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Cheap flights from Washington, D.C. to New York from $68

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to New York departing on 2/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Washington, D.C. to New York

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
8:35 am - 7:51 pm
IAD
-
ISP
11h 16m1 stop
Frontier Logo
8:45 pm - 9:58 am
ISP
-
IAD
13h 13m1 stop
$131Frontier
Mon, Jan 12 - Fri, Jan 16
Multiple Airlines Logo
11:30 am - 7:08 pm
BWI
-
ISP
7h 38m1 stop
Multiple Airlines Logo
8:00 am - 10:36 pm
ISP
-
BWI
14h 36m1 stop
$181Multiple Airlines
Sat, Jan 10 - Wed, Jan 14
Frontier Logo
8:35 am - 7:51 pm
IAD
-
ISP
11h 16m1 stop
Frontier Logo
8:45 pm - 11:07 am
ISP
-
IAD
14h 22m2 stops
$201Frontier
Mon, Jan 12 - Fri, Jan 16
Multiple Airlines Logo
4:44 pm - 7:08 pm
BWI
-
ISP
26h 24m1 stop
Multiple Airlines Logo
8:00 am - 11:47 pm
ISP
-
BWI
15h 47m1 stop
$232Multiple Airlines
Fri, Jan 9 - Tue, Jan 13
Multiple Airlines Logo
11:30 am - 7:08 pm
BWI
-
ISP
7h 38m1 stop
Multiple Airlines Logo
11:50 am - 10:36 pm
ISP
-
BWI
10h 46m2 stops
$236Multiple Airlines
Sat, Jan 10 - Wed, Jan 14
Multiple Airlines Logo
4:44 pm - 8:47 pm
BWI
-
ISP
28h 03m1 stop
Multiple Airlines Logo
7:26 pm - 3:06 pm
ISP
-
BWI
19h 40m2 stops
$238Multiple Airlines
Thu, Jan 22 - Thu, Jan 29
Multiple Airlines Logo
6:15 am - 8:47 pm
BWI
-
ISP
14h 32m1 stop
Multiple Airlines Logo
7:35 pm - 11:45 am
ISP
-
BWI
40h 10m2 stops
$246Multiple Airlines
Fri, Jan 23 - Sat, Jan 31
Southwest Logo
10:45 am - 11:55 am
BWI
-
ISP
1h 10mnonstop
Southwest Logo
3:45 pm - 5:05 pm
ISP
-
BWI
1h 20mnonstop
$281Southwest
Thu, Jan 22 - Thu, Jan 29
Southwest Logo
8:45 pm - 9:55 pm
BWI
-
ISP
1h 10mnonstop
Southwest Logo
3:45 pm - 5:05 pm
ISP
-
BWI
1h 20mnonstop
$301Southwest
Tue, Jan 27 - Fri, Jan 30
Breeze Airways Logo
2:10 pm - 11:15 am
IAD
-
ISP
21h 05m1 stop
Breeze Airways Logo
11:55 am - 2:18 pm
ISP
-
IAD
26h 23m3 stops
$804Breeze Airways
Thu, Apr 2 - Sun, Apr 5

Southwest flights from Washington, D.C. to Islip, New York

Our best Southwest deals on Washington, D.C. to Islip, New York flight tickets
Southwest
Jan 22
BWI10:45 amBaltimore/Washington
1h 10m
ISP11:55 amIslip Long Island
Jan 29
ISP3:45 pmIslip Long Island
1h 20m
BWI5:05 pmBaltimore/Washington
$281
Find similar
Southwest
Jan 27
BWI8:45 pmBaltimore/Washington
1h 10m
ISP9:55 pmIslip Long Island
Jan 30
ISP3:45 pmIslip Long Island
1h 20m
BWI5:05 pmBaltimore/Washington
$301
Find similar
Southwest
Apr 2
BWI10:45 pmBaltimore/Washington
1h 10m
ISP11:55 pmIslip Long Island
Apr 5
ISP5:40 amIslip Long Island
1h 20m
BWI7:00 amBaltimore/Washington
$339
Find similar

Frontier flights from Washington, D.C. to Islip, New York

Our best Frontier deals on Washington, D.C. to Islip, New York flight tickets
Frontier
Jan 12
IAD8:35 amWashington, D.C. Dulles Intl
11h 16m
1 stop
ISP7:51 pmIslip Long Island
Jan 16
ISP8:45 pmIslip Long Island
13h 13m
1 stop
IAD9:58 amWashington, D.C. Dulles Intl
$131
Find similar
Frontier
Jan 12
IAD8:35 amWashington, D.C. Dulles Intl
11h 16m
1 stop
ISP7:51 pmIslip Long Island
Jan 16
ISP8:45 pmIslip Long Island
14h 22m
2 stops
IAD11:07 amWashington, D.C. Dulles Intl
$201
Find similar
Frontier
Apr 2
IAD9:58 pmWashington, D.C. Dulles Intl
10h 43m
1 stop
ISP8:41 amIslip Long Island
Apr 5
ISP8:19 pmIslip Long Island
11h 59m
1 stop
IAD8:18 amWashington, D.C. Dulles Intl
$461
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to Islip, New York 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, momondo users made 832,500 searches. Data last updated December 26, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Islip, New York that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Islip

IAD - ISP

IADISP

Washington, D.C. Dulles Intl

Mon 1/12

8:35 am-7:51 pm

1 stop11h 16m

Islip Long Island

Fri 1/16

8:45 pm-9:58 am

1 stop13h 13m

$131

BaltimoreIslip

BWI - ISP

BWIISP

Baltimore/Washington

Sat 1/10

11:30 am-7:08 pm

1 stop7h 38m

Islip Long Island

Wed 1/14

8:00 am-10:36 pm

1 stop14h 36m

$181

Washington, D.C.Islip

IAD - ISP

IADISP

Washington, D.C. Dulles Intl

Mon 1/12

8:35 am-7:51 pm

1 stop11h 16m

Islip Long Island

Fri 1/16

8:45 pm-11:07 am

2 stops14h 22m

$201

BaltimoreIslip

BWI - ISP

BWIISP

Baltimore/Washington

Fri 1/9

4:44 pm-7:08 pm

1 stop26h 24m

Islip Long Island

Tue 1/13

8:00 am-11:47 pm

1 stop15h 47m

$232

BaltimoreIslip

BWI - ISP

BWIISP

Baltimore/Washington

Sat 1/10

11:30 am-7:08 pm

1 stop7h 38m

Islip Long Island

Wed 1/14

11:50 am-10:36 pm

2 stops10h 46m

$236

BaltimoreIslip

BWI - ISP

BWIISP

Baltimore/Washington

Thu 1/22

4:44 pm-8:47 pm

1 stop28h 03m

Islip Long Island

Thu 1/29

7:26 pm-3:06 pm

2 stops19h 40m

$238

BaltimoreIslip

BWI - ISP

BWIISP

Baltimore/Washington

Fri 1/23

6:15 am-8:47 pm

1 stop14h 32m

Islip Long Island

Sat 1/31

7:35 pm-11:45 am

2 stops40h 10m

$246

BaltimoreIslip

BWI - ISP

BWIISP

Baltimore/Washington

Thu 1/22

10:45 am-11:55 am

Nonstop1h 10m

Islip Long Island

Thu 1/29

3:45 pm-5:05 pm

Nonstop1h 20m

$281

BaltimoreIslip

BWI - ISP

BWIISP

Baltimore/Washington

Tue 1/27

8:45 pm-9:55 pm

Nonstop1h 10m

Islip Long Island

Fri 1/30

3:45 pm-5:05 pm

Nonstop1h 20m

$301

Washington, D.C.Islip

IAD - ISP

IADISP

Washington, D.C. Dulles Intl

Thu 4/2

2:10 pm-11:15 am

1 stop21h 05m

Islip Long Island

Sun 4/5

11:55 am-2:18 pm

3 stops26h 23m

$804

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to New York from

How to get the cheapest flight ticket from Washington, D.C. to Islip, New York

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Washington, D.C. and Islip, New York?

What is the cheapest month to fly to Islip, New York?

The month of April is, on average, the cheapest month to fly to Islip, New York from Washington, D.C., with most prices found around $285. If you aren’t able to travel to Islip, New York during the month of April, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $320.

What is the cheapest day to depart on your flight to Islip, New York?

The cheapest day to depart from Washington, D.C. to Islip, New York is on a Tuesday. Travelers who choose to depart for Islip, New York on a Tuesday will often find tickets for as low as $296. The most expensive day to fly to Islip, New York is Sunday, with ticket prices averaging around $487.

What is the cheapest time of day to depart on your flight to Islip, New York?

Flying to Islip, New York from Washington, D.C. in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $337 when looking at flights departing in the afternoon. Flights to Islip, New York are more costly in the morning, with an average ticket price of $377. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Washington, D.C. to Islip Long Island flight route?

Fly from Baltimore/Washington to Islip Long Island for the best Washington, D.C. - Islip Long Island flight prices

What cabin class options are available on Washington, D.C. to Islip Long Island flights?

There is only 1 cabin class available to choose from on Washington, D.C. to Islip Long Island flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Washington, D.C. to Islip, New York flights?

You could potentially save up to 21% on your flight if you consider stops on a Washington, D.C. to Islip, New York flight.

When to book flights from Washington, D.C. to Islip, New York

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. to Islip, New York according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. to Islip, New York (WAS to ISP) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Islip, New York

Best Price Found

$561

Fastest flight time

1h 10m

Direct flights

Wed, Fri, Sat and Sun

Airports in Islip, New York

1 airport
The best flight deal from Washington, D.C. to Islip, New York found on momondo in the last 72 hours is $561
The fastest flight from Washington, D.C. to Islip, New York takes 1h 10m
Direct flights go from Washington, D.C. to Islip, New York on Wednesday, Friday, Saturday and Sunday. There are no airlines offering direct flights.
There is 1 airport in Islip, New York. From Washington, D.C. there are direct flights to Islip Long Island (ISP).
Search flight deals

  • How far is Washington, D.C. to Islip Long Island by plane?

    The straight-line distance from Washington, D.C. to Islip Long Island is 238.7 mi. Flights usually cover this in 1h 10m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Washington, D.C. to Islip Long Island Airport?

    Prices for flights from Washington, D.C. to Islip Long Island Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Washington, D.C. to Islip Long Island Airport?

  • How old do you have to be to fly from Washington, D.C. to Islip Long Island Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. to Islip Long Island Airport.

  • What documentation or ID do you need to fly to Islip Long Island Airport?

    The travel and health documents you'll need for your trip to Islip Long Island Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Islip Long Island Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Washington, D.C. to Islip, New York?

  • What is the most popular airline from Washington, D.C. to Islip, New York?

Best airlines flying from Washington, D.C. to Islip, New York

Compare and see reviews for airlines that fly from Washington, D.C. to Islip, New York with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $231Free CancellationRating
8.0
4,258 reviews
Search Southwest flights

Traveling to a place near New York?

Book flights to New York if you plan to visit one of these locations
Montauk
Riverhead
Sag Harbor
Southampton
Amagansett

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Islip?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Washington, D.C. to Islip. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Washington, D.C. to Islip with flexible booking policies on momondo?

momondo does allow users to show only those flights to Islip from Washington, D.C. which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Washington, D.C. to Islip?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Islip from Washington, D.C..

I’m not ready to book a flight from Washington, D.C. to Islip right now. Can momondo alert me if prices change?

Price alerts on flights to Islip from Washington, D.C. are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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