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

Flights from Islip to Washington, D.C. Dulles Intl Airport usually depart from Islip Long Island (ISP) and arrive at Washington, D.C. Dulles Intl (IAD).

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

Most connecting flights from Islip to Washington, D.C. Dulles Intl Airport pass through Orlando (MCO), which handles 100% of one-stop traffic on this route.

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

Yes. Flexible dates can save you up to 48% on flights from Islip to Washington, D.C. Dulles Intl Airport. Friday is the cheapest departure day at $320 round-trip on average, while Monday is the most expensive at $606, a difference of $286. 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. Dulles Intl Airport?

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

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

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. Dulles Intl Airport 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 $266 to $1,464. That means the highest observed fare was about 6x higher than the lowest one.

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

One-way fares from Islip to Washington, D.C. Dulles Intl Airport are currently higher than usual. Average one-way flight prices are about $136, which is 94% above the typical average for this route.

What car rental options are available at Washington, D.C. Dulles Intl Airport (IAD)?

Washington, D.C. Dulles Intl Airport (IAD) hosts 5 major car rental companies, with daily rates starting from around $24 for economy cars. Top options include: • Dollar • Hertz • Budget • Sixt • Thrifty

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

Round-trip flights from Islip to Washington, D.C. Dulles Intl Airport typically range from $320 to $606. The lowest price found in the past 5 days was $266, on Frontier.

Which airline is the cheapest to fly from Islip to Washington, D.C. Dulles Intl Airport?

Frontier ($266) offered the cheapest round-trip ticket from Islip to Washington, D.C. Dulles Intl Airport in the last 5 days.

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

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. Dulles Intl Airport which airport offers the shortest layover?

Orlando (MCO) had the shortest average connection time for Islip to Washington, D.C. Dulles Intl Airport layovers at 10h 57m over the past 3 months.

$118 CHEAP FLIGHTS from Islip to Washington Dulles (ISP - IAD)

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Cheapest round-trip

$266

Typical prices: $320-$606

Frontier

Fri 10/26Tue 10/30

ISP - IAD • 1 stop

Cheapest one-way

$118

Typical prices: $70-$70

Multiple Airlines

Sat 11/3

ISP - IAD • 3 stops

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

Cheap Flights from Islip to Dulles Intl (ISP-IAD)

Cheap flights from Islip to Dulles Intl with top airlines, updated regularly. Compare round-trip, one-way, direct and last-minute deals.

Round-trip

One-way

Last minute

Mon, Oct 26 - Fri, Oct 30

6:55 pm - 10:21 amISP Islip Long Island-IAD Washington, D.C. Dulles Intl

15h 26m1 stop Orlando

9:06 pm - 5:31 pmIAD Washington, D.C. Dulles Intl-ISP Islip Long Island

20h 25m2 stops Atlanta Hartsfield-Jackson Orlando

$266Frontier

Wed, Nov 18 - Mon, Nov 23

12:00 pm - 11:43 pmISP Islip Long Island-IAD Washington, D.C. Dulles Intl

11h 43m2 stops Raleigh-Durham Atlanta Hartsfield-Jackson

9:35 pm - 3:45 pmIAD Washington, D.C. Dulles Intl-ISP Islip Long Island

18h 10m1 stop Orlando

$295Multiple Airlines

Wed, Nov 18 - Mon, Nov 23

12:00 pm - 11:43 pmISP Islip Long Island-IAD Washington, D.C. Dulles Intl

11h 43m2 stops Raleigh-Durham Atlanta Hartsfield-Jackson

9:35 pm - 3:45 pmIAD Washington, D.C. Dulles Intl-ISP Islip Long Island

18h 10m1 stop Orlando

$296Multiple Airlines

Fri, Nov 13 - Wed, Nov 18

9:33 pm - 9:21 amISP Islip Long Island-IAD Washington, D.C. Dulles Intl

11h 48m1 stop Vero Beach

7:48 am - 10:17 amIAD Washington, D.C. Dulles Intl-ISP Islip Long Island

26h 29m2 stops Atlanta Hartsfield-Jackson Raleigh-Durham

$298Multiple Airlines

Mon, Oct 26 - Fri, Oct 30

6:55 pm - 5:12 pmISP Islip Long Island-IAD Washington, D.C. Dulles Intl

22h 17m2 stops Orlando Atlanta Hartsfield-Jackson

9:06 pm - 5:31 pmIAD Washington, D.C. Dulles Intl-ISP Islip Long Island

20h 25m2 stops Atlanta Hartsfield-Jackson Orlando

$304Frontier

Tue, Nov 10 - Wed, Nov 18

10:25 am - 9:21 amISP Islip Long Island-IAD Washington, D.C. Dulles Intl

22h 56m1 stop Vero Beach

6:07 pm - 10:17 amIAD Washington, D.C. Dulles Intl-ISP Islip Long Island

16h 10m2 stops Atlanta Hartsfield-Jackson Raleigh-Durham

$305Multiple Airlines

Mon, Oct 26 - Fri, Oct 30

6:55 pm - 10:21 amISP Islip Long Island-IAD Washington, D.C. Dulles Intl

15h 26m1 stop Orlando

7:53 pm - 2:45 pmIAD Washington, D.C. Dulles Intl-ISP Islip Long Island

18h 52m1 stop Vero Beach

$323Multiple Airlines

Tue, Nov 10 - Mon, Nov 16

12:00 pm - 10:21 amISP Islip Long Island-IAD Washington, D.C. Dulles Intl

22h 21m2 stops Raleigh-Durham Orlando

7:53 pm - 9:45 amIAD Washington, D.C. Dulles Intl-ISP Islip Long Island

13h 52m1 stop Vero Beach

$327Multiple Airlines

Wed, Nov 11 - Fri, Nov 13

12:00 pm - 11:43 pmISP Islip Long Island-IAD Washington, D.C. Dulles Intl

11h 43m2 stops Raleigh-Durham Atlanta Hartsfield-Jackson

7:53 pm - 2:45 pmIAD Washington, D.C. Dulles Intl-ISP Islip Long Island

18h 52m1 stop Vero Beach

$333Multiple Airlines

Sun, Nov 15 - Wed, Nov 18

6:49 pm - 10:40 amISP Islip Long Island-IAD Washington, D.C. Dulles Intl

15h 51m1 stop Sarasota Bradenton Intl

6:07 pm - 10:17 amIAD Washington, D.C. Dulles Intl-ISP Islip Long Island

16h 10m2 stops Atlanta Hartsfield-Jackson Raleigh-Durham

$335Multiple Airlines

Fri, Oct 16 - Sun, Oct 18

6:55 pm - 10:17 amISP Islip Long Island-IAD Washington, D.C. Dulles Intl

15h 22m1 stop Orlando

11:12 am - 5:30 pmIAD Washington, D.C. Dulles Intl-ISP Islip Long Island

6h 18m1 stop Orlando

$598Frontier

Fri, Oct 16 - Fri, Oct 23

6:55 pm - 10:17 amISP Islip Long Island-IAD Washington, D.C. Dulles Intl

15h 22m1 stop Orlando

9:06 pm - 5:30 pmIAD Washington, D.C. Dulles Intl-ISP Islip Long Island

20h 24m2 stops Atlanta Hartsfield-Jackson Orlando

$629Frontier

Fri, Oct 16 - Fri, Oct 23

6:55 pm - 10:17 amISP Islip Long Island-IAD Washington, D.C. Dulles Intl

15h 22m1 stop Orlando

11:12 am - 6:00 pmIAD Washington, D.C. Dulles Intl-ISP Islip Long Island

6h 48m1 stop Orlando

$643Frontier

Fri, Oct 16 - Fri, Oct 23

6:55 pm - 5:13 pmISP Islip Long Island-IAD Washington, D.C. Dulles Intl

22h 18m2 stops Orlando Atlanta Hartsfield-Jackson

9:06 pm - 5:30 pmIAD Washington, D.C. Dulles Intl-ISP Islip Long Island

20h 24m2 stops Atlanta Hartsfield-Jackson Orlando

$653Frontier

Tue, Oct 13 - Wed, Oct 14

12:09 pm - 9:21 amISP Islip Long Island-IAD Washington, D.C. Dulles Intl

21h 12m1 stop Vero Beach

9:06 pm - 5:30 pmIAD Washington, D.C. Dulles Intl-ISP Islip Long Island

20h 24m2 stops Atlanta Hartsfield-Jackson Orlando

$695Multiple Airlines

Mon, Oct 12 - Wed, Oct 14

6:55 pm - 10:17 amISP Islip Long Island-IAD Washington, D.C. Dulles Intl

15h 22m1 stop Orlando

9:06 pm - 5:30 pmIAD Washington, D.C. Dulles Intl-ISP Islip Long Island

20h 24m2 stops Atlanta Hartsfield-Jackson Orlando

$809Frontier

Fri, Oct 16 - Fri, Oct 23

6:55 pm - 8:11 pmISP Islip Long Island-IAD Washington, D.C. Dulles Intl

25h 16m3 stops Orlando Atlanta Hartsfield-Jackson Fort Lauderdale

7:21 pm - 5:30 pmIAD Washington, D.C. Dulles Intl-ISP Islip Long Island

22h 09m2 stops Minneapolis St Paul Orlando

$825Multiple Airlines

Sun, Oct 11 - Mon, Oct 12

6:25 pm - 10:17 amISP Islip Long Island-IAD Washington, D.C. Dulles Intl

15h 52m1 stop Orlando

7:53 pm - 11:20 amIAD Washington, D.C. Dulles Intl-ISP Islip Long Island

15h 27m1 stop Vero Beach

$928Multiple Airlines

Tue, Oct 13 - Wed, Oct 14

12:09 pm - 9:21 amISP Islip Long Island-IAD Washington, D.C. Dulles Intl

21h 12m1 stop Vero Beach

1:49 pm - 10:17 amIAD Washington, D.C. Dulles Intl-ISP Islip Long Island

20h 28m2 stops Vero Beach Raleigh-Durham

$1,085Breeze Airways

Wed, Oct 14 - Thu, Oct 15

12:30 pm - 7:53 pmISP Islip Long Island-IAD Washington, D.C. Dulles Intl

7h 23m1 stop Boston Logan Intl

12:38 pm - 7:49 pmIAD Washington, D.C. Dulles Intl-ISP Islip Long Island

7h 11m2 stops Newark Boston Logan Intl

$1,187Multiple Airlines

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

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

Prices

Airlines

Layovers

How much is a round-trip flight from Islip to Washington, D.C. Dulles Intl Airport? This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Islip to Washington, D.C. Dulles Intl Airport departing in october.

Find deals

Cheapest flight	$118

One-way flight from Islip to Washington, D.C. Dulles Intl Airport

When to book flights from Islip to Dulles Intl

Are your dates flexible? Find out the best times to travel from Islip to Dulles Intl 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.

Do I need a passport to fly from Islip to Washington, D.C. Dulles Intl Airport?
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. Dulles Intl Airport 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 $266 to $1,464. That means the highest observed fare was about 6x higher than the lowest one.
How are flight prices from Islip to Washington, D.C. Dulles Intl Airport looking right now?
One-way fares from Islip to Washington, D.C. Dulles Intl Airport are currently higher than usual. Average one-way flight prices are about $136, which is 94% above the typical average for this route.
What car rental options are available at Washington, D.C. Dulles Intl Airport (IAD)?
Washington, D.C. Dulles Intl Airport (IAD) hosts 5 major car rental companies, with daily rates starting from around $24 for economy cars. Top options include:

• Dollar
• Hertz
• Budget
• Sixt
• Thrifty
Which airports can I use when flying from Islip to Washington, D.C. Dulles Intl Airport?
Flights from Islip to Washington, D.C. Dulles Intl Airport usually depart from Islip Long Island (ISP) and arrive at Washington, D.C. Dulles Intl (IAD).
Which airports do connecting flights from Islip to Washington, D.C. Dulles Intl Airport pass through?
Most connecting flights from Islip to Washington, D.C. Dulles Intl Airport pass through Orlando (MCO), which handles 100% of one-stop traffic on this route.
Can I save money by using flexible dates for flights from Islip to Washington, D.C. Dulles Intl Airport?
Yes. Flexible dates can save you up to 48% on flights from Islip to Washington, D.C. Dulles Intl Airport. Friday is the cheapest departure day at $320 round-trip on average, while Monday is the most expensive at $606, a difference of $286.

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

If your dates are flexible, aim for a Friday departure and avoid flying on Monday. On this route, Friday flights average $320, about $286 less than Monday fares (47% savings) based on the last 12 months.

More options for your flight from Islip to Dulles Intl

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ISP - IAD

$118 Find Cheap Flights from Islip to Washington Dulles Airport - Compare and Save

Everything you should know

Cheap Flights from Islip to Dulles Intl (ISP-IAD)

Cheap flights from Islip to Dulles Intl with top airlines, updated regularly. Compare round-trip, one-way, direct and last-minute deals.

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

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

Which airline is the cheapest to fly from Islip to Washington, D.C. Dulles Intl Airport?

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

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

Key details for Islip to Washington, D.C. Dulles Intl Airport flights

Cheapest flight

When to book flights from Islip to Dulles Intl

Your Islip to Washington, D.C. Dulles Intl Airport flight questions, answered

Your guide to booking Islip to Washington, D.C. Dulles Intl Airport flights

More options for your flight from Islip to Dulles Intl

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 to Dulles Intl

Find direct flights to and from Islip and Dulles Intl

Flights from domestic origins to Dulles Intl

Choose which airport to fly into in Islip

Flights to other popular destinations

Find deals for your return flight