Cheap flights from Seattle, WA to Islip, NY
Flights starting at $139. Choose between Frontier Airlines, Alaska Airlines, or Spirit Airlines to find the best price.
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Tips to know when travelling to Islip
Cheapest one-way trip | $139 |
---|---|
Cheapest round-trip | $313 |
Average round-trip | $378 |
Includes rare itinerary | |
Most popular airline | Frontier Airlines |
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Travelers usually depart from Seattle–Tacoma International, or Kenmore Air Harbor Seaplane Base when they travel from Seattle to Islip. The most popular airlines for this route are Frontier Airlines, Alaska Airlines, Spirit Airlines, Sun Country Airlines, and Allegiant Air. Seattle and Islip have 152 direct flights per week. When you arrive at Islip, consider visiting Staten Island, Metropolitan Museum of Art, Statue of Liberty, Times Square, Empire State Building, and Manhattan Island.
Check-in for a flight from Seattle to Islip
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 |
Sun Country Airlines | SCX | SY | Yes | No |
Allegiant Air | AAY | G4 | No | Opens 24 days before flight Closes 1 hours before flight |
Weather in Islip
Average Weather
Month | Average monthly max temperature | Average monthly min temperature |
January | 3°C | -1°C |
February | 4°C | 0°C |
March | 7°C | 2°C |
April | 12°C | 7°C |
May | 17°C | 12°C |
June | 22°C | 17°C |
July | 26°C | 21°C |
August | 26°C | 21°C |
September | 22°C | 18°C |
October | 17°C | 13°C |
November | 11°C | 6°C |
December | 7°C | 2°C |
14 day forecast
Frequently asked questions
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