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Cheap flights from Seattle to New York from $325

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to New York departing on 11/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Seattle to New York

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
10:50 pm - 10:04 amSEA-ISP
8h 14m1 stop
Multiple Airlines Logo
7:30 am - 1:23 pmISP-SEA
8h 53m1 stop
$914Multiple Airlines
Find Deal
Sat, Mar 7 - Sun, Mar 15
Multiple Airlines Logo
7:55 am - 7:45 pmSEA-ISP
8h 50m1 stop
Multiple Airlines Logo
7:30 am - 1:23 pmISP-SEA
8h 53m1 stop
$930Multiple Airlines
Find Deal
Wed, Feb 11 - Tue, Feb 17
Multiple Airlines Logo
8:20 am - 7:45 pmSEA-ISP
8h 25m1 stop
Multiple Airlines Logo
7:30 am - 1:26 pmISP-SEA
8h 56m1 stop
$969Multiple Airlines
Find Deal
Sun, Mar 22 - Fri, Mar 27
Multiple Airlines Logo
8:20 am - 7:45 pmSEA-ISP
8h 25m1 stop
Multiple Airlines Logo
7:30 am - 1:26 pmISP-SEA
8h 56m1 stop
$1,010Multiple Airlines
Find Deal
Thu, Mar 12 - Sun, Mar 22
Multiple Airlines Logo
7:55 am - 7:45 pmSEA-ISP
8h 50m1 stop
Multiple Airlines Logo
7:30 am - 1:23 pmISP-SEA
8h 53m1 stop
$1,098Multiple Airlines
Find Deal
Mon, Feb 9 - Fri, Feb 13

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Islip, New York that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated November 6, 2025.
Use the filters below to find and compare flights from Seattle to Islip, New York that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleIslip

SEA - ISP

SEAISP

Seattle/Tacoma Intl

Sat 3/7

10:50 pm-10:04 am

1 stop8h 14m

Islip Long Island

Sun 3/15

7:30 am-1:23 pm

1 stop8h 53m

$914

SeattleIslip

SEA - ISP

SEAISP

Seattle/Tacoma Intl

Wed 2/11

7:55 am-7:45 pm

1 stop8h 50m

Islip Long Island

Tue 2/17

7:30 am-1:23 pm

1 stop8h 53m

$930

SeattleIslip

SEA - ISP

SEAISP

Seattle/Tacoma Intl

Sun 3/22

8:20 am-7:45 pm

1 stop8h 25m

Islip Long Island

Fri 3/27

7:30 am-1:26 pm

1 stop8h 56m

$969

SeattleIslip

SEA - ISP

SEAISP

Seattle/Tacoma Intl

Thu 3/12

8:20 am-7:45 pm

1 stop8h 25m

Islip Long Island

Sun 3/22

7:30 am-1:26 pm

1 stop8h 56m

$1,010

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

$1,098

SeattleIslip

SEA - ISP

SEAISP

Seattle/Tacoma Intl

Tue 11/11

1:37 pm-6:56 pm

3 stops50h 19m

$325

SeattleIslip

SEA - ISP

SEAISP

Seattle/Tacoma Intl

Mon 12/8

11:10 pm-11:04 am

1 stop8h 54m

$448

SeattleIslip

SEA - ISP

SEAISP

Seattle/Tacoma Intl

Sat 12/6

9:00 am-7:45 pm

1 stop7h 45m

$458

SeattleIslip

SEA - ISP

SEAISP

Seattle/Tacoma Intl

Thu 2/19

8:20 am-7:45 pm

1 stop8h 25m

$482

SeattleIslip

SEA - ISP

SEAISP

Seattle/Tacoma Intl

Tue 12/9

9:00 am-7:45 pm

1 stop7h 45m

$483

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
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See travel insights to New York from

How to get the cheapest flight ticket from Seattle to Islip, New York

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 airline that flies from Seattle/Tacoma Intl to Islip Long Island?

Frontier is the most popular carrier operating from Seattle/Tacoma Intl to Islip Long Island

What airlines fly to Islip, New York?

Alaska Airlines, Delta and United Airlines are the top three most popular airlines that fly to Islip, New York from Seattle according to our data. Alaska Airlines is the first choice among our users, with 53% of people opting to fly with this airline when traveling to Islip, New York. Keep in mind that there are 10 different airlines that fly to Islip, New York on a routine basis, so you have a few additional options to choose from.

When to book flights from Seattle to Islip, New York

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

Cheap Seattle to Islip, New York (SEA to ISP) flight deals and tips

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

Direct flights

None
There are no direct flights from Seattle to Islip, New York. There are no popular flight routes from Seattle to Islip, New York.
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  • How far is Seattle/Tacoma Intl to Islip Long Island by plane?

    Islip Long Island is 2436.8 mi away from Seattle/Tacoma Intl. Typically, this will take 8h 14m by plane in normal conditions.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Islip Long Island Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Islip Long Island Airport were last updated today.

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Islip Long Island Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Seattle/Tacoma Intl Airport to Islip Long Island Airport.

  • What documentation or ID do you need to fly to Islip Long Island Airport?

    The necessary travel and health documents for your Islip Long Island Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Traveling to a place near New York?

Book flights to New York if you plan to visit one of these locations
Montauk
Riverhead
Sag Harbor
Southampton
Amagansett

Why use momondo?

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

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

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

Yes. momondo allows you to filter the results for Seattle to Islip flights to just show those with flexible booking policies.

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

Once you have performed a search for Seattle to Islip flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

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

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1 adult
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