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Cheap flights from Islip (ISP) to Washington, D.C. (WAS) from $123

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 6/10. 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.
ISP — WAS
Jun 8 — Jun 151
From?
To?
Sat 6/8
Sat 6/15
1 adult, Economy
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Cheap flight deals from Islip to Washington, D.C.

Discover tips and strategies to find the most affordable flight options for your journey from Islip (ISP) 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 3, 2024.

Round-trip from

$236

One-way from

$143
From Islip Long Island to Washington, D.C. (WAS)
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One-way flight from Islip Long Island to Washington, D.C. (WAS)
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How far in advance should I book a flight from Islip, New York to Washington, D.C.?

To save on the cost of your flight from Islip, New York to Washington, D.C., book at least 51 days before your planned departure. Booking around this time can save you about 132% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $263 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $423.

What is the cheapest month to fly from Islip, New York to Washington, D.C.?

October is one of the best times of the year to fly to Washington, D.C. from Islip, New York. Prices for October average $220 per person but you can even find prices for as low as $108. The most expensive prices can be found in the month of February. Opting for a October flight can save you 10% on your journey compared to booking in February

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

When flying from Islip, New York to Washington, D.C., the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Cheap Frontier flights from Islip to Washington, D.C.

Explore cheap flight options specifically provided by Frontier for the route between Islip 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 3, 2024.
Thu 9/197:19 pmISP - BWI
1 stop20h 24mFrontier
Mon 9/303:25 pmBWI - ISP
1 stop17h 01mFrontier
Deal found 6/2$234
Thu 9/1910:00 amISP - BWI
1 stop22h 52mFrontier
Mon 9/238:00 amBWI - ISP
1 stop24h 26mFrontier
Deal found 6/2$238
Tue 8/69:43 pmISP - BWI
1 stop10h 07mFrontier
Mon 8/128:21 pmBWI - ISP
1 stop12h 34mFrontier
Deal found 6/3$250
Tue 6/259:53 pmISP - BWI
1 stop9h 54mFrontier
Thu 6/279:17 amBWI - ISP
1 stop10h 01mFrontier
Deal found 6/3$258
Fri 9/135:25 pmISP - BWI
1 stop15h 27mFrontier
Sat 9/149:12 pmBWI - ISP
1 stop13h 22mFrontier
Deal found 6/2$270
Sat 8/175:25 pmISP - BWI
1 stop15h 27mFrontier
Mon 8/199:10 pmBWI - ISP
1 stop11h 45mFrontier
Deal found 6/3$290
Tue 7/29:43 pmISP - BWI
1 stop10h 04mFrontier
Tue 7/93:37 pmBWI - ISP
1 stop16h 21mFrontier
Deal found 6/2$297
Fri 7/1211:19 amISP - BWI
1 stop28h 35mFrontier
Mon 7/152:23 pmBWI - ISP
1 stop18h 16mFrontier
Deal found 6/2$300
Sun 6/3011:07 amISP - BWI
1 stop8h 23mFrontier
Mon 7/18:38 amBWI - ISP
1 stop23h 02mFrontier
Deal found 6/3$336

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

Find cheap flight options from Islip 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 3, 2024.
Tue 6/259:53 pmISP - BWI
1 stop9h 54mFrontier
Thu 6/279:17 amBWI - ISP
1 stop10h 01mFrontier
Deal found 6/3$258
Tue 7/29:43 pmISP - BWI
1 stop10h 04mFrontier
Tue 7/93:37 pmBWI - ISP
1 stop16h 21mFrontier
Deal found 6/2$297
Fri 7/1211:19 amISP - BWI
1 stop28h 35mFrontier
Mon 7/152:23 pmBWI - ISP
1 stop18h 16mFrontier
Deal found 6/2$300
Tue 7/29:43 pmISP - BWI
1 stop10h 04mFrontier
Sun 7/78:19 pmBWI - ISP
1 stop11h 39mFrontier
Deal found 6/3$336
Fri 6/211:57 pmISP - BWI
2 stops18h 38mMultiple Airlines
Sun 6/2310:45 pmBWI - ISP
2 stops18h 22mMultiple Airlines
Deal found 6/2$341
Wed 7/34:46 pmISP - BWI
1 stop22h 11mFrontier
Wed 7/108:40 amBWI - ISP
1 stop23h 59mFrontier
Deal found 6/3$368
Fri 7/191:57 pmISP - BWI
2 stops18h 43mMultiple Airlines
Sun 7/2110:40 pmBWI - ISP
2 stops18h 27mMultiple Airlines
Deal found 6/2$370
Fri 6/211:57 pmISP - BWI
2 stops18h 38mMultiple Airlines
Sun 6/2312:36 pmBWI - ISP
3 stops28h 31mMultiple Airlines
Deal found 6/2$376
Fri 7/191:57 pmISP - BWI
3 stops23h 07mMultiple Airlines
Sun 7/2110:40 pmBWI - ISP
2 stops18h 27mMultiple Airlines
Deal found 6/2$381

Islip to Washington, D.C. 2024 flight deals

Discover exclusive flight deals for travel between Islip 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 3, 2024.
Thu 9/197:19 pmISP - BWI
1 stop20h 24mFrontier
Mon 9/303:25 pmBWI - ISP
1 stop17h 01mFrontier
Deal found 6/2$234
Thu 9/1910:00 amISP - BWI
1 stop22h 52mFrontier
Mon 9/238:00 amBWI - ISP
1 stop24h 26mFrontier
Deal found 6/2$238
Tue 8/69:43 pmISP - BWI
1 stop10h 07mFrontier
Mon 8/128:21 pmBWI - ISP
1 stop12h 34mFrontier
Deal found 6/3$250
Tue 6/259:53 pmISP - BWI
1 stop9h 54mFrontier
Thu 6/279:17 amBWI - ISP
1 stop10h 01mFrontier
Deal found 6/3$258
Fri 9/135:25 pmISP - BWI
1 stop15h 27mFrontier
Sat 9/149:12 pmBWI - ISP
1 stop13h 22mFrontier
Deal found 6/2$270
Sat 8/175:25 pmISP - BWI
1 stop15h 27mFrontier
Mon 8/199:10 pmBWI - ISP
1 stop11h 45mFrontier
Deal found 6/3$290
Tue 7/29:43 pmISP - BWI
1 stop10h 04mFrontier
Tue 7/93:37 pmBWI - ISP
1 stop16h 21mFrontier
Deal found 6/2$297
Fri 7/1211:19 amISP - BWI
1 stop28h 35mFrontier
Mon 7/152:23 pmBWI - ISP
1 stop18h 16mFrontier
Deal found 6/2$300
Tue 7/29:43 pmISP - BWI
1 stop10h 04mFrontier
Sun 7/78:19 pmBWI - ISP
1 stop11h 39mFrontier
Deal found 6/3$336

Islip to Washington, D.C. flights leaving soon

Find last-minute flight options from Islip 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 3, 2024.
Thu 6/1310:23 pmISP - BWI
1 stop9h 24mFrontier
Sat 6/158:15 pmBWI - ISP
1 stop11h 25mFrontier
Deal found 6/2$678
Tue 6/114:46 pmISP - BWI
1 stop15h 01mFrontier
Wed 6/128:26 pmBWI - ISP
1 stop14h 08mFrontier
Deal found 6/3$821
Sun 6/911:07 amISP - BWI
1 stop8h 23mFrontier
Sun 6/99:43 pmBWI - ISP
1 stop12h 46mFrontier
Deal found 6/2$908

One-way flights to Washington, D.C. from Islip

Search for one-way flight options from Islip 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 3, 2024.
Mon 6/101:57 pmISP - BWI
2 stops19h 23mMultiple Airlines
Deal found 6/2$123
Mon 6/244:46 pmISP - BWI
1 stop21h 55mFrontier
Deal found 6/2$143
Fri 6/211:57 pmISP - BWI
2 stops18h 38mMultiple Airlines
Deal found 6/3$164
Mon 6/101:57 pmISP - BWI
3 stops30h 22mMultiple Airlines
Deal found 6/2$175
Sun 7/2810:22 pmISP - BWI
1 stop15h 01mFrontier
Deal found 6/3$179
Fri 6/211:57 pmISP - BWI
3 stops26h 34mMultiple Airlines
Deal found 6/3$199
Thu 6/201:05 pmISP - BWI
3 stops27h 48mMultiple Airlines
Deal found 6/3$210
Tue 9/39:55 amISP - BWI
1 stop10h 48mFrontier
Deal found 6/2$220
Fri 7/1911:19 amISP - BWI
1 stop6h 17mFrontier
Deal found 6/2$229

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

Customize your flight search to find flights from Islip 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 3, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$234 - $376

Route

Depart

Return

Price

Islip Long IslandBaltimore/Washington

ISP - BWI

ISPBWI

Islip Long Island

Thu 9/19

1 stop20h 24m

Baltimore/Washington

Mon 9/30

1 stop17h 01m

$234

Islip Long IslandBaltimore/Washington

ISP - BWI

ISPBWI

Islip Long Island

Thu 9/19

1 stop22h 52m

Baltimore/Washington

Mon 9/23

1 stop24h 26m

$238

Islip Long IslandBaltimore/Washington

ISP - BWI

ISPBWI

Islip Long Island

Tue 8/6

1 stop10h 07m

Baltimore/Washington

Mon 8/12

1 stop12h 34m

$250

Islip Long IslandBaltimore/Washington

ISP - BWI

ISPBWI

Islip Long Island

Tue 6/25

1 stop9h 54m

Baltimore/Washington

Thu 6/27

1 stop10h 01m

$258

Islip Long IslandBaltimore/Washington

ISP - BWI

ISPBWI

Islip Long Island

Fri 9/13

1 stop15h 27m

Baltimore/Washington

Sat 9/14

1 stop13h 22m

$270

Islip Long IslandBaltimore/Washington

ISP - BWI

ISPBWI

Islip Long Island

Sat 8/17

1 stop15h 27m

Baltimore/Washington

Mon 8/19

1 stop11h 45m

$290

Islip Long IslandBaltimore/Washington

ISP - BWI

ISPBWI

Islip Long Island

Fri 6/21

2 stops18h 38m

Baltimore/Washington

Sun 6/23

2 stops18h 22m

$341

Islip Long IslandBaltimore/Washington

ISP - BWI

ISPBWI

Islip Long Island

Fri 7/19

2 stops18h 43m

Baltimore/Washington

Sun 7/21

2 stops18h 27m

$370

Islip Long IslandBaltimore/Washington

ISP - BWI

ISPBWI

Islip Long Island

Fri 6/21

2 stops18h 38m

Baltimore/Washington

Sun 6/23

3 stops28h 31m

$376

Flights are sorted by cheapest first

Deals found on 6/2

What is the cheapest day to fly from Islip, New York to Washington, D.C.?

Use this chart to determine the cheapest time to fly round-trip from Islip 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 Islip, New York to Washington, D.C. flight should consider departing on Thursday mornings when fares are most often at their lowest. Monday mornings 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 Islip to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Islip 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 3, 2024.
Frontier
6.2
Okay
3,990 reviews
Check prices

Food

5.1

Crew

7.0

Comfort

5.8

Entertainment

4.9

Overall

6.2

Boarding

6.5

Reviews

1 / 10

I'd thought there would be a complimentary drink atleast.

Frontier
6.2
Okay
3,990 reviews
Frontier
6.2
Okay
3,990 reviews
Check prices

Food

5.1

Crew

7.0

Comfort

5.8

Entertainment

4.9

Overall

6.2

Boarding

6.5

Reviews

1 / 10

I'd thought there would be a complimentary drink atleast.

Related info for your journey

Find useful and relevant information for your journey from Islip 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 Islip to Washington, D.C.?

    Located just 7.2 mi from the city center, Islip Long Island is the airport most travelers will use when flying to Washington, D.C. from Islip. Booking flights from Long Island (ISP) to Washington, D.C. should be relatively easy as there are 0 daily outbound flights to Washington, D.C. from 0 different airlines.

  • Can I find flights from Islip, New York to Washington, D.C. for under $300 on Cheapflights?

    Yes, there are multiple flights from Islip, New York to Washington, D.C. for under $300. The cheapest flight booked recently is on Frontier for just $234, but on average you can expect to pay $340.

  • Are there last-minute flights available from Islip, New York to Washington, D.C. for under $700?

    There are currently 3+ open flights from Islip, New York to Washington, D.C. within the next 7 days for less than $700.

  • What is the cheapest airline to fly from Islip, New York to Washington, D.C. round-trip?

    According to our current data, Frontier ($234), offers the cheapest pricing from Islip, New York to Washington, D.C..

  • What does ISP to IAD mean?

    ISP stands for Islip Long Island Airport, while IAD stands for Washington, D.C. Dulles Intl Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry. Ready for more IATA code knowledge? These are related airports for your current travel destination: Baltimore/Washington Airport (BWI), Washington, D.C. Reagan-National Airport (DCA).

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

    The amount of baggage you can bring on your Islip 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 Islip to Washington, D.C. with specific airlines?

    Yes, Cheapflights allows you to browse and filter Islip 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 Islip to Washington, D.C. that include hotel bookings?

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

  • How can I find direct flights from Islip 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 Islip to Washington, D.C..

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

    Yes. Cheapflights offers flight deals from Islip 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 Islip to Washington, D.C. that allow pets onboard?

    Many airlines flying from Islip 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 Islip to Washington, D.C.?

    Yes, you can often find last-minute deals on Islip 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 Islip, New York to Washington, D.C. flight deals updated?

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

  • What is the cheapest month to book a flight from Islip, New York to Washington, D.C.?

    Currently, September is the cheapest month in which you can book a flight from Islip, New York to Washington, D.C. (average of $278). Flying from Islip, New York 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.

See more FAQs

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

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Search flights from Islip to Washington, D.C. by cabin class

Find flights from Islip to Washington, D.C., based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy Class

Hourly flight availability from Islip to Washington, D.C.

Find hourly flight availability from Islip 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 3, 2024.
27%of flight departuresEarly morningMidnight to 6 am
43%of flight departuresMorning6 am to noon
30%of flight departuresAfternoonNoon to 6 pm
0%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

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How does Cheapflights help users find flights from Islip to Washington, D.C.?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Washington, D.C. from Islip today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Islip to Washington, D.C.?

Millions of users choose and trust Cheapflights to book the best flight deals from Islip to Washington, D.C. for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Islip to Washington, D.C. with no change fees?

Certainly. Search results for flights to Washington, D.C. from Islip shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Islip to Washington, D.C. become cheaper?

Yes! Start tracking prices for Islip 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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