Cheap flights from Seattle to Islip (SEA - ISP)

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How to find the cheapest flight from
Seattle (SEA) to Islip (ISP)

All the information you need to plan the best SEA to ISP flight in 2022: compare Seattle to Islip flight prices with the expected peak season, weather and rainfall in Islip.
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 $328 per person but you can even find prices for as low as $187. The most expensive prices can be found in the month of June. Opting for a February flight can save you 45% on your journey compared to booking in June

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.

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 45% on the cost of your flight, compared to a flight in the morning.

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 49 days in advance, which can save you up to 31% on flights from Seattle to Islip, New York compared to booking the week you need them. Waiting 49 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 $364. For sooner than that we have options available in the next 3 days from $403.

Cheap flights from Seattle to Islip in June, July 2022

The best prices found for SEA to ISP flights for June, July
27 Jul - 5 Aug
$516pp
SEA
Seattle/Tacoma Intl
American Airlines
   
2 STOPS
ISP
Islip Long Island
ISP
Islip Long Island
American Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
20 Jul - 3 Aug
$539pp
SEA
Seattle/Tacoma Intl
American Airlines
 
1 STOP
ISP
Islip Long Island
ISP
Islip Long Island
American Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
8 Jul - 17 Jul
$545pp
SEA
Seattle/Tacoma Intl
American Airlines
 
1 STOP
ISP
Islip Long Island
ISP
Islip Long Island
American Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl

Seattle/Tacoma Intl to Islip 2022 flight deals

Cheap flights to Islip from Seattle found for this year
23 Aug - 29 Aug
$408pp
SEA
Seattle/Tacoma Intl
American Airlines
   
2 STOPS
ISP
Islip Long Island
ISP
Islip Long Island
American Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
24 Aug - 27 Aug
$415pp
SEA
Seattle/Tacoma Intl
American Airlines
   
2 STOPS
ISP
Islip Long Island
ISP
Islip Long Island
American Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
23 Aug - 29 Aug
$424pp
SEA
Seattle/Tacoma Intl
American Airlines
   
2 STOPS
ISP
Islip Long Island
ISP
Islip Long Island
American Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl

Last minute flights from Seattle to Islip

Late deals on round-trip flights to Islip from Seattle, departing today and this week
8 Jul - 17 Jul
$545pp
SEA
Seattle/Tacoma Intl
American Airlines
 
1 STOP
ISP
Islip Long Island
ISP
Islip Long Island
American Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
8 Jul - 17 Jul
$548pp
SEA
Seattle/Tacoma Intl
American Airlines
   
2 STOPS
ISP
Islip Long Island
ISP
Islip Long Island
American Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
8 Jul - 11 Jul
$552pp
SEA
Seattle/Tacoma Intl
American Airlines
 
1 STOP
ISP
Islip Long Island
ISP
Islip Long Island
American Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl

One-way flights to Long Island from Seattle

The cheapest one-way flights from Seattle to Islip
7:05 pm - 5:57 pm
American Airlines
1 Stop
19h 52m
SEA - ISP
American Airlines
7:05 pm - 5:57 pm
American Airlines
1 Stop
19h 52m
SEA - ISP
American Airlines
7:05 pm - 5:54 pm
American Airlines
1 Stop
19h 49m
SEA - ISP
American Airlines

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Seattle</span> to <span class="emphasized">Islip</span> flights.

Flight FAQs

From Seattle to Islip

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 $500 on Cheapflights?

Yes, there are multiple flights from Seattle to Islip, New York for under $500. The cheapest flight booked recently is on American Airlines for just $408, but on average you can expect to pay $481.

Are there last-minute flights available from Seattle to Islip, New York for under $600?

There are currently 16+ open flights from Seattle to Islip, New York within the next 7 days for less than $600.

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

Cheapflights users have booked flights from Seattle to Islip, New York round-trip from $408. This flight start at 24% lower than the current average price 3 months from now.

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

While on average a flight from Seattle to Islip, New York is generally $1,325, our data shows the cheapest flight currently is $302. When looking at the most popular route, (Seattle/Tacoma Intl - Islip Long Island), you can expect to pay $415 for that flight.

COVID Restrictions

View COVID Travel Restrictions for Islip, NY

Do I need a COVID test to fly to Islip from Seattle?

Information is based on travel restrictions for travel to Islip Long Island within the United States

Most visitors from Seattle/Tacoma Intl need to provide a negative COVID-19 test result and/or quarantine to enter Islip Long Island.

COVID-19 testing requirements
Visitors from Seattle/Tacoma Intl are not required to present a negative COVID-19 PCR test or antigen result upon entering Islip Long Island.

Quarantine requirements
Visitors from Seattle/Tacoma Intl are not required to quarantine after entering Islip Long Island.

Do I need a test to fly back to Seattle from Islip?

Returning to Seattle/Tacoma Intl from Islip Long Island

COVID-19 testing requirements
Visitors from Islip Long Island are not required to present a negative COVID-19 PCR test or antigen result upon entering Seattle/Tacoma Intl.

Quarantine requirements
Visitors from Islip Long Island are not required to quarantine after entering Seattle/Tacoma Intl.

Hide COVID Travel Restrictions for Islip, NY

Alternative routes for Seattle to Islip

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

Destination information for Islip

Things to know before you go - useful duration and weather info for your trip from Seattle to Islip.
Average temperature for June in Islip
80.6 °F
Avg rainfall for June in Islip
3.9 ″

Airports servicing Seattle

Airports servicing Islip

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