Which airports can I use when flying from Islip to Washington, D.C.?

Flights from Islip to Washington, D.C. usually depart from Islip Long Island (ISP) and may arrive at several airports in Washington, D.C. area, including Washington, D.C. Reagan-National (DCA) and Washington, D.C. Dulles Intl (IAD).

What cabin classes can I book on flights from Islip to Washington, D.C.?

Only Economy Class is available on flights from Islip to Washington, D.C..

Which airports do connecting flights from Islip to Washington, D.C. pass through?

Connecting flights from Islip to Washington, D.C. most commonly pass through: • Boston Logan Intl (BOS) - 50% of one-stop connections • Orlando (MCO) - 50% of one-stop connections Together, these airports account for 100% of one-stop bookings on this route.

Can I save money by using flexible dates for flights from Islip to Washington, D.C.?

Yes. Being flexible with your travel dates can save you up to 46% on the Islip to Washington, D.C. route. Monday is the cheapest departure day at $606 round-trip on average, while Friday is the most expensive at $1,108, a difference of $502. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

What popular places can I visit in Washington, D.C.?

Some of the most popular sights in Washington, D.C. are Walter E. Washington Convention Center, National Mall and Capital One Arena. These are among the most viewed places in Washington, D.C. on KAYAK.

How long is a flight from Islip to Washington, D.C.?

There are currently no nonstop flights available from Islip to Washington, D.C.. Flights with 1 layover take between 4h 12m and 13h 41m in total, depending on the connection.

Do I need a passport to fly from Islip to Washington, D.C.?

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

Have flight prices from Islip to Washington, D.C. changed much recently?

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $163 to $1,541. That means the highest observed fare was about 9x higher than the lowest one.

How are flight prices from Islip to Washington, D.C. looking right now?

One-way fares from Islip to Washington, D.C. are currently higher than usual. Average one-way flight prices are about $109, which is 55% above the typical average for this route.

How much time can I save by choosing a different layover airport from Islip to Washington, D.C.?

Flying via Boston Logan Intl (BOS) gives the shortest average 1-stop total travel time at 4h 12m, compared with 13h 41m via Orlando (MCO).

What car rental options are available in Washington, D.C.?

Since Washington, D.C. is served by multiple airports, car rental options and rates can vary depending on which one you fly into. Near Washington, D.C. Reagan-National Airport (DCA) — daily rates from around $23: • Sixt • Dollar • Thrifty • Alamo • Budget Near Washington, D.C. Dulles Intl Airport (IAD) — daily rates from around $24: • Dollar • Budget • Hertz • Sixt • Thrifty

What is the cheapest airline to fly from Islip to Washington, D.C.?

Southwest ($163) and Frontier ($254) are the cheapest airlines to fly round-trip from Islip to Washington, D.C. according to KAYAK data over the last 5 days.

What is the most popular layover airport when flying from Islip to Washington, D.C.?

Boston Logan Intl (BOS) and Orlando (MCO) are the most popular layovers for the Islip to Washington, D.C. route. 50% of KAYAK users who booked 1-stop round-trips over the past 3 months connected via BOS or MCO.

What is the cheapest layover airport when flying from Islip to Washington, D.C.?

Flights via Orlando (MCO) offer the most affordable fares, with an average round-trip price of $320. Based on KAYAK data over the past 3 months.

When flying from Islip to Washington, D.C. which airport offers the shortest layover?

Boston Logan Intl (BOS) had the shortest average connection time for Islip to Washington, D.C. layovers at 162 minutes over the past 3 months.

$82 CHEAP FLIGHTS from Islip to Washington, D.C. (ISP - WAS)

Save 21% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Cheapest round-trip

$163

Typical prices: $320-$1,108

Southwest

Wed 10/3Fri 10/5

ISP - BWI • Non-stop

Cheapest one-way

$82

Typical prices: $70-$515

Southwest

Fri 11/9

ISP - BWI • Non-stop

Top routes

ISP - IAD

Cheapest • 29% average savings

ISP - DCA

Most popular

Insights

Top layover airports

Orlando (MCO)

Cheapest • Avg $320 (round-trip)

Boston Logan Intl (BOS)

Shortest trip • 4h 12m (one-way)

Insights

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We hope you love your trip to Washington, D.C.!

Flight Deals

Cheap Flights from Islip to Washington, D.C. (ISP-WAS)

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Islip to Washington, D.C.

Sat, Oct 3 - Mon, Oct 5

12:20 pm - 1:35 pmISP Islip Long Island-BWI Baltimore/Washington

1h 15mnonstop

1:20 pm - 2:30 pmBWI Baltimore/Washington-ISP Islip Long Island

1h 10mnonstop

$163Southwest

Thu, Oct 1 - Mon, Oct 5

3:10 pm - 4:25 pmISP Islip Long Island-BWI Baltimore/Washington

1h 15mnonstop

3:50 pm - 5:00 pmBWI Baltimore/Washington-ISP Islip Long Island

1h 10mnonstop

$163Southwest

Fri, Oct 2 - Mon, Oct 5

5:40 pm - 6:55 pmISP Islip Long Island-BWI Baltimore/Washington

1h 15mnonstop

1:20 pm - 2:30 pmBWI Baltimore/Washington-ISP Islip Long Island

1h 10mnonstop

$194Southwest

Fri, Oct 16 - Mon, Oct 19

6:55 pm - 8:20 amISP Islip Long Island-BWI Baltimore/Washington

13h 25m1 stop Orlando

9:52 pm - 12:58 pmBWI Baltimore/Washington-ISP Islip Long Island

15h 06m2 stops Orlando Wilmington New Hanover County

$226Multiple Airlines

Sat, Oct 10 - Wed, Oct 14

6:25 pm - 8:20 amISP Islip Long Island-BWI Baltimore/Washington

13h 55m1 stop Orlando

7:05 pm - 5:30 pmBWI Baltimore/Washington-ISP Islip Long Island

22h 25m1 stop Orlando

$254Frontier

Thu, Oct 1 - Mon, Oct 5

5:43 pm - 8:31 amISP Islip Long Island-BWI Baltimore/Washington

14h 48m1 stop Orlando

9:32 pm - 4:58 pmBWI Baltimore/Washington-ISP Islip Long Island

19h 26m1 stop Orlando

$256Frontier

Thu, Oct 1 - Mon, Oct 5

5:43 pm - 8:31 amISP Islip Long Island-BWI Baltimore/Washington

14h 48m1 stop Orlando

9:32 pm - 12:58 pmBWI Baltimore/Washington-ISP Islip Long Island

15h 26m2 stops Orlando Wilmington New Hanover County

$274Multiple Airlines

Sat, Oct 3 - Sun, Oct 4

12:20 pm - 1:35 pmISP Islip Long Island-BWI Baltimore/Washington

1h 15mnonstop

9:10 am - 10:20 amBWI Baltimore/Washington-ISP Islip Long Island

1h 10mnonstop

$287Southwest

Sun, Nov 1 - Tue, Nov 3

5:35 am - 6:55 amISP Islip Long Island-BWI Baltimore/Washington

1h 20mnonstop

3:05 pm - 4:15 pmBWI Baltimore/Washington-ISP Islip Long Island

1h 10mnonstop

$287Southwest

Sat, Oct 17 - Mon, Oct 19

3:50 pm - 5:05 pmISP Islip Long Island-BWI Baltimore/Washington

1h 15mnonstop

1:20 pm - 2:30 pmBWI Baltimore/Washington-ISP Islip Long Island

1h 10mnonstop

$291Southwest

Recent last minute flight deals from Islip to Washington, D.C.

Tue, Sep 15 - Sat, Sep 26

5:43 pm - 8:31 amISP Islip Long Island-BWI Baltimore/Washington

14h 48m1 stop Orlando

9:27 am - 4:58 pmBWI Baltimore/Washington-ISP Islip Long Island

7h 31m1 stop Orlando

$472Frontier

Tue, Sep 15 - Sat, Sep 26

12:00 pm - 8:31 amISP Islip Long Island-BWI Baltimore/Washington

20h 31m2 stops Raleigh-Durham Orlando

9:27 am - 4:58 pmBWI Baltimore/Washington-ISP Islip Long Island

7h 31m1 stop Orlando

$496Multiple Airlines

Fri, Sep 18 - Fri, Sep 25

11:52 am - 4:46 pmISP Islip Long Island-BWI Baltimore/Washington

28h 54m2 stops Raleigh-Durham Atlanta Hartsfield-Jackson

9:32 pm - 4:58 pmBWI Baltimore/Washington-ISP Islip Long Island

19h 26m1 stop Orlando

$500Multiple Airlines

Fri, Sep 18 - Fri, Sep 25

6:48 pm - 9:59 pmISP Islip Long Island-BWI Baltimore/Washington

27h 11m1 stop Tampa

9:32 pm - 4:58 pmBWI Baltimore/Washington-ISP Islip Long Island

19h 26m1 stop Orlando

$565Frontier

Tue, Sep 15 - Mon, Sep 21

5:43 pm - 8:31 amISP Islip Long Island-BWI Baltimore/Washington

14h 48m1 stop Orlando

6:22 pm - 4:58 pmBWI Baltimore/Washington-ISP Islip Long Island

22h 36m2 stops Detroit Metropolitan Wayne County Orlando

$584Frontier

Tue, Sep 15 - Mon, Sep 21

5:43 pm - 8:31 amISP Islip Long Island-BWI Baltimore/Washington

14h 48m1 stop Orlando

9:32 pm - 4:58 pmBWI Baltimore/Washington-ISP Islip Long Island

19h 26m1 stop Orlando

$588Frontier

Fri, Sep 18 - Fri, Sep 25

6:10 am - 7:25 amISP Islip Long Island-BWI Baltimore/Washington

1h 15mnonstop

8:55 pm - 10:10 pmBWI Baltimore/Washington-ISP Islip Long Island

1h 15mnonstop

$646Southwest

Thu, Sep 17 - Sun, Sep 20

1:15 pm - 11:55 pmISP Islip Long Island-DCA Washington, D.C. Reagan-National

10h 40m2 stops West Palm Beach President Donald J. Trump Intl Orlando

12:55 pm - 11:20 pmDCA Washington, D.C. Reagan-National-ISP Islip Long Island

10h 25m1 stop Orlando

$692Southwest

Fri, Sep 18 - Sun, Sep 20

6:48 pm - 9:55 pmISP Islip Long Island-BWI Baltimore/Washington

27h 07m2 stops Tampa Atlanta Hartsfield-Jackson

10:20 am - 4:58 pmBWI Baltimore/Washington-ISP Islip Long Island

54h 38m2 stops Chicago O'Hare Intl Orlando

$707Frontier

Thu, Sep 17 - Sun, Sep 20

6:45 am - 3:30 pmISP Islip Long Island-DCA Washington, D.C. Reagan-National

8h 45m1 stop Orlando

12:55 pm - 11:20 pmDCA Washington, D.C. Reagan-National-ISP Islip Long Island

10h 25m1 stop Orlando

$720Southwest

Recent direct flight deals from Islip to Washington, D.C.

Sat, Oct 3 - Mon, Oct 5

12:20 pm - 1:35 pmISP Islip Long Island-BWI Baltimore/Washington

1h 15mnonstop

1:20 pm - 2:30 pmBWI Baltimore/Washington-ISP Islip Long Island

1h 10mnonstop

$163Southwest

Thu, Oct 1 - Mon, Oct 5

3:10 pm - 4:25 pmISP Islip Long Island-BWI Baltimore/Washington

1h 15mnonstop

3:50 pm - 5:00 pmBWI Baltimore/Washington-ISP Islip Long Island

1h 10mnonstop

$163Southwest

Fri, Oct 2 - Mon, Oct 5

5:40 pm - 6:55 pmISP Islip Long Island-BWI Baltimore/Washington

1h 15mnonstop

1:20 pm - 2:30 pmBWI Baltimore/Washington-ISP Islip Long Island

1h 10mnonstop

$194Southwest

Sat, Oct 3 - Sun, Oct 4

12:20 pm - 1:35 pmISP Islip Long Island-BWI Baltimore/Washington

1h 15mnonstop

9:10 am - 10:20 amBWI Baltimore/Washington-ISP Islip Long Island

1h 10mnonstop

$287Southwest

Sun, Nov 1 - Tue, Nov 3

5:35 am - 6:55 amISP Islip Long Island-BWI Baltimore/Washington

1h 20mnonstop

3:05 pm - 4:15 pmBWI Baltimore/Washington-ISP Islip Long Island

1h 10mnonstop

$287Southwest

Sat, Oct 17 - Mon, Oct 19

3:50 pm - 5:05 pmISP Islip Long Island-BWI Baltimore/Washington

1h 15mnonstop

1:20 pm - 2:30 pmBWI Baltimore/Washington-ISP Islip Long Island

1h 10mnonstop

$291Southwest

Sat, Nov 14 - Mon, Nov 16

12:45 pm - 2:05 pmISP Islip Long Island-BWI Baltimore/Washington

1h 20mnonstop

3:05 pm - 4:15 pmBWI Baltimore/Washington-ISP Islip Long Island

1h 10mnonstop

$291Southwest

Sat, Oct 10 - Wed, Oct 14

3:50 pm - 5:05 pmISP Islip Long Island-BWI Baltimore/Washington

1h 15mnonstop

2:35 pm - 3:45 pmBWI Baltimore/Washington-ISP Islip Long Island

1h 10mnonstop

$309Southwest

Fri, Dec 11 - Sun, Dec 13

5:40 pm - 7:00 pmISP Islip Long Island-BWI Baltimore/Washington

1h 20mnonstop

3:55 pm - 5:05 pmBWI Baltimore/Washington-ISP Islip Long Island

1h 10mnonstop

$318Southwest

Wed, Feb 10 - Sun, Feb 21

5:45 am - 7:15 amISP Islip Long Island-BWI Baltimore/Washington

1h 30mnonstop

5:35 pm - 6:45 pmBWI Baltimore/Washington-ISP Islip Long Island

1h 10mnonstop

$345Southwest

Booking Insights

Price, demand and travel trends for Islip to Washington, D.C. flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Islip to Washington, D.C. with more confidence.

Prices

Airlines

Layovers

How much is a round-trip flight from Islip to Washington, D.C.?

Round-trip flights from Islip to Washington, D.C. start at $163. Prices are below average for this route right now, with typical round-trip fares ranging from $320 to $1,108. The lowest price found in the past 5 days was $163 on Southwest.

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

Islip (ISP) to Washington, D.C. Dulles Intl Airport (IAD) is the cheapest Islip to Washington, D.C. route, averaging $606 round-trip. Other Islip to Washington, D.C. routes average $1,108, based on KAYAK data over the past 12 months.

Find deals

Cheapest flight	$82

Flight from Islip to Baltimore

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

Are your dates flexible? Find out the best times to travel from Islip to Washington, D.C. based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Which airports can I use when flying from Islip to Washington, D.C.?
Flights from Islip to Washington, D.C. usually depart from Islip Long Island (ISP) and may arrive at several airports in Washington, D.C. area, including Washington, D.C. Reagan-National (DCA) and Washington, D.C. Dulles Intl (IAD).
What cabin classes can I book on flights from Islip to Washington, D.C.?
Only Economy Class is available on flights from Islip to Washington, D.C..
Which airports do connecting flights from Islip to Washington, D.C. pass through?
Connecting flights from Islip to Washington, D.C. most commonly pass through:

• Boston Logan Intl (BOS) - 50% of one-stop connections
• Orlando (MCO) - 50% of one-stop connections
Together, these airports account for 100% of one-stop bookings on this route.
Can I save money by using flexible dates for flights from Islip to Washington, D.C.?
Yes. Being flexible with your travel dates can save you up to 46% on the Islip to Washington, D.C. route. Monday is the cheapest departure day at $606 round-trip on average, while Friday is the most expensive at $1,108, a difference of $502. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.
What popular places can I visit in Washington, D.C.?
Some of the most popular sights in Washington, D.C. are Walter E. Washington Convention Center, National Mall and Capital One Arena. These are among the most viewed places in Washington, D.C. on KAYAK.
How long is a flight from Islip to Washington, D.C.?
There are currently no nonstop flights available from Islip to Washington, D.C.. Flights with 1 layover take between 4h 12m and 13h 41m in total, depending on the connection.
Do I need a passport to fly from Islip to Washington, D.C.?
No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.
Have flight prices from Islip to Washington, D.C. changed much recently?
Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $163 to $1,541. That means the highest observed fare was about 9x higher than the lowest one.
How are flight prices from Islip to Washington, D.C. looking right now?
One-way fares from Islip to Washington, D.C. are currently higher than usual. Average one-way flight prices are about $109, which is 55% above the typical average for this route.
How much time can I save by choosing a different layover airport from Islip to Washington, D.C.?
Flying via Boston Logan Intl (BOS) gives the shortest average 1-stop total travel time at 4h 12m, compared with 13h 41m via Orlando (MCO).
What car rental options are available in Washington, D.C.?
Since Washington, D.C. is served by multiple airports, car rental options and rates can vary depending on which one you fly into.
Near Washington, D.C. Reagan-National Airport (DCA) — daily rates from around $23:

• Sixt
• Dollar
• Thrifty
• Alamo
• Budget

Near Washington, D.C. Dulles Intl Airport (IAD) — daily rates from around $24:

• Dollar
• Budget
• Hertz
• Sixt
• Thrifty

If your dates can be flexible, aim for a Monday departure instead of Friday. On this route, Monday flights average $606 - about $502 less than Friday (45% savings) based on the last 12 months.
If you're arriving late at night and need somewhere to stay, check out these hotels close to Washington, D.C. Reagan-National Airport.
- Hyatt House Washington DC The Wharf
- Intercontinental Hotels Washington D.C. - The Wharf By IHG
- Pendry Washington DC - The Wharf

More options for your flight from Islip to Washington, D.C.

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Complete your trip to Washington, D.C. with a hotel stay or car rental

Car rentals in Washington, D.C.

Hotels in Washington, D.C.

Vacations in Washington, D.C.

ISP - WAS

$82 Find Cheap Flights from Islip to Washington, D.C. - Compare and Save

Everything you should know

Cheap Flights from Islip to Washington, D.C. (ISP-WAS)

Recent round-trip flight deals from Islip to Washington, D.C.

Recent one-way flight deals from Islip to Washington, D.C.

Recent last minute flight deals from Islip to Washington, D.C.

Recent direct flight deals from Islip to Washington, D.C.

Price, demand and travel trends for Islip to Washington, D.C. flights

How much is a round-trip flight from Islip to Washington, D.C.?

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

What is the cheapest airline to fly from Islip to Washington, D.C.?

What is the most popular layover airport when flying from Islip to Washington, D.C.?

What is the cheapest layover airport when flying from Islip to Washington, D.C.?

When flying from Islip to Washington, D.C. which airport offers the shortest layover?

Key details for Islip to Washington, D.C. flights

Cheapest flight

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

Your Islip to Washington, D.C. flight questions, answered

Your guide to booking Islip to Washington, D.C. flights

More options for your flight from Islip to Washington, D.C.

Complete your trip to Washington, D.C. with a hotel stay or car rental

Information on your arrival and departure airports

Cabin class types available on flights from Islip to Washington, D.C.

Find direct flights to and from Islip and Washington, D.C.

Flights from domestic origins to Washington, D.C.

Choose which airport to fly into in Washington, D.C.

Flights to other popular destinations

Find deals for your return flight