What airlines fly to State of Washington?

Alaska Airlines, United Airlines and Delta are the top three most popular airlines that fly to State of Washington from Islip, New York according to our data. Alaska Airlines is the first choice among our users, with 50% of people opting to fly with this airline when traveling to State of Washington. Keep in mind that there are 7 different airlines that fly to State of Washington 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 Washington?

Southwest is the most popular carrier operating from Islip Long Island to Washington

When did momondo last update prices for flights from Islip Long Island Airport to Washington?

Prices for flights from Islip Long Island Airport to Washington were last updated today.

How old do you have to be to fly from Islip Long Island Airport to Washington?

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 Washington.

What documentation or ID do you need to fly to Washington?

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

$165 Cheap Flights from Islip, New York to Washington in 2026/27

Find the cheapest flights from Islip, New York to Washington

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:30 pm - 10:15 pmISP Islip Long Island-SEA Seattle/Tacoma Intl

12h 45m2 stops Baltimore/Washington Las Vegas Harry Reid Intl

12:15 am - 4:15 pmSEA Seattle/Tacoma Intl-ISP Islip Long Island

13h 00m2 stops Chicago Midway Baltimore/Washington

$454Southwest

Tue, Nov 3 - Mon, Nov 9

12:25 pm - 11:05 pmISP Islip Long Island-SEA Seattle/Tacoma Intl

13h 40m2 stops Baltimore/Washington Denver Intl

8:30 am - 11:35 pmSEA Seattle/Tacoma Intl-ISP Islip Long Island

12h 05m2 stops Austin Bergstrom Baltimore/Washington

$507Southwest

Thu, Nov 5 - Mon, Nov 9

6:15 am - 4:30 pmISP Islip Long Island-SEA Seattle/Tacoma Intl

13h 15m2 stops Baltimore/Washington Denver Intl

12:10 am - 3:45 pmSEA Seattle/Tacoma Intl-ISP Islip Long Island

12h 35m2 stops Chicago Midway Baltimore/Washington

$514Southwest

Sat, Oct 24 - Mon, Oct 26

7:44 am - 8:17 pmISP Islip Long Island-SEA Seattle/Tacoma Intl

15h 33m1 stop Boston Logan Intl

4:54 pm - 11:09 amSEA Seattle/Tacoma Intl-ISP Islip Long Island

15h 15m2 stops San Diego Boston Logan Intl

$1,214Multiple Airlines

Sat, Oct 24 - Tue, Oct 27

7:44 am - 8:17 pmISP Islip Long Island-SEA Seattle/Tacoma Intl

15h 33m1 stop Boston Logan Intl

7:18 am - 7:49 pmSEA Seattle/Tacoma Intl-ISP Islip Long Island

9h 31m1 stop Boston Logan Intl

$1,304Multiple Airlines

Sat, Oct 24 - Tue, Oct 27

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Southwest flights from Islip, New York to State of Washington

Our best Southwest deals on Islip, New York to State of Washington flight tickets

Southwest

Nov 3

ISP12:30 pmIslip Long Island

12h 45m

2 stops

SEA10:15 pmSeattle/Tacoma Intl

Nov 9

SEA12:15 amSeattle/Tacoma Intl

13h 00m

2 stops

ISP4:15 pmIslip Long Island

$454

Southwest

Nov 5

ISP12:25 pmIslip Long Island

13h 40m

2 stops

SEA11:05 pmSeattle/Tacoma Intl

Nov 9

SEA8:30 amSeattle/Tacoma Intl

12h 05m

2 stops

ISP11:35 pmIslip Long Island

$507

Southwest

Oct 24

ISP6:15 amIslip Long Island

13h 15m

2 stops

SEA4:30 pmSeattle/Tacoma Intl

Oct 26

SEA12:10 amSeattle/Tacoma Intl

12h 35m

2 stops

ISP3:45 pmIslip Long Island

$514

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IslipSeattle

ISP Islip Long Island - SEA Seattle/Tacoma Intl

ISPSEA

Islip Long Island

Tue 11/3

12:30 pm-10:15 pm

2 stops12h 45m

Seattle/Tacoma Intl

Mon 11/9

12:15 am-4:15 pm

2 stops13h 00m

$454

IslipSeattle

ISP Islip Long Island - SEA Seattle/Tacoma Intl

ISPSEA

Islip Long Island

Thu 11/5

12:25 pm-11:05 pm

2 stops13h 40m

Seattle/Tacoma Intl

Mon 11/9

8:30 am-11:35 pm

2 stops12h 05m

$507

IslipSeattle

ISP Islip Long Island - SEA Seattle/Tacoma Intl

ISPSEA

Islip Long Island

Sat 10/24

6:15 am-4:30 pm

2 stops13h 15m

Seattle/Tacoma Intl

Mon 10/26

12:10 am-3:45 pm

2 stops12h 35m

$514

IslipSeattle

ISP Islip Long Island - SEA Seattle/Tacoma Intl

ISPSEA

Islip Long Island

Sat 10/24

7:44 am-8:17 pm

1 stop15h 33m

Seattle/Tacoma Intl

Tue 10/27

4:54 pm-11:09 am

2 stops15h 15m

$1,214

Quickest round-trip

IslipSeattle

ISP Islip Long Island - SEA Seattle/Tacoma Intl

ISPSEA

Islip Long Island

Sat 10/24

7:44 am-8:17 pm

1 stop15h 33m

Seattle/Tacoma Intl

Tue 10/27

7:18 am-7:49 pm

1 stop9h 31m

$1,304

Cheapest one-way

Quickest one-way

IslipSeattle

ISP Islip Long Island - SEA Seattle/Tacoma Intl

ISPSEA

Islip Long Island

Wed 11/18

12:30 pm-10:50 pm

2 stops13h 20m

$165

IslipSeattle

ISP Islip Long Island - SEA Seattle/Tacoma Intl

ISPSEA

Islip Long Island

Fri 11/6

12:25 pm-11:05 pm

2 stops13h 40m

$232

IslipSeattle

ISP Islip Long Island - SEA Seattle/Tacoma Intl

ISPSEA

Islip Long Island

Fri 11/6

11:13 am-3:12 pm

3 stops30h 59m

$420

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Islip, New York to State of Washington

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

Can stopping save me money on Islip, New York to State of Washington flights?

You could potentially save up to 25% on your flight if you consider stops on a Islip, New York to State of Washington flight.

Cheap Islip, New York to State of Washington flight deals and tips

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

Best Price Found	$165
Fastest flight time	10h 25m
Direct flights	None

The best one-way flight to State of Washington from Islip, New York in the past 72 hours is $165. The best round-trip flight deal from Islip, New York to State of Washington found on momondo in the last 72 hours is $454.

The fastest flight from Islip, New York to State of Washington takes 10h 25m

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

Search flight deals

Frequently asked questions about flying from Islip, New York to Washington

When did momondo last update prices for flights from Islip Long Island Airport to Washington?
Prices for flights from Islip Long Island Airport to Washington were last updated today.
How old do you have to be to fly from Islip Long Island Airport to Washington?
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 Washington.
What documentation or ID do you need to fly to Washington?
The travel and health documents required for your trip to Washington 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. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Why use momondo?

Why should I use momondo to find a flight deal from Islip to Washington?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Islip to Washington. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Islip to Washington with flexible booking policies on momondo?

Flights from Islip to Washington with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Islip to Washington?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Washington from Islip.

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

Yes. momondo can track prices for Islip to Washington flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.