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Cheap flights from District of Columbia to New York from $122

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from District of Columbia to New York departing on 12/12. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
9:20 pm - 9:13 amIAD-ISP
11h 53m1 stop
Frontier Logo
6:15 am - 3:53 pmISP-IAD
9h 38m1 stop
$188Frontier
Find Deal
Sun, Dec 14 - Sun, Dec 21
Frontier Logo
9:20 pm - 10:20 amIAD-ISP
13h 00m1 stop
Frontier Logo
6:00 am - 9:43 amISP-IAD
27h 43m2 stops
$261Frontier
Find Deal
Sat, Dec 6 - Wed, Dec 10
Frontier Logo
9:20 pm - 10:20 amIAD-ISP
13h 00m1 stop
Frontier Logo
6:00 am - 9:43 amISP-IAD
27h 43m2 stops
$273Frontier
Find Deal
Sat, Dec 6 - Wed, Dec 10
Frontier Logo
9:20 pm - 9:13 amIAD-ISP
11h 53m1 stop
Frontier Logo
11:15 am - 8:24 pmISP-IAD
9h 09m1 stop
$282Frontier
Find Deal
Fri, Dec 12 - Sun, Dec 14
Frontier Logo
9:20 pm - 10:20 amIAD-ISP
13h 00m1 stop
Frontier Logo
12:37 pm - 8:26 amISP-IAD
19h 49m1 stop
$317Frontier
Find Deal
Sat, Dec 6 - Wed, Dec 10
Multiple Airlines Logo
9:21 am - 11:59 pmIAD-ISP
14h 38m1 stop
Multiple Airlines Logo
11:55 am - 9:13 pmISP-IAD
33h 18m2 stops
$319Multiple Airlines
Find Deal
Mon, Mar 9 - Sun, Mar 15
Multiple Airlines Logo
9:20 pm - 10:20 amIAD-ISP
13h 00m1 stop
Multiple Airlines Logo
6:00 am - 11:10 pmISP-IAD
41h 10m2 stops
$321Multiple Airlines
Find Deal
Sat, Dec 6 - Wed, Dec 10
Southwest Logo
7:30 am - 1:30 pmDCA-ISP
6h 00m1 stop
Southwest Logo
9:15 am - 3:45 pmISP-DCA
6h 30m1 stop
$378Southwest
Find Deal
Fri, Jan 16 - Sun, Jan 18
Southwest Logo
7:30 am - 4:45 pmDCA-ISP
9h 15m1 stop
Southwest Logo
6:20 am - 4:00 pmISP-DCA
9h 40m1 stop
$383Southwest
Find Deal
Mon, Feb 16 - Tue, Feb 17
JetBlue Logo
12:05 pm - 6:45 pmDCA-ISP
6h 40m1 stop
JetBlue Logo
10:46 am - 5:20 pmISP-DCA
6h 34m1 stop
$446JetBlue
Find Deal
Fri, Dec 19 - Sun, Dec 21

Frontier flights from District of Columbia to Islip, New York

Our best Frontier deals on District of Columbia to Islip, New York flight tickets
Frontier
Dec 14
IAD9:20 pmWashington, D.C. Dulles Intl
11h 53m
1 stop
ISP9:13 amIslip Long Island
Dec 21
ISP6:15 amIslip Long Island
9h 38m
1 stop
IAD3:53 pmWashington, D.C. Dulles Intl
$188
Find similar
Frontier
Dec 6
IAD9:20 pmWashington, D.C. Dulles Intl
13h 00m
1 stop
ISP10:20 amIslip Long Island
Dec 10
ISP6:00 amIslip Long Island
27h 43m
2 stops
IAD9:43 amWashington, D.C. Dulles Intl
$261
Find similar
Frontier
Dec 6
IAD9:20 pmWashington, D.C. Dulles Intl
13h 00m
1 stop
ISP10:20 amIslip Long Island
Dec 10
ISP6:00 amIslip Long Island
27h 43m
2 stops
IAD9:43 amWashington, D.C. Dulles Intl
$273
Find similar

Southwest flights from District of Columbia to Islip, New York

Our best Southwest deals on District of Columbia to Islip, New York flight tickets
Southwest
Jan 16
DCA7:30 amWashington, D.C. Reagan-National
6h 00m
1 stop
ISP1:30 pmIslip Long Island
Jan 18
ISP9:15 amIslip Long Island
6h 30m
1 stop
DCA3:45 pmWashington, D.C. Reagan-National
$378
Find similar
Southwest
Feb 16
DCA7:30 amWashington, D.C. Reagan-National
9h 15m
1 stop
ISP4:45 pmIslip Long Island
Feb 17
ISP6:20 amIslip Long Island
9h 40m
1 stop
DCA4:00 pmWashington, D.C. Reagan-National
$383
Find similar
Southwest
Jan 16
DCA7:30 amWashington, D.C. Reagan-National
6h 00m
1 stop
ISP1:30 pmIslip Long Island
Jan 19
ISP2:10 pmIslip Long Island
8h 45m
2 stops
DCA10:55 pmWashington, D.C. Reagan-National
$393
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from District of Columbia 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 November 23, 2025.
Use the filters below to find and compare flights from District of Columbia 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

Sun 12/14

9:20 pm-9:13 am

1 stop11h 53m

Islip Long Island

Sun 12/21

6:15 am-3:53 pm

1 stop9h 38m

$188

Washington, D.C.Islip

IAD - ISP

IADISP

Washington, D.C. Dulles Intl

Sat 12/6

9:20 pm-10:20 am

1 stop13h 00m

Islip Long Island

Wed 12/10

6:00 am-9:43 am

2 stops27h 43m

$261

Washington, D.C.Islip

IAD - ISP

IADISP

Washington, D.C. Dulles Intl

Sat 12/6

9:20 pm-10:20 am

1 stop13h 00m

Islip Long Island

Wed 12/10

6:00 am-9:43 am

2 stops27h 43m

$273

Washington, D.C.Islip

IAD - ISP

IADISP

Washington, D.C. Dulles Intl

Fri 12/12

9:20 pm-9:13 am

1 stop11h 53m

Islip Long Island

Sun 12/14

11:15 am-8:24 pm

1 stop9h 09m

$282

Washington, D.C.Islip

IAD - ISP

IADISP

Washington, D.C. Dulles Intl

Sat 12/6

9:20 pm-10:20 am

1 stop13h 00m

Islip Long Island

Wed 12/10

12:37 pm-8:26 am

1 stop19h 49m

$317

Washington, D.C.Islip

IAD - ISP

IADISP

Washington, D.C. Dulles Intl

Mon 3/9

9:21 am-11:59 pm

1 stop14h 38m

Islip Long Island

Sun 3/15

11:55 am-9:13 pm

2 stops33h 18m

$319

Washington, D.C.Islip

IAD - ISP

IADISP

Washington, D.C. Dulles Intl

Sat 12/6

9:20 pm-10:20 am

1 stop13h 00m

Islip Long Island

Wed 12/10

6:00 am-11:10 pm

2 stops41h 10m

$321

Washington, D.C.Islip

DCA - ISP

DCAISP

Washington, D.C. Reagan-National

Fri 1/16

7:30 am-1:30 pm

1 stop6h 00m

Islip Long Island

Sun 1/18

9:15 am-3:45 pm

1 stop6h 30m

$378

Washington, D.C.Islip

DCA - ISP

DCAISP

Washington, D.C. Reagan-National

Mon 2/16

7:30 am-4:45 pm

1 stop9h 15m

Islip Long Island

Tue 2/17

6:20 am-4:00 pm

1 stop9h 40m

$383

Washington, D.C.Islip

DCA - ISP

DCAISP

Washington, D.C. Reagan-National

Fri 12/19

12:05 pm-6:45 pm

1 stop6h 40m

Islip Long Island

Sun 12/21

10:46 am-5:20 pm

1 stop6h 34m

$446

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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See travel insights to New York from

How to get the cheapest flight ticket from District of Columbia 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 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 District of Columbia, 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 District of Columbia 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 District of Columbia 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 District of Columbia to Islip Long Island flight route?

Fly from Baltimore/Washington to Islip Long Island for the best District of Columbia - Islip Long Island flight prices

What cabin class options are available on District of Columbia to Islip Long Island flights?

There is only 1 cabin class available to choose from on District of Columbia 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.

Cheap District of Columbia to Islip, New York flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from District of Columbia to Islip, New York

Direct flights

None
There are no direct flights from District of Columbia to Islip, New York. There are no popular flight routes from District of Columbia to Islip, New York.
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  • When did momondo last update prices for flights from District of Columbia to Islip Long Island Airport?

    Prices for flights from District of Columbia to Islip Long Island Airport are updated daily.

  • How old do you have to be to fly from District of Columbia to Islip Long Island Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from District of Columbia 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.

Best airlines flying from District of Columbia to Islip, New York

Compare and see reviews for airlines that fly from District of Columbia to Islip, New York with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $231Free CancellationRating
8.0
4,252 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 District of Columbia to Islip?

It is quick and easy to find District of Columbia to Islip flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Islip that suits you.

Can I find flights from District of Columbia to Islip with flexible booking policies on momondo?

All flight searches from District of Columbia to Islip on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from District of Columbia to Islip?

Once you have performed a search for District of Columbia to Islip flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from District of Columbia to Islip right now. Can momondo alert me if prices change?

Yes. momondo can track prices for District of Columbia to Islip flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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