What airlines fly to District of Columbia?

United Airlines, Delta and American Airlines are the top three most popular airlines that fly to District of Columbia from Islip, New York according to our data. United Airlines is the first choice among our users, with 41% of people opting to fly with this airline when traveling to District of Columbia. Keep in mind that there are 5 different airlines that fly to District of Columbia on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Islip Long Island to District of Columbia?

Southwest and JetBlue are the most popular carriers operating from Islip Long Island to District of Columbia

When did momondo last update prices for flights from Islip Long Island Airport to District of Columbia?

Prices for flights from Islip Long Island Airport to District of Columbia were last updated today.

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

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 Islip Long Island Airport to District of Columbia.

What documentation or ID do you need to fly to District of Columbia?

The travel and health documents required for your trip to District of Columbia can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at District of Columbia. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$174 Cheap Flights from Islip to District of Columbia in 2026

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Find the cheapest flights from Islip, New York to District of Columbia

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:10 pm - 10:50 pm

ISP

DCA

5h 40m

1 stop

4:25 pm - 10:30 pm

DCA

ISP

6h 05m

1 stop

$357Southwest

Fri, May 15 - Mon, May 18

2:30 pm - 10:25 pm

ISP

DCA

7h 55m

2 stops

6:00 am - 12:05 pm

DCA

ISP

6h 05m

1 stop

$387Southwest

Wed, May 20 - Thu, May 21

5:10 pm - 10:50 pm

ISP

DCA

5h 40m

1 stop

6:00 am - 12:05 pm

DCA

ISP

6h 05m

1 stop

$402Southwest

Thu, Apr 23 - Mon, Apr 27

5:10 pm - 10:50 pm

ISP

DCA

5h 40m

1 stop

1:00 pm - 9:05 pm

DCA

ISP

8h 05m

1 stop

$408Southwest

Fri, May 22 - Sun, May 24

6:55 am - 3:45 pm

ISP

DCA

8h 50m

1 stop

6:00 am - 12:05 pm

DCA

ISP

6h 05m

1 stop

$417Southwest

Wed, May 20 - Thu, May 21

5:10 pm - 10:50 pm

ISP

DCA

5h 40m

1 stop

1:00 pm - 11:45 pm

DCA

ISP

10h 45m

1 stop

$422Southwest

Thu, Apr 30 - Sun, May 3

5:10 pm - 10:50 pm

ISP

DCA

5h 40m

1 stop

1:05 pm - 10:40 pm

DCA

ISP

9h 35m

1 stop

$423Southwest

Fri, May 8 - Sat, May 9

5:10 pm - 10:50 pm

ISP

DCA

5h 40m

1 stop

6:00 am - 12:05 pm

DCA

ISP

6h 05m

1 stop

$427Southwest

Mon, Apr 27 - Mon, May 4

6:55 am - 3:45 pm

ISP

DCA

8h 50m

1 stop

6:00 am - 12:05 pm

DCA

ISP

6h 05m

1 stop

$433Southwest

Wed, May 20 - Thu, May 21

9:04 pm - 9:02 am

ISP

DCA

11h 58m

1 stop

6:10 pm - 4:29 pm

DCA

ISP

22h 19m

1 stop

$437JetBlue

Thu, Apr 23 - Mon, Apr 27

Southwest flights from Islip, New York to District of Columbia

Our best Southwest deals on Islip, New York to District of Columbia flight tickets

Southwest

May 15

ISP5:10 pmIslip Long Island

5h 40m

1 stop

DCA10:50 pmWashington, D.C. Reagan-National

May 18

DCA4:25 pmWashington, D.C. Reagan-National

6h 05m

1 stop

ISP10:30 pmIslip Long Island

$357

Southwest

May 20

ISP2:30 pmIslip Long Island

7h 55m

2 stops

DCA10:25 pmWashington, D.C. Reagan-National

May 21

DCA6:00 amWashington, D.C. Reagan-National

6h 05m

1 stop

ISP12:05 pmIslip Long Island

$387

Southwest

Apr 23

ISP5:10 pmIslip Long Island

5h 40m

1 stop

DCA10:50 pmWashington, D.C. Reagan-National

Apr 27

DCA6:00 amWashington, D.C. Reagan-National

6h 05m

1 stop

ISP12:05 pmIslip Long Island

$402

JetBlue flights from Islip, New York to District of Columbia

Our best JetBlue deals on Islip, New York to District of Columbia flight tickets

JetBlue

Apr 23

ISP9:04 pmIslip Long Island

11h 58m

1 stop

DCA9:02 amWashington, D.C. Reagan-National

Apr 27

DCA6:10 pmWashington, D.C. Reagan-National

22h 19m

1 stop

ISP4:29 pmIslip Long Island

$437

JetBlue

May 4

ISP8:59 pmIslip Long Island

12h 03m

1 stop

DCA9:02 amWashington, D.C. Reagan-National

May 6

DCA11:00 amWashington, D.C. Reagan-National

9h 04m

1 stop

ISP8:04 pmIslip Long Island

$440

JetBlue

Aug 28

ISP11:25 amIslip Long Island

8h 34m

1 stop

DCA7:59 pmWashington, D.C. Reagan-National

Aug 30

DCA3:35 pmWashington, D.C. Reagan-National

7h 52m

1 stop

ISP11:27 pmIslip Long Island

$468

momondo Fare Finder

Use the filters below to find and compare flights from Islip, New York to District of Columbia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

IslipWashington, D.C.

ISP - DCA

ISPDCA

Islip Long Island

Fri 5/15

5:10 pm-10:50 pm

1 stop5h 40m

Washington, D.C. Reagan-National

Mon 5/18

4:25 pm-10:30 pm

1 stop6h 05m

$357

IslipWashington, D.C.

ISP - DCA

ISPDCA

Islip Long Island

Wed 5/20

2:30 pm-10:25 pm

2 stops7h 55m

Washington, D.C. Reagan-National

Thu 5/21

6:00 am-12:05 pm

1 stop6h 05m

$387

IslipWashington, D.C.

ISP - DCA

ISPDCA

Islip Long Island

Thu 4/23

5:10 pm-10:50 pm

1 stop5h 40m

Washington, D.C. Reagan-National

Mon 4/27

6:00 am-12:05 pm

1 stop6h 05m

$402

IslipWashington, D.C.

ISP - DCA

ISPDCA

Islip Long Island

Fri 5/22

5:10 pm-10:50 pm

1 stop5h 40m

Washington, D.C. Reagan-National

Sun 5/24

1:00 pm-9:05 pm

1 stop8h 05m

$408

IslipWashington, D.C.

ISP - DCA

ISPDCA

Islip Long Island

Wed 5/20

6:55 am-3:45 pm

1 stop8h 50m

Washington, D.C. Reagan-National

Thu 5/21

6:00 am-12:05 pm

1 stop6h 05m

$417

IslipWashington, D.C.

ISP - DCA

ISPDCA

Islip Long Island

Thu 4/30

5:10 pm-10:50 pm

1 stop5h 40m

Washington, D.C. Reagan-National

Sun 5/3

1:00 pm-11:45 pm

1 stop10h 45m

$422

IslipWashington, D.C.

ISP - DCA

ISPDCA

Islip Long Island

Fri 5/8

5:10 pm-10:50 pm

1 stop5h 40m

Washington, D.C. Reagan-National

Sat 5/9

1:05 pm-10:40 pm

1 stop9h 35m

$423

IslipWashington, D.C.

ISP - DCA

ISPDCA

Islip Long Island

Mon 4/27

5:10 pm-10:50 pm

1 stop5h 40m

Washington, D.C. Reagan-National

Mon 5/4

6:00 am-12:05 pm

1 stop6h 05m

$427

IslipWashington, D.C.

ISP - DCA

ISPDCA

Islip Long Island

Wed 5/20

6:55 am-3:45 pm

1 stop8h 50m

Washington, D.C. Reagan-National

Thu 5/21

6:00 am-12:05 pm

1 stop6h 05m

$433

IslipWashington, D.C.

ISP - DCA

ISPDCA

Islip Long Island

Thu 4/23

9:04 pm-9:02 am

1 stop11h 58m

Washington, D.C. Reagan-National

Mon 4/27

6:10 pm-4:29 pm

1 stop22h 19m

$437

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Islip, New York to District of Columbia

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

Prices

Airlines

What is the cheapest Islip Long Island to District of Columbia flight route?

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

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

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

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

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

Fastest flight time	5h 35m
Direct flights	None

The fastest flight from Islip, New York to District of Columbia takes 5h 35m

There are no direct flights from Islip, New York to District of Columbia. There are no popular flight routes from Islip, New York to District of Columbia.

Search flight deals

When did momondo last update prices for flights from Islip Long Island Airport to District of Columbia?
Prices for flights from Islip Long Island Airport to District of Columbia were last updated today.
How old do you have to be to fly from Islip Long Island Airport to District of Columbia?
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 Islip Long Island Airport to District of Columbia.
What documentation or ID do you need to fly to District of Columbia?
The travel and health documents required for your trip to District of Columbia can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at District of Columbia. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

Compare and see reviews for airlines that fly from Islip, New York to District of Columbia with momondo

Airline	Rating	Free Cancellation	Price
Southwest	PriceFrom $237	Free Cancellation	Rating 8.0 4,335 reviews		Search Southwest flights

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Why should I use momondo to find a flight deal from Islip to District of Columbia?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Islip to District of Columbia for you.

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

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

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

momondo provides multiple filters to help you find the best flight to District of Columbia from Islip. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Price alerts on flights to District of Columbia from Islip 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.