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Cheap flights from Washington to New York from $482

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to New York departing on 6/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
7:30 pm - 8:20 am
SEA
-
ISP
9h 50m
2 stops
Southwest Logo
6:00 am - 1:20 pm
ISP
-
SEA
10h 20m
1 stop
$482Southwest
Wed, Jun 17 - Tue, Jun 23
Southwest Logo
7:30 pm - 8:20 am
SEA
-
ISP
9h 50m
2 stops
Southwest Logo
4:40 pm - 11:30 pm
ISP
-
SEA
9h 50m
2 stops
$487Southwest
Wed, Jun 17 - Tue, Jun 23
Southwest Logo
9:25 pm - 8:20 am
SEA
-
ISP
7h 55m
1 stop
Southwest Logo
6:00 am - 1:20 pm
ISP
-
SEA
10h 20m
1 stop
$499Southwest
Wed, Jun 17 - Tue, Jun 23
Southwest Logo
8:30 am - 11:20 pm
SEA
-
ISP
11h 50m
2 stops
Southwest Logo
9:20 am - 11:00 pm
ISP
-
SEA
16h 40m
2 stops
$553Southwest
Sat, May 16 - Sat, May 23
Southwest Logo
8:55 am - 10:55 pm
PDX
-
ISP
11h 00m
2 stops
Southwest Logo
12:30 pm - 10:40 pm
ISP
-
PDX
13h 10m
2 stops
$597Southwest
Sun, Apr 5 - Thu, Apr 9
Southwest Logo
5:10 am - 8:25 pm
PDX
-
ISP
12h 15m
2 stops
Southwest Logo
5:25 pm - 12:05 am
ISP
-
PDX
9h 40m
2 stops
$630Southwest
Fri, Apr 10 - Sun, Apr 12
Southwest Logo
11:55 pm - 4:30 pm
SEA
-
ISP
13h 35m
2 stops
Southwest Logo
4:30 pm - 12:55 am
ISP
-
SEA
11h 25m
2 stops
$657Southwest
Thu, Apr 9 - Mon, Apr 13
Southwest Logo
11:55 pm - 5:05 pm
SEA
-
ISP
14h 10m
2 stops
Southwest Logo
4:10 pm - 12:10 am
ISP
-
SEA
11h 00m
2 stops
$693Southwest
Sat, Apr 4 - Wed, Apr 8
Multiple Airlines Logo
7:00 am - 6:44 pm
PDX
-
ISP
8h 44m
1 stop
Multiple Airlines Logo
9:59 am - 7:48 pm
ISP
-
PDX
12h 49m
1 stop
$1,234Multiple Airlines
Sun, Apr 5 - Thu, Apr 9
Multiple Airlines Logo
10:15 pm - 6:44 pm
SEA
-
ISP
17h 29m
1 stop
Multiple Airlines Logo
5:28 pm - 7:25 pm
ISP
-
SEA
28h 57m
2 stops
$1,239Multiple Airlines
Sat, Apr 4 - Wed, Apr 8

Southwest flights from State of Washington to Islip, New York

Our best Southwest deals on State of Washington to Islip, New York flight tickets
Southwest
Jun 17
SEA7:30 pmSeattle/Tacoma Intl
9h 50m
2 stops
ISP8:20 amIslip Long Island
Jun 23
ISP6:00 amIslip Long Island
10h 20m
1 stop
SEA1:20 pmSeattle/Tacoma Intl
$482
Southwest
Jun 17
SEA7:30 pmSeattle/Tacoma Intl
9h 50m
2 stops
ISP8:20 amIslip Long Island
Jun 23
ISP4:40 pmIslip Long Island
9h 50m
2 stops
SEA11:30 pmSeattle/Tacoma Intl
$487
Southwest
Jun 17
SEA9:25 pmSeattle/Tacoma Intl
7h 55m
1 stop
ISP8:20 amIslip Long Island
Jun 23
ISP6:00 amIslip Long Island
10h 20m
1 stop
SEA1:20 pmSeattle/Tacoma Intl
$499

momondo Fare Finder

 
Customize your flight search to find flights from State of Washington 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 March 26, 2026.
Use the filters below to find and compare flights from Washington 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

Wed 6/17

7:30 pm-8:20 am

2 stops9h 50m

Islip Long Island

Tue 6/23

6:00 am-1:20 pm

1 stop10h 20m

$482

SeattleIslip

SEA - ISP

SEAISP

Seattle/Tacoma Intl

Wed 6/17

7:30 pm-8:20 am

2 stops9h 50m

Islip Long Island

Tue 6/23

4:40 pm-11:30 pm

2 stops9h 50m

$487
Quickest round-trip

SeattleIslip

SEA - ISP

SEAISP

Seattle/Tacoma Intl

Wed 6/17

9:25 pm-8:20 am

1 stop7h 55m

Islip Long Island

Tue 6/23

6:00 am-1:20 pm

1 stop10h 20m

$499

SeattleIslip

SEA - ISP

SEAISP

Seattle/Tacoma Intl

Sat 5/16

8:30 am-11:20 pm

2 stops11h 50m

Islip Long Island

Sat 5/23

9:20 am-11:00 pm

2 stops16h 40m

$553

PortlandIslip

PDX - ISP

PDXISP

Portland

Sun 4/5

8:55 am-10:55 pm

2 stops11h 00m

Islip Long Island

Thu 4/9

12:30 pm-10:40 pm

2 stops13h 10m

$597

PortlandIslip

PDX - ISP

PDXISP

Portland

Fri 4/10

5:10 am-8:25 pm

2 stops12h 15m

Islip Long Island

Sun 4/12

5:25 pm-12:05 am

2 stops9h 40m

$630

SeattleIslip

SEA - ISP

SEAISP

Seattle/Tacoma Intl

Thu 4/9

11:55 pm-4:30 pm

2 stops13h 35m

Islip Long Island

Mon 4/13

4:30 pm-12:55 am

2 stops11h 25m

$657

SeattleIslip

SEA - ISP

SEAISP

Seattle/Tacoma Intl

Sat 4/4

11:55 pm-5:05 pm

2 stops14h 10m

Islip Long Island

Wed 4/8

4:10 pm-12:10 am

2 stops11h 00m

$693

PortlandIslip

PDX - ISP

PDXISP

Portland

Sun 4/5

7:00 am-6:44 pm

1 stop8h 44m

Islip Long Island

Thu 4/9

9:59 am-7:48 pm

1 stop12h 49m

$1,234

SeattleIslip

SEA - ISP

SEAISP

Seattle/Tacoma Intl

Sat 4/4

10:15 pm-6:44 pm

1 stop17h 29m

Islip Long Island

Wed 4/8

5:28 pm-7:25 pm

2 stops28h 57m

$1,239

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 11 resultsSorted by cheapest first
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See travel insights to New York from

How to get the cheapest flight ticket from State of Washington 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 Washington to Islip Long Island?

Frontier is the most popular carrier operating from Washington 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 State of Washington according to our data. Alaska Airlines is the first choice among our users, with 57% 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.

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

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

Fastest flight time

12h 15m

Direct flights

None
The fastest flight from State of Washington to Islip, New York takes 12h 15m
There are no direct flights from State of Washington to Islip, New York. There are no popular flight routes from State of Washington to Islip, New York.
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  • When did momondo last update prices for flights from Washington to Islip Long Island Airport?

    Prices for flights from Washington to Islip Long Island Airport are updated daily.

  • How many operators does momondo search for flights from Washington to Islip Long Island Airport?

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington to Islip Long Island Airport.

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

    The travel and health documents you'll need for your trip to Islip Long Island Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Islip Long Island Airport. It is always advisable to seek 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 Washington to Islip?

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

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

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

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

momondo helps you find the best flight between Washington and Islip by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are simply researching potential flights to Islip, momondo offers a useful price alert feature which will track prices for flights to Islip from Washington and alert you when they change.

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