To save on the cost of your flight from Islip, New York to Seattle, book at least 32 days before your planned departure. Booking around this time can save you about 40% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $340 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $592.
January can be a great time to fly to Seattle from Islip, New York with a flight ticket averaging about $361. Cheapflights users have found deals in the month of January for as cheap as $99. The most expensive prices can be found in the month of July.
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.
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