Flights from Seattle to Islip

Cheapest flights from Seattle

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Aug 29 - Wed, Sep 3

SEA

Seattle - Tacoma Intl.

JFK

John F. Kennedy Intl.

$297 Roundtrip, found 8 hours ago

$297

Roundtrip

found 8 hours ago

Select JetBlue Airways flight, departing Fri, Aug 29 from Seattle - Tacoma Intl. to John F. Kennedy Intl., returning Wed, Sep 3, priced at $297 found 8 hours ago

Tue, Aug 26 - Tue, Sep 2

SEA

Seattle - Tacoma Intl.

JFK

John F. Kennedy Intl.

$306 Roundtrip, found 8 hours ago

$306

Roundtrip

found 8 hours ago

Select JetBlue Airways flight, departing Tue, Aug 26 from Seattle - Tacoma Intl. to John F. Kennedy Intl., returning Tue, Sep 2, priced at $306 found 8 hours ago

Fri, Aug 29 - Thu, Sep 4

SEA

Seattle - Tacoma Intl.

JFK

John F. Kennedy Intl.

$307 Roundtrip, found 8 hours ago

$307

Roundtrip

found 8 hours ago

Select JetBlue Airways flight, departing Fri, Aug 29 from Seattle - Tacoma Intl. to John F. Kennedy Intl., returning Thu, Sep 4, priced at $307 found 8 hours ago

Tue, Aug 26 - Tue, Sep 2

SEA

Seattle - Tacoma Intl.

JFK

John F. Kennedy Intl.

$312 Roundtrip, found 8 hours ago

$312

Roundtrip

found 8 hours ago

Select American Airlines flight, departing Tue, Aug 26 from Seattle - Tacoma Intl. to John F. Kennedy Intl., returning Tue, Sep 2, priced at $312 found 8 hours ago

Fri, Aug 29 - Tue, Sep 2

SEA

Seattle - Tacoma Intl.

JFK

John F. Kennedy Intl.

$312 Roundtrip, found 8 hours ago

$312

Roundtrip

found 8 hours ago

Select JetBlue Airways flight, departing Fri, Aug 29 from Seattle - Tacoma Intl. to John F. Kennedy Intl., returning Tue, Sep 2, priced at $312 found 8 hours ago

Tue, Aug 26 - Thu, Sep 4

SEA

Seattle - Tacoma Intl.

JFK

John F. Kennedy Intl.

$316 Roundtrip, found 8 hours ago

$316

Roundtrip

found 8 hours ago

Select JetBlue Airways flight, departing Tue, Aug 26 from Seattle - Tacoma Intl. to John F. Kennedy Intl., returning Thu, Sep 4, priced at $316 found 8 hours ago

Fri, Aug 15 - Wed, Aug 20

SEA

Seattle - Tacoma Intl.

JFK

John F. Kennedy Intl.

$317 Roundtrip, found 2 days ago

$317

Roundtrip

found 2 days ago

Select Hawaiian Airlines flight, departing Fri, Aug 15 from Seattle - Tacoma Intl. to John F. Kennedy Intl., returning Wed, Aug 20, priced at $317 found 2 days ago

Tue, Aug 26 - Tue, Sep 2

SEA

Seattle - Tacoma Intl.

JFK

John F. Kennedy Intl.

$321 Roundtrip, found 8 hours ago

$321

Roundtrip

found 8 hours ago

Select JetBlue Airways flight, departing Tue, Aug 26 from Seattle - Tacoma Intl. to John F. Kennedy Intl., returning Tue, Sep 2, priced at $321 found 8 hours ago

Tue, Aug 19 - Wed, Aug 20

SEA

Seattle - Tacoma Intl.

JFK

John F. Kennedy Intl.

$332 Roundtrip, found 2 days ago

$332

Roundtrip

found 2 days ago

Select Hawaiian Airlines flight, departing Tue, Aug 19 from Seattle - Tacoma Intl. to John F. Kennedy Intl., returning Wed, Aug 20, priced at $332 found 2 days ago

Mon, Jul 28 - Mon, Aug 4

SEA

Seattle - Tacoma Intl.

JFK

John F. Kennedy Intl.

$336 Roundtrip, found 15 hours ago

$336

Roundtrip

found 15 hours ago

Select Frontier Airlines flight, departing Mon, Jul 28 from Seattle - Tacoma Intl. to John F. Kennedy Intl., returning Mon, Aug 4, priced at $336 found 15 hours ago

Mon, Aug 18 - Sat, Aug 23

SEA

Seattle - Tacoma Intl.

JFK

John F. Kennedy Intl.

$337 Roundtrip, found 2 days ago

$337

Roundtrip

found 2 days ago

Select American Airlines flight, departing Mon, Aug 18 from Seattle - Tacoma Intl. to John F. Kennedy Intl., returning Sat, Aug 23, priced at $337 found 2 days ago

Fri, Aug 29 - Fri, Sep 5

SEA

Seattle - Tacoma Intl.

JFK

John F. Kennedy Intl.

$337 Roundtrip, found 8 hours ago

$337

Roundtrip

found 8 hours ago

Select JetBlue Airways flight, departing Fri, Aug 29 from Seattle - Tacoma Intl. to John F. Kennedy Intl., returning Fri, Sep 5, priced at $337 found 8 hours ago

Mon, Jul 28 - Sun, Aug 10

SEA

Seattle - Tacoma Intl.

JFK

John F. Kennedy Intl.

$341 Roundtrip, found 15 hours ago

$341

Roundtrip

found 15 hours ago

Select Frontier Airlines flight, departing Mon, Jul 28 from Seattle - Tacoma Intl. to John F. Kennedy Intl., returning Sun, Aug 10, priced at $341 found 15 hours ago

Tue, Aug 26 - Tue, Sep 2

SEA

Seattle - Tacoma Intl.

JFK

John F. Kennedy Intl.

$346 Roundtrip, found 8 hours ago

$346

Roundtrip

found 8 hours ago

Select JetBlue Airways flight, departing Tue, Aug 26 from Seattle - Tacoma Intl. to John F. Kennedy Intl., returning Tue, Sep 2, priced at $346 found 8 hours ago

Tue, Aug 26 - Tue, Sep 2

SEA

Seattle - Tacoma Intl.

JFK

John F. Kennedy Intl.

$347 Roundtrip, found 8 hours ago

$347

Roundtrip

found 8 hours ago

Select Alaska Airlines flight, departing Tue, Aug 26 from Seattle - Tacoma Intl. to John F. Kennedy Intl., returning Tue, Sep 2, priced at $347 found 8 hours ago

Fri, Aug 15 - Mon, Aug 25

SEA

Seattle - Tacoma Intl.

JFK

John F. Kennedy Intl.

$356 Roundtrip, found 2 days ago

$356

Roundtrip

found 2 days ago

Select Hawaiian Airlines flight, departing Fri, Aug 15 from Seattle - Tacoma Intl. to John F. Kennedy Intl., returning Mon, Aug 25, priced at $356 found 2 days ago

Tue, Aug 26 - Tue, Sep 2

SEA

Seattle - Tacoma Intl.

JFK

John F. Kennedy Intl.

$362 Roundtrip, found 8 hours ago

$362

Roundtrip

found 8 hours ago

Select American Airlines flight, departing Tue, Aug 26 from Seattle - Tacoma Intl. to John F. Kennedy Intl., returning Tue, Sep 2, priced at $362 found 8 hours ago

Fri, Aug 29 - Mon, Sep 1

SEA

Seattle - Tacoma Intl.

JFK

John F. Kennedy Intl.

$366 Roundtrip, found 8 hours ago

$366

Roundtrip

found 8 hours ago

Select JetBlue Airways flight, departing Fri, Aug 29 from Seattle - Tacoma Intl. to John F. Kennedy Intl., returning Mon, Sep 1, priced at $366 found 8 hours ago

Tue, Aug 26 - Tue, Sep 2

SEA

Seattle - Tacoma Intl.

JFK

John F. Kennedy Intl.

$382 Roundtrip, found 8 hours ago

$382

Roundtrip

found 8 hours ago

Select Delta flight, departing Tue, Aug 26 from Seattle - Tacoma Intl. to John F. Kennedy Intl., returning Tue, Sep 2, priced at $382 found 8 hours ago

Mon, Jul 28 - Fri, Aug 8

PAE

Seattle Paine Field Intl. Airport

JFK

John F. Kennedy Intl.

$386 Roundtrip, found 15 hours ago

$386

Roundtrip

found 15 hours ago

Select Frontier Airlines flight, departing Mon, Jul 28 from Seattle Paine Field Intl. Airport to John F. Kennedy Intl., returning Fri, Aug 8, priced at $386 found 15 hours ago