Cheap flights from Islip, NY to Seattle, WA
Choose between Frontier Airlines, Alaska Airlines, or Spirit Airlines to find the best price
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Tips to know when travelling to Seattle
Most popular airline | Frontier Airlines |
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Book your trip to arrive at Seattle–Tacoma International, or Kenmore Air Harbor Seaplane Base. The most popular airlines for this route are Frontier Airlines, Alaska Airlines, Spirit Airlines, Harbour Air (Priv), and Flair Airlines. Islip and Seattle have 200 direct flights per week.
Check-in for a flight from Islip to Seattle
Name | Carrier code | IATA Code | Passport needed during booking | Online check-in available |
---|---|---|---|---|
Frontier Airlines | FFT | F9 | No | Opens 24 days before flight Closes 1 hours before flight |
Alaska Airlines | ASA | AS | No | Opens 24 days before flight Closes 1 hours before flight |
Spirit Airlines | NKS | NK | No | Opens 24 days before flight Closes 1 hours before flight |
Harbour Air (Priv) | HES | YB | No | No |
Flair Airlines | FLE | F8 | Yes | Opens 24 days before flight Closes 1 hours before flight |
Weather in Seattle
Average Weather
Month | Average monthly max temperature | Average monthly min temperature |
January | 7°C | 2°C |
February | 8°C | 1°C |
March | 10°C | 3°C |
April | 13°C | 4°C |
May | 18°C | 8°C |
June | 21°C | 10°C |
July | 25°C | 13°C |
August | 26°C | 14°C |
September | 22°C | 11°C |
October | 15°C | 7°C |
November | 10°C | 4°C |
December | 6°C | 1°C |
14 day forecast
Frequently asked questions
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