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Cheap flights from Seattle to New York from $239

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 6/18. 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.
Southwest Logo
6:55 pm - 8:05 am
SEA
-
ISP
10h 10m
2 stops
Southwest Logo
4:40 pm - 11:30 pm
ISP
-
SEA
9h 50m
2 stops
$393Southwest
mar, giu 16 - mar, giu 23
Southwest Logo
7:30 pm - 8:05 am
SEA
-
ISP
9h 35m
2 stops
Southwest Logo
6:00 am - 1:20 pm
ISP
-
SEA
10h 20m
1 stop
$430Southwest
mar, giu 16 - mar, giu 23
Southwest Logo
9:25 pm - 8:05 am
SEA
-
ISP
7h 40m
1 stop
Southwest Logo
6:00 am - 1:20 pm
ISP
-
SEA
10h 20m
1 stop
$467Southwest
mar, giu 16 - mar, giu 23
Southwest Logo
11:05 pm - 2:50 pm
SEA
-
ISP
12h 45m
2 stops
Southwest Logo
12:30 pm - 6:30 pm
ISP
-
SEA
9h 00m
1 stop
$472Southwest
ven, giu 12 - lun, giu 15
Southwest Logo
10:45 pm - 11:35 am
SEA
-
ISP
9h 50m
2 stops
Southwest Logo
12:30 pm - 9:50 pm
ISP
-
SEA
12h 20m
2 stops
$477Southwest
ven, giu 12 - lun, giu 15
Southwest Logo
9:25 pm - 8:05 am
SEA
-
ISP
7h 40m
1 stop
Southwest Logo
3:05 pm - 12:25 am
ISP
-
SEA
12h 20m
2 stops
$559Southwest
lun, giu 15 - lun, giu 22
Southwest Logo
5:35 pm - 8:05 am
SEA
-
ISP
11h 30m
2 stops
Southwest Logo
3:05 pm - 12:25 am
ISP
-
SEA
12h 20m
2 stops
$564Southwest
lun, giu 15 - lun, giu 22
Southwest Logo
9:25 pm - 8:05 am
SEA
-
ISP
7h 40m
1 stop
Southwest Logo
12:30 pm - 6:30 pm
ISP
-
SEA
9h 00m
1 stop
$590Southwest
lun, giu 15 - lun, giu 22
Southwest Logo
11:55 pm - 1:50 pm
SEA
-
ISP
10h 55m
2 stops
Southwest Logo
12:30 pm - 11:35 pm
ISP
-
SEA
14h 05m
2 stops
$597Southwest
lun, apr 20 - mer, apr 22
Multiple Airlines Logo
10:15 pm - 6:44 pm
SEA
-
ISP
17h 29m
1 stop
Multiple Airlines Logo
4:07 pm - 7:23 pm
ISP
-
SEA
30h 16m
2 stops
$1,204Multiple Airlines
lun, apr 20 - ven, apr 24

Southwest flights from Seattle to Islip, New York

Our best Southwest deals on Seattle to Islip, New York flight tickets
Southwest
Jun 16
SEA6:55 pmSeattle/Tacoma Intl
10h 10m
2 stops
ISP8:05 amIslip Long Island
Jun 23
ISP4:40 pmIslip Long Island
9h 50m
2 stops
SEA11:30 pmSeattle/Tacoma Intl
$393
Southwest
Jun 16
SEA7:30 pmSeattle/Tacoma Intl
9h 35m
2 stops
ISP8:05 amIslip Long Island
Jun 23
ISP6:00 amIslip Long Island
10h 20m
1 stop
SEA1:20 pmSeattle/Tacoma Intl
$430
Southwest
Jun 16
SEA9:25 pmSeattle/Tacoma Intl
7h 40m
1 stop
ISP8:05 amIslip Long Island
Jun 23
ISP6:00 amIslip Long Island
10h 20m
1 stop
SEA1:20 pmSeattle/Tacoma Intl
$467

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 aprile 5, 2026.
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

Cheapest round-trip

SeattleIslip

SEA - ISP

SEAISP

Seattle/Tacoma Intl

mar 6/16

6:55 pm-8:05 am

2 stops10h 10m

Islip Long Island

mar 6/23

4:40 pm-11:30 pm

2 stops9h 50m

$393

SeattleIslip

SEA - ISP

SEAISP

Seattle/Tacoma Intl

mar 6/16

7:30 pm-8:05 am

2 stops9h 35m

Islip Long Island

mar 6/23

6:00 am-1:20 pm

1 stop10h 20m

$430

SeattleIslip

SEA - ISP

SEAISP

Seattle/Tacoma Intl

mar 6/16

9:25 pm-8:05 am

1 stop7h 40m

Islip Long Island

mar 6/23

6:00 am-1:20 pm

1 stop10h 20m

$467

SeattleIslip

SEA - ISP

SEAISP

Seattle/Tacoma Intl

ven 6/12

11:05 pm-2:50 pm

2 stops12h 45m

Islip Long Island

lun 6/15

12:30 pm-6:30 pm

1 stop9h 00m

$472

SeattleIslip

SEA - ISP

SEAISP

Seattle/Tacoma Intl

ven 6/12

10:45 pm-11:35 am

2 stops9h 50m

Islip Long Island

lun 6/15

12:30 pm-9:50 pm

2 stops12h 20m

$477

SeattleIslip

SEA - ISP

SEAISP

Seattle/Tacoma Intl

lun 6/15

9:25 pm-8:05 am

1 stop7h 40m

Islip Long Island

lun 6/22

3:05 pm-12:25 am

2 stops12h 20m

$559

SeattleIslip

SEA - ISP

SEAISP

Seattle/Tacoma Intl

lun 6/15

5:35 pm-8:05 am

2 stops11h 30m

Islip Long Island

lun 6/22

3:05 pm-12:25 am

2 stops12h 20m

$564
Quickest round-trip

SeattleIslip

SEA - ISP

SEAISP

Seattle/Tacoma Intl

lun 6/15

9:25 pm-8:05 am

1 stop7h 40m

Islip Long Island

lun 6/22

12:30 pm-6:30 pm

1 stop9h 00m

$590

SeattleIslip

SEA - ISP

SEAISP

Seattle/Tacoma Intl

lun 4/20

11:55 pm-1:50 pm

2 stops10h 55m

Islip Long Island

mer 4/22

12:30 pm-11:35 pm

2 stops14h 05m

$597

SeattleIslip

SEA - ISP

SEAISP

Seattle/Tacoma Intl

lun 4/20

10:15 pm-6:44 pm

1 stop17h 29m

Islip Long Island

ven 4/24

4:07 pm-7:23 pm

2 stops30h 16m

$1,204

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 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?

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

What airlines fly to Islip, New York?

Alaska Airlines, United Airlines and Delta 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 59% 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

Fastest flight time

7h 40m

Direct flights

None
The fastest flight from Seattle to Islip, New York takes 7h 40m
There are no direct flights from Seattle to Islip, New York. There are no popular flight routes from Seattle to Islip, New York.
Search flight deals

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

  • 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 7h 40m 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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