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Washington, D.C.

$61+ Cheap flights from Islip, NY (ISP) to Washington, D.C. (WAS)

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 1/30. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — WAS
Jan 21 — Jan 281
Tue 1/21
Tue 1/28
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 January 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$120
(CheapOair)

One-way from

$61
(Frontier)
Provider with most accurate pricing for Islip Long Island-Washington, D.C. (WAS) flight deals.
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Provider most trusted by Cheapflights users for Islip Long Island-Washington, D.C. (WAS) flights.
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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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Find flight deals from Islip to Washington, D.C.

Cheapest flights from Islip to Washington, D.C.
Explore the most affordable flight options available from Islip to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 16, 2025.

This CheapOair deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/226:32 pmISP - BWI
1 stop14h 01mFrontier
Wed 2/265:00 pmBWI - ISP
1 stop25h 54mFrontier
Deal found 1/16$120
This JetBlue deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/186:00 amISP - DCA
1 stop5h 42mJetBlue
Wed 6/253:00 pmDCA - ISP
1 stop6h 15mJetBlue
Deal found 1/16$256
This Mytrip deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/315:20 pmISP - BWI
2 stops23h 00mMultiple Airlines
Tue 2/44:09 pmBWI - ISP
3 stops21h 46mMultiple Airlines
Deal found 1/16$276
This Southwest deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/610:20 amISP - BWI
Nonstop1h 15mSouthwest
Sun 3/910:45 pmBWI - ISP
Nonstop1h 10mSouthwest
Deal found 1/16$319
This Trip.com deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/289:07 amISP - DCA
2 stops26h 56mFrontier
Sun 3/27:00 amDCA - ISP
2 stops25h 07mFrontier
Deal found 1/16$386
This Southwest deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/207:50 amISP - DCA
1 stop8h 55mSouthwest
Thu 3/271:20 pmDCA - ISP
2 stops9h 10mSouthwest
Deal found 1/16$402

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 2,558,603 searches. Data last updated January 16, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Tue 2/25

9:33 pm-7:21 am

1 stop9h 48m

Baltimore/Washington

Wed 2/26

8:21 am-8:07 am

1 stop23h 46m

$132

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Tue 2/25

3:50 pm-5:20 pm

Nonstop1h 30m

Baltimore/Washington

Wed 2/26

2:05 pm-3:15 pm

Nonstop1h 10m

$319

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Wed 2/5

2:35 pm-4:33 pm

3 stops25h 58m

Baltimore/Washington

Fri 2/7

8:00 am-1:55 pm

3 stops29h 55m

$345

IslipWashington, D.C.

ISP - DCA

ISPDCA

Islip Long Island

Tue 2/25

9:05 am-4:20 pm

1 stop7h 15m

Washington, D.C. Reagan-National

Wed 2/26

1:00 pm-6:55 pm

1 stop5h 55m

$447

IslipWashington, D.C.

ISP - DCA

ISPDCA

Islip Long Island

Fri 3/14

9:04 pm-12:03 pm

2 stops38h 59m

Washington, D.C. Reagan-National

Fri 3/21

6:00 pm-8:04 pm

2 stops26h 04m

$978

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Mon 4/14

9:04 pm-9:35 am

1 stop12h 31m

$61

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Sun 2/16

12:50 pm-2:15 pm

Nonstop1h 25m

$160

IslipWashington, D.C.

ISP - DCA

ISPDCA

Islip Long Island

Wed 2/5

12:40 pm-10:59 pm

1 stop10h 19m

$182

IslipBaltimore

ISP - BWI

ISPBWI

Islip Long Island

Fri 1/24

1:57 pm-7:10 pm

3 stops29h 13m

$260

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/15

Compare providers for flights from Islip to Washington, D.C.

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Islip to Washington, D.C. in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Islip, New York-Washington, D.C. flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Islip, New York-Washington, D.C. flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Islip, New York-Washington, D.C. flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Islip, New York-Washington, D.C. flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Islip, New York-Washington, D.C. flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

Travel insights for flights from Islip to Washington, D.C.

Get recent, data-driven insights about flights from Islip to Washington, D.C. including ideal travel times, pricing trends, and more.

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

Currently, August is the cheapest month in which you can book a flight from Islip, New York to Washington, D.C. (average of $241). Flying from Islip, New York to Washington, D.C. in March is currently the most expensive (average of $290). 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.

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

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 January 16, 2025.

When flying from Islip, New York to Washington, D.C., the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 26% versus a flight in the morning.

Rainfall in Washington, D.C. by month

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

In terms of precipitation, rainfall in Washington, D.C. ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. when rainfall is around 2.6 in.

Temperature in Washington, D.C. by month

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

If weather is an important factor for your trip to Washington, D.C., use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 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 January 16, 2025.
Get a feel of what it's like to fly with Frontier and Southwest from Islip to Washington, D.C. by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,659 reviews

Food

7.2

Crew

8.7

Comfort

8.1

Entertainment

7.7

Boarding

8.2

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,659 reviews
Southwest
8.1
Very good
4,659 reviews

Food

7.2

Crew

8.7

Comfort

8.1

Entertainment

7.7

Boarding

8.2

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

JetBlue
7.4
Good
3,199 reviews
Southwest
8.1
Very good
4,659 reviews

Food

7.2

Crew

8.7

Comfort

8.1

Entertainment

7.7

Boarding

8.2

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Frontier
6.1
Okay
3,435 reviews
Southwest
8.1
Very good
4,659 reviews

Food

7.2

Crew

8.7

Comfort

8.1

Entertainment

7.7

Boarding

8.2

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

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 1 airline.

  • How popular is this Islip, New York to Washington, D.C. flight route?

    This flight path from Islip Long Island to Washington, D.C. was viewed by 3 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest airlines flying from Islip, New York to Washington, D.C. round-trip?

    According to our current data, Frontier ($120), JetBlue ($256), and Southwest ($319) offers the cheapest pricing from Islip, New York to Washington, D.C..

  • What are the cheapest airlines to fly from Islip, New York to Washington, D.C. one-way?

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $61. Southwest flights start at $160 while deals on JetBlue start at $271 one-way.

  • What are the cheapest flights from Islip, New York to Washington, D.C.?

    On average you can expect to pay $383 for a flight from Islip, New York to Washington, D.C.. The cheapest flight overall is $163 while the most popular route, (Islip Long Island - Baltimore/Washington) is currently priced at $266.

  • 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.

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

    Currently, August is the cheapest month in which you can book a flight from Islip, New York to Washington, D.C. (average of $241). Flying from Islip, New York to Washington, D.C. in March is currently the most expensive (average of $290). 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

Traveling to a place near Islip?

Book flights to Islip if you plan to visit one of these locations
Fairfax
Arlington
Alexandria
Springfield
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Rockville
Tysons
Gaithersburg
Fredericksburg
Linthicum Heights
Laurel
Falls Church
Greenbelt
Easton
Oxon Hill
Herndon
Woodbridge
Bowie
Reston
National Harbor

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Alternative routes for Islip to Washington, D.C.

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Top airline flying from Islip to Washington, D.C.

Discover the top airline that operate flights from Islip 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 2,558,603 searches. Data last updated January 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$305Average$374FlexibilityNo cancel feeOn-time63%
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