
Very good
9,175 reviews
Check prices

Comfort

7.9

Boarding

8.2

Crew

8.6

Overall

8.1

Food

7.3

Entertainment

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

United Airlines
7.4
Good
10,852 reviews
Alaska Airlines
8.1
Very good
9,175 reviews
Check prices

Comfort

7.9

Boarding

8.2

Crew

8.6

Overall

8.1

Food

7.3

Entertainment

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Related info for your journey

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

  • Can I find flights from Helena to St. Louis for under $500 on Cheapflights?

    Yes, there are multiple flights from Helena to St. Louis for under $500. The cheapest flight booked recently is on Delta for just $448, but on average you can expect to pay $585.

  • What are the cheapest airlines flying from Helena to St. Louis round-trip?

    Delta, at $448, was found to be the cheapest airline from Helena to St. Louis.Alternate airlines to your destination round-trip include United Airlines and Alaska Airlines. Delta is priced at 31% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Helena to St. Louis one-way?

    The cheapest airlines for a one-way flight from Helena to St. Louis are Delta ($224), United Airlines ($264), and Alaska Airlines ($374).

  • What does HLN to STL mean?

    HLN and STL 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. HLN to STL refers to a flight route from Helena Airport to Lambert-St Louis Airport.

  • Can I find deals for flights from Helena to St. Louis that include extra baggage allowance?

    The amount of baggage you can bring on your Helena to St. Louis 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 Helena to St. Louis with specific airlines?

    Yes, Cheapflights allows you to browse and filter Helena to St. Louis 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 Helena to St. Louis that include hotel bookings?

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

  • How can I find direct flights from Helena to St. Louis?

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

  • Can I find deals for business class flights from Helena to St. Louis?

    Yes. Cheapflights offers flight deals from Helena to St. Louis 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 Helena to St. Louis that allow pets onboard?

    Many airlines flying from Helena to St. Louis 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 Helena to St. Louis?

    Yes, you can often find last-minute deals on Helena to St. Louis 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 Helena to St. Louis flight deals updated?

    The Helena to St. Louis flight deals you see on this page were last updated on 5/23.

  • When is the best time to book a flight from Helena to St. Louis?

    Currently, September is the cheapest month in which you can book a flight from Helena to St. Louis (average of $320). Flying from Helena to St. Louis in July is currently the most expensive (average of $366). 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.

See more FAQs

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Alternative routes for Helena to St. Louis
See prices for flight routes from nearby airports that may be better suited for you.

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Top 2 airlines flying from Helena to St. Louis

Discover the top 2 airlines that operate flights from Helena to St. Louis. 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 2,730,072 searches. Data last updated May 23, 2024.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$437Average$561FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapest$445Average$593FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
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Search flights from Helena to St. Louis by cabin class

Find flights from Helena to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy Class

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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Helena to St. Louis?

When you search for this flight from Helena to St. Louis, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Helena to St. Louis?

Cheapflights simply makes it quick and affordable to book flights from Helena to St. Louis by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Helena to St. Louis with no change fees?

Yes! Cheapflights helps users easily find flights from Helena to St. Louis with no change fees.

Can Cheapflights notify me if prices for flights from Helena to St. Louis become cheaper?

Yes, Cheapflights offers price alerts on Helena to St. Louis flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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