Cheap flights from Seattle to Islip (SEA - ISP)

SEA — ISP
Feb 1 — Feb 81

What is the cheapest day to fly round-trip from Seattle to Islip, New York?

It’s generally more expensive to depart on a Tuesday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

How far in advance should I book a flight from Seattle to Islip, New York?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 36 days in advance, which can save you up to 35% on flights from Seattle to Islip, New York compared to booking the week you need them. Waiting 36 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 $448. For sooner than that we have options available in the next 3 days from $517.

What is the cheapest month to fly from Seattle to Islip, New York?

February is one of the best times of the year to fly to Islip, New York from Seattle. Prices for February average $400 per person but you can even find prices for as low as $188. The most expensive prices can be found in the month of June. Opting for a February flight can save you 51% on your journey compared to booking in June

When is the cheapest time to fly from Seattle to Islip, New York (SEA - ISP)?

It’s optimal to fly from Seattle to Islip, New York at noon. By choosing this option you can save up to 33% on the cost of your flight, compared to a flight in the morning.

Seattle to Islip 2023 flight deals

Cheap flights to Islip from Seattle found for this year
Jun 15 - Jun 24
SEA

Seattle/Tacoma Intl

ISP

Islip Long Island

1 stop

9h 50m
ISP

Islip Long Island

SEA

Seattle/Tacoma Intl

2 stops

18h 57m
$681

Multiple Airlines

Pick Dates

Deal found 1/25

Jun 18 - Jun 24
SEA

Seattle/Tacoma Intl

ISP

Islip Long Island

1 stop

9h 50m
ISP

Islip Long Island

SEA

Seattle/Tacoma Intl

1 stop

18h 42m
$721

Multiple Airlines

Pick Dates

Deal found 1/25

Jun 18 - Jun 24
SEA

Seattle/Tacoma Intl

ISP

Islip Long Island

1 stop

9h 50m
ISP

Islip Long Island

SEA

Seattle/Tacoma Intl

2 stops

14h 29m
$754

Multiple Airlines

Pick Dates

Deal found 1/25

Related info for your journey

Useful info, stats and facts about Seattle to Islip flights.

Which airlines flying from Seattle/Tacoma Intl to Islip Long Island have flexible changes due to COVID-19?

Some of our airline partners flying from Seattle/Tacoma Intl to Islip Long Island have new flexible policies in place due to COVID-19. American Airlines is one of the carriers where you may find flexible change policies. You can use our site to filter for airlines like American Airlines with this kind of flexibility.

Can I find flights from Seattle to Islip, New York for under $700 on Cheapflights?

Yes, there are multiple flights from Seattle to Islip, New York for under $700. The cheapest flight booked recently is on Multiple Airlines for just $681, but on average you can expect to pay $761.

What are the cheapest flights from Seattle to Islip, New York?

While on average a flight from Seattle to Islip, New York is generally $1,269, our data shows the cheapest flight currently is $276. When looking at the most popular route, (Seattle/Tacoma Intl - Islip Long Island), you can expect to pay $681 for that flight.

Alternative routes for Seattle to Islip

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Seattle to Islip

The chart below displays the airlines Cheapflights users traveling from Seattle to Islip choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
American AirlinesCheapest$385Average$546FlexibilityNo cancel feeOn-time71%COVID-19 safety
Search American Airlines flights
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