When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 46 days in advance, which can save you up to 40% on flights from Seattle to Islip, New York compared to booking the week you need them. Waiting 46 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $352. For sooner than that we have options available in the next 3 days from $538.
January is one of the best times of the year to fly to Islip, New York from Seattle. Prices for January average $350 per person but you can even find prices for as low as $143. The most expensive prices can be found in the month of July. Opting for a January flight can save you 25% on your journey compared to booking in July
When flying from Seattle to Islip, New York, 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
$518 - $557
Route
Depart
Return
Price
Seattle/Tacoma IntlIslip Long Island
SEA - ISP
SEAISP
Seattle/Tacoma Intl
Thu 7/11
2 stops19h 45m
Islip Long Island
Mon 7/15
2 stops16h 00m
Seattle/Tacoma IntlIslip Long Island
SEA - ISP
SEAISP
Seattle/Tacoma Intl
Thu 7/11
3 stops32h 57m
Islip Long Island
Mon 7/15
2 stops16h 00m
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