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Cheap flights from Washington, D.C. to New York from $82

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 9/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
7:35 pm - 8:50 pmBWI  Baltimore/Washington-ISP Islip Long Island
1h 15mnonstop
Southwest Logo
12:20 pm - 1:40 pmISP  Islip Long Island-BWI Baltimore/Washington
1h 20mnonstop
$197Southwest
Sat, Sep 5 - Sun, Sep 6
Southwest Logo
7:35 pm - 8:50 pmBWI  Baltimore/Washington-ISP Islip Long Island
1h 15mnonstop
Southwest Logo
5:30 am - 6:45 amISP  Islip Long Island-BWI Baltimore/Washington
1h 15mnonstop
$212Southwest
Sat, Sep 5 - Sat, Sep 12
Frontier Logo
4:52 pm - 6:14 pmIAD  Washington, D.C. Dulles Intl-ISP Islip Long Island
25h 22m1 stop Orlando
Frontier Logo
5:43 pm - 10:27 amISP  Islip Long Island-IAD Washington, D.C. Dulles Intl
16h 44m1 stop Orlando
$218Frontier
Sat, Sep 5 - Sat, Sep 12
Southwest Logo
3:15 pm - 4:25 pmBWI  Baltimore/Washington-ISP Islip Long Island
1h 10mnonstop
Southwest Logo
12:35 pm - 1:50 pmISP  Islip Long Island-BWI Baltimore/Washington
1h 15mnonstop
$227Southwest
Mon, Sep 7 - Thu, Sep 10
Southwest Logo
7:35 pm - 8:50 pmBWI  Baltimore/Washington-ISP Islip Long Island
1h 15mnonstop
Southwest Logo
6:10 am - 7:25 amISP  Islip Long Island-BWI Baltimore/Washington
1h 15mnonstop
$227Southwest
Sat, Sep 26 - Mon, Sep 28
Southwest Logo
10:35 am - 11:45 amBWI  Baltimore/Washington-ISP Islip Long Island
1h 10mnonstop
Southwest Logo
3:10 pm - 4:25 pmISP  Islip Long Island-BWI Baltimore/Washington
1h 15mnonstop
$227Southwest
Thu, Oct 15 - Mon, Oct 19
Southwest Logo
11:00 am - 12:10 pmBWI  Baltimore/Washington-ISP Islip Long Island
1h 10mnonstop
Southwest Logo
10:20 am - 11:35 amISP  Islip Long Island-BWI Baltimore/Washington
1h 15mnonstop
$227Southwest
Tue, Sep 1 - Thu, Sep 3
Southwest Logo
8:25 am - 9:40 amBWI  Baltimore/Washington-ISP Islip Long Island
1h 15mnonstop
Southwest Logo
11:55 am - 1:15 pmISP  Islip Long Island-BWI Baltimore/Washington
1h 20mnonstop
$227Southwest
Thu, Sep 10 - Sat, Sep 12
Frontier Logo
4:52 pm - 9:53 amIAD  Washington, D.C. Dulles Intl-ISP Islip Long Island
17h 01m1 stop Orlando
Frontier Logo
7:46 pm - 11:43 amISP  Islip Long Island-IAD Washington, D.C. Dulles Intl
15h 57m1 stop Tampa
$231Frontier
Sat, Sep 5 - Sun, Sep 6
Frontier Logo
11:12 am - 4:58 pmIAD  Washington, D.C. Dulles Intl-ISP Islip Long Island
5h 46m1 stop Orlando
Frontier Logo
5:43 pm - 10:17 amISP  Islip Long Island-IAD Washington, D.C. Dulles Intl
16h 34m1 stop Orlando
$232Frontier
Thu, Sep 10 - Tue, Sep 15

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

Our best JetBlue deals on Washington, D.C. to Islip, New York flight tickets
JetBlue
Sep 22
BWI4:00 pmBaltimore/Washington
7h 22m
1 stop
ISP11:22 pmIslip Long Island
Sep 23
ISP7:00 amIslip Long Island
7h 58m
1 stop
BWI2:58 pmBaltimore/Washington
$295
JetBlue
Sep 2
DCA3:20 pmWashington, D.C. Reagan-National
6h 24m
1 stop
ISP9:44 pmIslip Long Island
Sep 5
ISP6:00 amIslip Long Island
8h 13m
1 stop
DCA2:13 pmWashington, D.C. Reagan-National
$329
JetBlue
Sep 5
DCA3:09 pmWashington, D.C. Reagan-National
6h 35m
1 stop
ISP9:44 pmIslip Long Island
Sep 6
ISP6:00 amIslip Long Island
8h 13m
1 stop
DCA2:13 pmWashington, D.C. Reagan-National
$330

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
Sep 5
IAD4:52 pmWashington, D.C. Dulles Intl
25h 22m
1 stop
ISP6:14 pmIslip Long Island
Sep 12
ISP5:43 pmIslip Long Island
16h 44m
1 stop
IAD10:27 amWashington, D.C. Dulles Intl
$218
Frontier
Sep 5
IAD4:52 pmWashington, D.C. Dulles Intl
17h 01m
1 stop
ISP9:53 amIslip Long Island
Sep 6
ISP7:46 pmIslip Long Island
15h 57m
1 stop
IAD11:43 amWashington, D.C. Dulles Intl
$231
Frontier
Sep 10
IAD11:12 amWashington, D.C. Dulles Intl
5h 46m
1 stop
ISP4:58 pmIslip Long Island
Sep 15
ISP5:43 pmIslip Long Island
16h 34m
1 stop
IAD10:17 amWashington, D.C. Dulles Intl
$232

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 August 10, 2026.
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

Cheapest round-trip

BaltimoreIslip

BWI Baltimore/Washington - ISP Islip Long Island

BWIISP

Baltimore/Washington

Sat 9/5

7:35 pm-8:50 pm

Nonstop1h 15m

Islip Long Island

Sun 9/6

12:20 pm-1:40 pm

Nonstop1h 20m

$197

BaltimoreIslip

BWI Baltimore/Washington - ISP Islip Long Island

BWIISP

Baltimore/Washington

Sat 9/5

7:35 pm-8:50 pm

Nonstop1h 15m

Islip Long Island

Sat 9/12

5:30 am-6:45 am

Nonstop1h 15m

$212

Washington, D.C.Islip

IAD Washington, D.C. Dulles Intl - ISP Islip Long Island

IADISP

Washington, D.C. Dulles Intl

Sat 9/5

4:52 pm-6:14 pm

1 stop25h 22m

Islip Long Island

Sat 9/12

5:43 pm-10:27 am

1 stop16h 44m

$218
Quickest round-trip

BaltimoreIslip

BWI Baltimore/Washington - ISP Islip Long Island

BWIISP

Baltimore/Washington

Mon 9/7

3:15 pm-4:25 pm

Nonstop1h 10m

Islip Long Island

Thu 9/10

12:35 pm-1:50 pm

Nonstop1h 15m

$227

BaltimoreIslip

BWI Baltimore/Washington - ISP Islip Long Island

BWIISP

Baltimore/Washington

Sat 9/26

7:35 pm-8:50 pm

Nonstop1h 15m

Islip Long Island

Mon 9/28

6:10 am-7:25 am

Nonstop1h 15m

$227

BaltimoreIslip

BWI Baltimore/Washington - ISP Islip Long Island

BWIISP

Baltimore/Washington

Thu 10/15

10:35 am-11:45 am

Nonstop1h 10m

Islip Long Island

Mon 10/19

3:10 pm-4:25 pm

Nonstop1h 15m

$227

BaltimoreIslip

BWI Baltimore/Washington - ISP Islip Long Island

BWIISP

Baltimore/Washington

Tue 9/1

11:00 am-12:10 pm

Nonstop1h 10m

Islip Long Island

Thu 9/3

10:20 am-11:35 am

Nonstop1h 15m

$227

BaltimoreIslip

BWI Baltimore/Washington - ISP Islip Long Island

BWIISP

Baltimore/Washington

Thu 9/10

8:25 am-9:40 am

Nonstop1h 15m

Islip Long Island

Sat 9/12

11:55 am-1:15 pm

Nonstop1h 20m

$227

Washington, D.C.Islip

IAD Washington, D.C. Dulles Intl - ISP Islip Long Island

IADISP

Washington, D.C. Dulles Intl

Sat 9/5

4:52 pm-9:53 am

1 stop17h 01m

Islip Long Island

Sun 9/6

7:46 pm-11:43 am

1 stop15h 57m

$231

Washington, D.C.Islip

IAD Washington, D.C. Dulles Intl - ISP Islip Long Island

IADISP

Washington, D.C. Dulles Intl

Thu 9/10

11:12 am-4:58 pm

1 stop5h 46m

Islip Long Island

Tue 9/15

5:43 pm-10:17 am

1 stop16h 34m

$232

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?

Prices are currently low for flights on this route.

Typical prices usually range from $381 to $683.
The lowest price recently found on this route was $197.

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

The month of February is, on average, the cheapest month to fly to Islip, New York from Washington, D.C., with most prices found around $0. If you aren’t able to travel to Islip, New York during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $277.

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, New York flights?

There is only 1 cabin class available to choose from on Washington, D.C. to Islip, New York 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?

No. A direct flight is the cheapest option for a flight between Washington, D.C. to Islip, New York.

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

$256

Fastest flight time

1h 10m

Direct flights

Mon, Wed, Thu, Fri, Sat and Sun

Airports in Islip, New York

1 airport
The best one-way flight to Islip, New York from Washington, D.C. in the past 72 hours is $256. The best round-trip flight deal from Washington, D.C. to Islip, New York found on momondo in the last 72 hours is $299.
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 Monday, Wednesday, Thursday, Friday, Saturday and Sunday. The only airline offering direct flights is Southwest.
There is 1 airport in Islip, New York. From Washington, D.C. there are direct flights to Islip Long Island (ISP).
Search flight deals

Frequently asked questions about flying from Washington, D.C. to Islip, New York

  • 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 $279Free CancellationRating
8.0
4,218 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
Southampton
Sag Harbor
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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