sea-to-isp

 

The cheapest times to fly from SEA to ISP are

  • January 1st to March 11th
  • April 16th to June 10th (except the weeks of May 14th and May 21st)
  • September 17th to November 18th (except the week of October 1st)

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from SEA to ISP is late January and early February. Prices can be as high as $1195 for Sunday flights during mid December, or as low as $286 for Tuesday flights around late January and early February.

 

When to Fly to Islip

Flying from Seattle, WA (SEA) to Islip, NY (ISP) will usually cost between $288 to $783 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late January and early February with an average ticket price of $287. Due to high demand the most expensive time to fly is mid December, with an average price of $747. Planning your trip to low-cost times can easily save you $461 on economy flights and even more on first-class flights. Generally, any price below $415 can be considered a good price for a round-trip SEA to ISP flight.

See below for a graph of average weekly prices for the SEA to ISP route. All prices are for round-trip tickets in USD.

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SEA to ISP Flight Prices

Compared to other flights, the SEA to ISP flight is much cheaper than the average and costs much less than the average flight leaving from Seattle. The average price per mile (for a direct flight) is $0.11, which is far below average.

 

Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Sundays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $271 (43%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $354. Return trip prices are from the ISP to SEA flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

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Departure Day Prices

Return Trip Prices by Day

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Return Day Prices

 

Nonstop Flights and Layovers

Travelers looking to fly from SEA to ISP can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 5 hour 23 minutes may not be realistic.

 

Alternative Nearby Airports

Champion Traveler tells you which airports are nearby and whether tickets might be cheaper alternative airports nearby. Sometimes it’s worth it to fly into a closer airport and then commute to your destination. Remember that there is not usually a nonstop flight from SEA to ISP while comparing.

Destination alternative #1: John F. Kennedy International Airport (JFK) in New York, NY

  • 37 miles (60 km) away from ISP
  • Usually 26.75% less expensive than ISP
  • Nonstop flights available

See SEA to JFK flights

Destination alternative #2: LaGuardia Airport (LGA) in New York, NY

  • 40 miles (64 km) away from ISP
  • Usually 21.20% less expensive than ISP
  • 1-layover flights available

See SEA to LGA flights

Destination alternative #3: Newark Liberty International Airport (EWR) in Newark, NJ

  • 56 miles (90 km) away from ISP
  • Usually 15.30% less expensive than ISP
  • Nonstop flights available

See SEA to EWR flights

Destination alternative #4: Bradley International Airport (BDL) in Hartford, CT

  • 82 miles (132 km) away from ISP
  • Usually 12.05% less expensive than ISP
  • 1-layover flights available

See SEA to BDL flights

Destination alternative #5: Theodore Francis Green State Airport (PVD) in Providence, RI

  • 108 miles (174 km) away from ISP
  • Usually 11.57% less expensive than ISP
  • 1-layover flights available

See SEA to PVD flights

Destination alternative #6: Philadelphia International Airport (PHL) in Philadelphia, PA

  • 130 miles (209 km) away from ISP
  • Usually 8.31% less expensive than ISP
  • Nonstop flights available

See SEA to PHL flights

 

Flight Questions Answered

Still have questions about flying from SEA to ISP? We’ve got answers.

Which airlines fly this route?

You can find 4 major airlines flying this route most often: Alaska, American, Frontier, Southwest, and potentially more during busy seasons.

How far away is it from Long Island MacArthur Airport to Seattle/Tacoma International Airport?

The distance between the two airports is roughly 2441 miles or 3928 kilometers.

How long does it take to fly from SEA to ISP?

The real-world flight time for a nonstop SEA to ISP flight is about 5 hour 23 minutes.

How many flights go between Seattle, WA and Islip, NY?

It depends on the day of the week and the date, but a typical day might have around 69 available flights from SEA to ISP.

 

Airport Location Info

 

Departing Airport

Origination code SEA
Origination airport name Seattle/Tacoma International Airport
City Seattle, WA
Country the United States
Latitude 47.5
Longitude -122.3

Return Airport

Destination code ISP
Destination airport name Long Island MacArthur Airport
City Islip, NY
Country the United States
Latitude 40.8
Longitude -73.1

 

Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.