How long is the flight from State of Washington to Islip, New York?

There are many flights that can get you from State of Washington to Islip, New York in 11h 40m. Fly via Southwest to get the fastest option. There are 2474 mi between State of Washington and Islip, New York.

In terms of precipitation, rainfall in Islip, New York ranges from 3.3 - 4.4 inches per month. March is typically the wettest month, when rainfall can reach 4.4 in. February is typically the driest time to visit Islip, New York when rainfall is around 3.3 in.

If weather is an important factor for your trip to Islip, New York, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

What are the most popular routes from State of Washington to Islip, New York?

Most travelers choose Seattle/Tacoma Intl - Islip Long Island, Portland - Islip Long Island or Pasco Tri Cities - Islip Long Island when deciding on the best route from State of Washington to Islip, New York.

What is the cheapest time of day to fly from WA to ISP?

When flying from State of Washington to Islip, New York, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What airport do you fly into for flights to Islip from Washington?

If you book a flight to Islip from Washington, you will be flying to Long Island, which is the city’s only airport. Islip Long Island (ISP) is located 7.2 mi from the center of Islip.

Can I find deals for flights from Washington to Islip that include hotel bookings?

Yes. In addition to deals on Washington to Islip flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Washington to Islip?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Islip.

Can I find deals for business class flights from Washington to Islip?

Yes. Cheapflights offers flight deals from Washington to Islip by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$248+ Flights from Washington to Islip, NY

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Cheap flight deals from Washington to Islip

Most accurate provider	CheapOair 3 stars
Most trusted provider	CheapOair 3 stars
Round-trip from	$588 (Southwest)
One-way from	$248 (Kiwi.com)
Popular in	December
Cheapest in	September
Average price	$317

Provider with most accurate pricing for Seattle/Tacoma Intl-New York (NYC) flight deals.

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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-New York (NYC) flights.

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From Washington to Islip Long Island

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One-way flight from Washington to Islip Long Island

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Highest demand for flights based on searches. 6% potential increase in price ($27 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).

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Average for round-trip flights in October 2025

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Find flight deals from Washington to Islip

Cheapest flights from Washington to Islip
Explore the most affordable flight options available from Washington to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 28, 2025.

Sat 11/86:00 amPDX - ISP

2 stops11h 40mSouthwest

Sat 11/1511:55 amISP - PDX

2 stops11h 30mSouthwest

Deal found 10/27

$742

Mon 11/107:00 amPDX - ISP

1 stop9h 45mMultiple Airlines

Fri 11/149:59 amISP - PDX

1 stop13h 08mMultiple Airlines

Deal found 10/26

$1,174

Sat 11/87:00 amPDX - ISP

1 stop9h 45mMultiple Airlines

Sat 11/159:59 amISP - PDX

1 stop13h 08mMultiple Airlines

Deal found 10/27

$1,259

Best flights from Washington to Islip
Discover carefully curated flight deals from Washington to Islip that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 28, 2025.

Sat 11/86:00 amPDX - ISP

2 stops11h 40mSouthwest

Sat 11/1511:55 amISP - PDX

2 stops11h 30mSouthwest

Deal found 10/27

$742

Thu 3/198:20 amSEA - ISP

1 stop8h 25mMultiple Airlines

Sun 3/227:30 amISP - SEA

1 stop8h 56mMultiple Airlines

Deal found 10/26

$920

Sun 2/17:55 amSEA - ISP

1 stop8h 50mMultiple Airlines

Sat 2/287:30 amISP - SEA

1 stop8h 53mMultiple Airlines

Deal found 10/28

$949

Sat 3/288:20 amSEA - ISP

1 stop8h 25mMultiple Airlines

Wed 4/87:30 amISP - SEA

1 stop8h 56mMultiple Airlines

Deal found 10/28

$1,024

Sat 3/288:20 amSEA - ISP

1 stop8h 25mMultiple Airlines

Tue 4/77:30 amISP - SEA

1 stop8h 56mMultiple Airlines

Deal found 10/28

$1,024

Mon 2/97:55 amSEA - ISP

1 stop8h 50mMultiple Airlines

Fri 2/137:30 amISP - SEA

1 stop8h 53mMultiple Airlines

Deal found 10/27

$1,058

Mon 11/107:00 amPDX - ISP

1 stop9h 45mMultiple Airlines

Fri 11/149:59 amISP - PDX

1 stop13h 08mMultiple Airlines

Deal found 10/26

$1,174

Sat 11/87:00 amPDX - ISP

1 stop9h 45mMultiple Airlines

Sat 11/159:59 amISP - PDX

1 stop13h 08mMultiple Airlines

Deal found 10/27

$1,259

Last-minute flights from Washington to Islip
Discover last-minute flight deals from Washington to Islip. Data last updated October 28, 2025 and is based on user searches.

Sat 11/86:00 amPDX - ISP

2 stops11h 40mSouthwest

Sat 11/1511:55 amISP - PDX

2 stops11h 30mSouthwest

Deal found 10/27

$742

Sat 11/87:00 amPDX - ISP

1 stop9h 45mMultiple Airlines

Sat 11/159:59 amISP - PDX

1 stop13h 08mMultiple Airlines

Deal found 10/27

$1,259

Mon 11/107:00 amPDX - ISP

1 stop9h 45mMultiple Airlines

Fri 11/149:59 amISP - PDX

1 stop13h 08mMultiple Airlines

Deal found 10/26

$1,174

One-way flights from Washington to Islip
Search for one-way flight options from Washington to Islip. Find affordable one-way fares based on user searches. Data last updated October 28, 2025.

Tue 12/236:33 pmSEA - ISP

3 stops37h 52mMultiple Airlines

Deal found 10/28

$248

Tue 12/238:35 pmSEA - ISP

2 stops15h 45mSouthwest

Deal found 10/28

$270

Mon 12/811:10 pmSEA - ISP

1 stop8h 54mMultiple Airlines

Deal found 10/28

$413

Thu 1/227:55 amSEA - ISP

1 stop8h 50mMultiple Airlines

Deal found 10/27

$418

Thu 12/411:10 pmSEA - ISP

1 stop8h 54mMultiple Airlines

Deal found 10/28

$423

Wed 12/311:10 pmSEA - ISP

1 stop8h 54mMultiple Airlines

Deal found 10/27

$443

Thu 12/2511:25 pmSEA - ISP

1 stop8h 39mMultiple Airlines

Deal found 10/27

$448

Mon 12/88:44 pmPDX - ISP

2 stops11h 20mMultiple Airlines

Deal found 10/26

$468

Sun 11/1611:10 pmSEA - ISP

1 stop8h 54mMultiple Airlines

Deal found 10/27

$472

Fri 11/1411:10 pmSEA - ISP

1 stop8h 54mMultiple Airlines

Deal found 10/28

$482

Sun 12/148:44 pmPDX - ISP

2 stops11h 20mMultiple Airlines

Deal found 10/28

$501

Thu 11/1311:10 pmSEA - ISP

1 stop8h 54mMultiple Airlines

Deal found 10/28

$501

Fly from

Fly to

Route

Depart

Return

Price

PortlandIslip

PDX - ISP

PDXISP

Portland

Sat 11/8

6:00 am-8:40 pm

2 stops11h 40m

Islip Long Island

Sat 11/15

11:55 am-8:25 pm

2 stops11h 30m

$742

SeattleIslip

SEA - ISP

SEAISP

Seattle/Tacoma Intl

Thu 3/19

8:20 am-7:45 pm

1 stop8h 25m

Islip Long Island

Sun 3/22

7:30 am-1:26 pm

1 stop8h 56m

$920

SeattleIslip

SEA - ISP

SEAISP

Seattle/Tacoma Intl

Sun 2/1

7:55 am-7:45 pm

1 stop8h 50m

Islip Long Island

Sat 2/28

7:30 am-1:23 pm

1 stop8h 53m

$949

SeattleIslip

SEA - ISP

SEAISP

Seattle/Tacoma Intl

Sat 3/28

8:20 am-7:45 pm

1 stop8h 25m

Islip Long Island

Wed 4/8

7:30 am-1:26 pm

1 stop8h 56m

$1,024

SeattleIslip

SEA - ISP

SEAISP

Seattle/Tacoma Intl

Sat 3/28

8:20 am-7:45 pm

1 stop8h 25m

Islip Long Island

Tue 4/7

7:30 am-1:26 pm

1 stop8h 56m

$1,024

SeattleIslip

SEA - ISP

SEAISP

Seattle/Tacoma Intl

Mon 2/9

7:55 am-7:45 pm

1 stop8h 50m

Islip Long Island

Fri 2/13

7:30 am-1:23 pm

1 stop8h 53m

$1,058

PortlandIslip

PDX - ISP

PDXISP

Portland

Mon 11/10

7:00 am-7:45 pm

1 stop9h 45m

Islip Long Island

Fri 11/14

9:59 am-8:07 pm

1 stop13h 08m

$1,174

PortlandIslip

PDX - ISP

PDXISP

Portland

Sat 11/8

7:00 am-7:45 pm

1 stop9h 45m

Islip Long Island

Sat 11/15

9:59 am-8:07 pm

1 stop13h 08m

$1,259

SeattleIslip

SEA - ISP

SEAISP

Seattle/Tacoma Intl

Tue 12/23

6:33 pm-11:25 am

3 stops37h 52m

$248

SeattleIslip

SEA - ISP

SEAISP

Seattle/Tacoma Intl

Tue 12/23

8:35 pm-3:20 pm

2 stops15h 45m

$270

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 28 results

Best time to book a flight from Washington to Islip

Have a flexible travel schedule? Discover the best time to fly to Islip from Washington with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington to Islip

What is the cheapest month to book a flight from State of Washington to Islip, New York?

Currently, November is the cheapest month in which you can book a flight from State of Washington to Islip, New York (average of $128). Flying from State of Washington to Islip, New York in January is currently the most expensive (average of $222). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

What airport do you fly into for flights to Islip from Washington?
If you book a flight to Islip from Washington, you will be flying to Long Island, which is the city’s only airport. Islip Long Island (ISP) is located 7.2 mi from the center of Islip.
How long is the flight from State of Washington to Islip, New York?
There are many flights that can get you from State of Washington to Islip, New York in 11h 40m. Fly via Southwest to get the fastest option. There are 2474 mi between State of Washington and Islip, New York.
What are the most popular routes from State of Washington to Islip, New York?
Most travelers choose Seattle/Tacoma Intl - Islip Long Island, Portland - Islip Long Island or Pasco Tri Cities - Islip Long Island when deciding on the best route from State of Washington to Islip, New York.
Can I find deals for flights from Washington to Islip that include hotel bookings?
Yes. In addition to deals on Washington to Islip flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Washington to Islip?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Islip.
Can I find deals for business class flights from Washington to Islip?
Yes. Cheapflights offers flight deals from Washington to Islip by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from State of Washington to Islip, New York?
Currently, November is the cheapest month in which you can book a flight from State of Washington to Islip, New York (average of $128). Flying from State of Washington to Islip, New York in January is currently the most expensive (average of $222). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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$248+ Cheap flights from Washington to Islip, NY (ISP)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/23. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Washington to Islip with Cheapflights

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Cheap flight deals from Washington to Islip

Keep the following information in mind while searching for Washington to Islip flight deals. Data was last updated October 28, 2025.

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Round-trip from

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Find flight deals from Washington to Islip

Cheapest flights from Washington to IslipExplore the most affordable flight options available from Washington to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 28, 2025.

Explore the most affordable flight options available from Washington to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 28, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington to Islip that are best for you.

Best time to book a flight from Washington to Islip

Have a flexible travel schedule? Discover the best time to fly to Islip from Washington with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Washington to Islip

What is the cheapest month to book a flight from State of Washington to Islip, New York?

Related info for your journey

Find useful and relevant information for your journey from Washington to Islip. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Islip from Washington?

How long is the flight from State of Washington to Islip, New York?

What are the most popular routes from State of Washington to Islip, New York?

Can I find deals for flights from Washington to Islip that include hotel bookings?

How can I find direct flights from Washington to Islip?

Can I find deals for business class flights from Washington to Islip?

What is the cheapest month to book a flight from State of Washington to Islip, New York?

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Cheapest flights from Washington to Islip
Explore the most affordable flight options available from Washington to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 28, 2025.