To save on the cost of your flight from Islip, New York to Seattle, book at least 58 days before your planned departure. Booking around this time can save you about 47% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $358 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $551.
January can be a great time to fly to Seattle from Islip, New York with a flight ticket averaging about $367. Cheapflights users have found deals in the month of January for as cheap as $133. The most expensive prices can be found in the month of August.
When flying from Islip, New York to Seattle, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Fly from
Fly to
Budget
$543 - $617
Route
Depart
Return
Price
Islip Long IslandSeattle/Tacoma Intl
ISP - SEA
ISPSEA
Islip Long Island
Thu 7/11
2 stops11h 48m
Seattle/Tacoma Intl
Thu 7/18
2 stops19h 32m
Islip Long IslandSeattle/Tacoma Intl
ISP - SEA
ISPSEA
Islip Long Island
Mon 7/15
2 stops16h 00m
Seattle/Tacoma Intl
Sun 7/21
3 stops26h 38m
Islip Long IslandSeattle/Tacoma Intl
ISP - SEA
ISPSEA
Islip Long Island
Mon 7/15
2 stops16h 00m
Seattle/Tacoma Intl
Sun 7/21
2 stops19h 22m
Islip Long IslandSeattle/Tacoma Intl
ISP - SEA
ISPSEA
Islip Long Island
Thu 7/11
3 stops33h 25m
Seattle/Tacoma Intl
Thu 7/18
2 stops19h 32m
Islip Long IslandSeattle/Tacoma Intl
ISP - SEA
ISPSEA
Islip Long Island
Thu 7/11
3 stops33h 25m
Seattle/Tacoma Intl
Thu 7/18
3 stops32h 57m
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