Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Islip, New York to Washington, D.C. from $175

1 adult
1 adult, Economy, 0 bags

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

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
1:35 pm - 10:40 pmISP  Islip Long Island-DCA Washington, D.C. Reagan-National
9h 05m2 stops West Palm Beach President Donald J. Trump Intl Orlando
Southwest Logo
7:15 am - 5:20 pmDCA  Washington, D.C. Reagan-National-ISP Islip Long Island
10h 05m1 stop Tampa
$408Southwest
Thu, Dec 17 - Sun, Dec 20
Southwest Logo
4:25 pm - 10:40 pmISP  Islip Long Island-DCA Washington, D.C. Reagan-National
6h 15m1 stop Orlando
Southwest Logo
7:15 am - 5:20 pmDCA  Washington, D.C. Reagan-National-ISP Islip Long Island
10h 05m1 stop Tampa
$437Southwest
Thu, Dec 17 - Sun, Dec 20
Southwest Logo
7:00 am - 6:00 pmISP  Islip Long Island-DCA Washington, D.C. Reagan-National
11h 00m1 stop Orlando
Southwest Logo
12:20 pm - 6:30 pmDCA  Washington, D.C. Reagan-National-ISP Islip Long Island
6h 10m1 stop Tampa
$452Southwest
Tue, Mar 2 - Fri, Mar 5
Southwest Logo
7:00 am - 6:00 pmISP  Islip Long Island-DCA Washington, D.C. Reagan-National
11h 00m1 stop Orlando
Southwest Logo
1:55 pm - 8:35 pmDCA  Washington, D.C. Reagan-National-ISP Islip Long Island
6h 40m1 stop Orlando
$482Southwest
Fri, Jan 8 - Mon, Jan 11
Southwest Logo
7:00 am - 6:00 pmISP  Islip Long Island-DCA Washington, D.C. Reagan-National
11h 00m1 stop Orlando
Southwest Logo
12:20 pm - 6:30 pmDCA  Washington, D.C. Reagan-National-ISP Islip Long Island
6h 10m1 stop Tampa
$483Southwest
Thu, Jan 28 - Sun, Jan 31
Southwest Logo
4:25 pm - 10:40 pmISP  Islip Long Island-DCA Washington, D.C. Reagan-National
6h 15m1 stop Orlando
Southwest Logo
6:10 am - 3:35 pmDCA  Washington, D.C. Reagan-National-ISP Islip Long Island
9h 25m2 stops Orlando West Palm Beach President Donald J. Trump Intl
$522Southwest
Mon, Nov 9 - Fri, Nov 13
Southwest Logo
1:35 pm - 10:40 pmISP  Islip Long Island-DCA Washington, D.C. Reagan-National
9h 05m2 stops West Palm Beach President Donald J. Trump Intl Orlando
Southwest Logo
6:10 am - 3:35 pmDCA  Washington, D.C. Reagan-National-ISP Islip Long Island
9h 25m2 stops Orlando West Palm Beach President Donald J. Trump Intl
$527Southwest
Mon, Nov 9 - Fri, Nov 13
Southwest Logo
7:00 am - 6:00 pmISP  Islip Long Island-DCA Washington, D.C. Reagan-National
11h 00m1 stop Orlando
Southwest Logo
6:00 am - 12:30 pmDCA  Washington, D.C. Reagan-National-ISP Islip Long Island
6h 30m1 stop Orlando
$543Southwest
Thu, Jan 28 - Sat, Jan 30
Southwest Logo
6:00 am - 2:50 pmISP  Islip Long Island-DCA Washington, D.C. Reagan-National
8h 50m1 stop Orlando
Southwest Logo
4:55 pm - 10:50 pmDCA  Washington, D.C. Reagan-National-ISP Islip Long Island
5h 55m1 stop Orlando
$548Southwest
Thu, Dec 17 - Thu, Dec 17
Southwest Logo
4:25 pm - 10:40 pmISP  Islip Long Island-DCA Washington, D.C. Reagan-National
6h 15m1 stop Orlando
Southwest Logo
6:10 am - 12:40 pmDCA  Washington, D.C. Reagan-National-ISP Islip Long Island
6h 30m1 stop Orlando
$557Southwest
Mon, Nov 9 - Fri, Nov 13

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Southwest flights from Islip, New York to Washington, D.C. Reagan-National Airport

Our best Southwest deals on Islip, New York to Washington, D.C. Reagan-National Airport flight tickets
Southwest
Dec 17
ISP1:35 pmIslip Long Island
9h 05m
2 stops
DCA10:40 pmWashington, D.C. Reagan-National
Dec 20
DCA7:15 amWashington, D.C. Reagan-National
10h 05m
1 stop
ISP5:20 pmIslip Long Island
$408
Southwest
Dec 17
ISP4:25 pmIslip Long Island
6h 15m
1 stop
DCA10:40 pmWashington, D.C. Reagan-National
Dec 20
DCA7:15 amWashington, D.C. Reagan-National
10h 05m
1 stop
ISP5:20 pmIslip Long Island
$437
Southwest
Mar 2
ISP7:00 amIslip Long Island
11h 00m
1 stop
DCA6:00 pmWashington, D.C. Reagan-National
Mar 5
DCA12:20 pmWashington, D.C. Reagan-National
6h 10m
1 stop
ISP6:30 pmIslip Long Island
$452

JetBlue flights from Islip, New York to Washington, D.C. Reagan-National Airport

Our best JetBlue deals on Islip, New York to Washington, D.C. Reagan-National Airport flight tickets
JetBlue
Jan 28
ISP6:00 amIslip Long Island
15h 16m
1 stop
DCA9:16 pmWashington, D.C. Reagan-National
Jan 30
DCA7:55 amWashington, D.C. Reagan-National
14h 01m
1 stop
ISP9:56 pmIslip Long Island
$567
JetBlue
Jan 8
ISP1:36 pmIslip Long Island
20h 22m
1 stop
DCA9:58 amWashington, D.C. Reagan-National
Jan 11
DCA12:00 pmWashington, D.C. Reagan-National
24h 46m
2 stops
ISP12:46 pmIslip Long Island
$626
JetBlue
Nov 20
ISP9:40 amIslip Long Island
11h 26m
1 stop
DCA9:06 pmWashington, D.C. Reagan-National
Nov 27
DCA12:05 pmWashington, D.C. Reagan-National
20h 45m
1 stop
ISP8:50 amIslip Long Island
$637

momondo Fare Finder

 
Use the filters below to find and compare flights from Islip, New York to Washington, D.C. Reagan-National Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IslipWashington, D.C.

ISP Islip Long Island - DCA Washington, D.C. Reagan-National

ISPDCA

Islip Long Island

Thu 12/17

1:35 pm-10:40 pm

2 stops9h 05m

Washington, D.C. Reagan-National

Sun 12/20

7:15 am-5:20 pm

1 stop10h 05m

$408

IslipWashington, D.C.

ISP Islip Long Island - DCA Washington, D.C. Reagan-National

ISPDCA

Islip Long Island

Thu 12/17

4:25 pm-10:40 pm

1 stop6h 15m

Washington, D.C. Reagan-National

Sun 12/20

7:15 am-5:20 pm

1 stop10h 05m

$437

IslipWashington, D.C.

ISP Islip Long Island - DCA Washington, D.C. Reagan-National

ISPDCA

Islip Long Island

Tue 3/2

7:00 am-6:00 pm

1 stop11h 00m

Washington, D.C. Reagan-National

Fri 3/5

12:20 pm-6:30 pm

1 stop6h 10m

$452

IslipWashington, D.C.

ISP Islip Long Island - DCA Washington, D.C. Reagan-National

ISPDCA

Islip Long Island

Fri 1/8

7:00 am-6:00 pm

1 stop11h 00m

Washington, D.C. Reagan-National

Mon 1/11

1:55 pm-8:35 pm

1 stop6h 40m

$482

IslipWashington, D.C.

ISP Islip Long Island - DCA Washington, D.C. Reagan-National

ISPDCA

Islip Long Island

Thu 1/28

7:00 am-6:00 pm

1 stop11h 00m

Washington, D.C. Reagan-National

Sun 1/31

12:20 pm-6:30 pm

1 stop6h 10m

$483

IslipWashington, D.C.

ISP Islip Long Island - DCA Washington, D.C. Reagan-National

ISPDCA

Islip Long Island

Mon 11/9

4:25 pm-10:40 pm

1 stop6h 15m

Washington, D.C. Reagan-National

Fri 11/13

6:10 am-3:35 pm

2 stops9h 25m

$522

IslipWashington, D.C.

ISP Islip Long Island - DCA Washington, D.C. Reagan-National

ISPDCA

Islip Long Island

Mon 11/9

1:35 pm-10:40 pm

2 stops9h 05m

Washington, D.C. Reagan-National

Fri 11/13

6:10 am-3:35 pm

2 stops9h 25m

$527

IslipWashington, D.C.

ISP Islip Long Island - DCA Washington, D.C. Reagan-National

ISPDCA

Islip Long Island

Thu 1/28

7:00 am-6:00 pm

1 stop11h 00m

Washington, D.C. Reagan-National

Sat 1/30

6:00 am-12:30 pm

1 stop6h 30m

$543

IslipWashington, D.C.

ISP Islip Long Island - DCA Washington, D.C. Reagan-National

ISPDCA

Islip Long Island

Thu 12/17

6:00 am-2:50 pm

1 stop8h 50m

Washington, D.C. Reagan-National

Thu 12/17

4:55 pm-10:50 pm

1 stop5h 55m

$548
Quickest round-trip

IslipWashington, D.C.

ISP Islip Long Island - DCA Washington, D.C. Reagan-National

ISPDCA

Islip Long Island

Mon 11/9

4:25 pm-10:40 pm

1 stop6h 15m

Washington, D.C. Reagan-National

Fri 11/13

6:10 am-12:40 pm

1 stop6h 30m

$557

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Washington, D.C. from

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

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 day to depart on your flight to Washington, D.C. Reagan-National Airport?

The cheapest day to depart from Islip, New York to Washington, D.C. Reagan-National Airport is on a Friday. Travelers who choose to depart for Washington, D.C. Reagan-National Airport on a Friday will often find tickets for as low as $319. Flights from Islip, New York to Washington, D.C. Reagan-National Airport on a Monday will generally be more expensive and average around $394. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Washington, D.C. Reagan-National Airport?

Our data shows that the cheapest Islip, New York to Washington, D.C. Reagan-National Airport flights are usually those with departure times at noon. Our users have found flights to Washington, D.C. Reagan-National Airport at noon for as low as $346. In contrast, the most expensive time of day to depart to Washington, D.C. Reagan-National Airport is in the afternoon when prices are around $371.

When to book flights from Islip, New York to Washington, D.C. Reagan-National Airport

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

Cheap Islip, New York to Washington, D.C. Reagan-National Airport (ISP to DCA) flight deals and tips

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

Best Price Found

$175

Fastest flight time

5h 45m

Direct flights

None
The best one-way flight to Washington, D.C. Reagan-National Airport from Islip, New York in the past 72 hours is $175. The best round-trip flight deal from Islip, New York to Washington, D.C. Reagan-National Airport found on momondo in the last 72 hours is $408.
The fastest flight from Islip, New York to Washington, D.C. Reagan-National Airport takes 5h 45m
There are no direct flights from Islip, New York to Washington, D.C. Reagan-National Airport. There are no popular flight routes from Islip, New York to Washington, D.C. Reagan-National Airport.
Search flight deals

Frequently asked questions about flying from Islip, New York to Washington, D.C. Reagan-National Airport

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

    The distance between Islip Long Island and Washington, D.C. Reagan-National is about 240.8 mi. In terms of flight time, this usually takes a little over 5h 45m.

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

    Prices for flights from Islip Long Island Airport to Washington, D.C. Reagan-National Airport refresh daily.

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Islip Long Island Airport to Washington, D.C. Reagan-National Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Reagan-National Airport?

    The travel and health documents required for your trip to Washington, D.C. Reagan-National Airport 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 Washington, D.C. Reagan-National Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
National Harbor
Arlington
Gettysburg
Fredericksburg
Laurel
Waldorf
Woodbridge
Gaithersburg
Linthicum Heights
Rockville
Silver Spring
Towson
Fairfax
Springfield
Glen Burnie
Edgewood
College Park
Camp Springs
Colonial Beach

Why use momondo?

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

Finding the right flight to Washington, D.C. from Islip is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Washington, D.C. quick and easy, saving you time and money.

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

Yes. All flights to Washington, D.C. from Islip on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo provides multiple filters to help you find the best flight to Washington, D.C. 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 Washington, D.C. right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Islip to Washington, D.C. now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Washington, D.C. and let you know when they change.

An easier way to manage your Washington, D.C. Reagan-National Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 11/28
Sat 12/5
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Washington, D.C.