ISP - SEA

$409 Find Cheap Flights from Islip to Seattle - Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$409
Typical prices: $965-$965
Southwest
Sat 1/6Sat 1/13
ISP - SEA • 2 stops
Nonstop flights
There are currently no direct flights between Islip and Seattle. You'll need to take a connecting flight to reach the destination.
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Cheap Flights from Islip to Seattle (ISP-SEA)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Islip to Seattle

Wed, Jan 6 - Wed, Jan 13
Southwest Logo
12:30 pm - 9:35 pmISP  Islip Long Island-SEA Seattle/Tacoma Intl
12h 05m2 stops Baltimore/Washington Phoenix Sky Harbor Intl
Southwest Logo
7:00 am - 9:30 pmSEA  Seattle/Tacoma Intl-ISP Islip Long Island
11h 30m2 stops San Diego Baltimore/Washington
$409Southwest
Fri, Jan 1 - Tue, Jan 5
Southwest Logo
12:30 pm - 10:50 pmISP  Islip Long Island-SEA Seattle/Tacoma Intl
13h 20m2 stops Baltimore/Washington Denver Intl
Southwest Logo
7:00 am - 9:45 pmSEA  Seattle/Tacoma Intl-ISP Islip Long Island
11h 45m2 stops San Diego Baltimore/Washington
$468Southwest
Fri, Jan 1 - Mon, Jan 4
Southwest Logo
12:30 pm - 10:50 pmISP  Islip Long Island-SEA Seattle/Tacoma Intl
13h 20m2 stops Baltimore/Washington Denver Intl
Southwest Logo
12:15 am - 4:15 pmSEA  Seattle/Tacoma Intl-ISP Islip Long Island
13h 00m2 stops Chicago Midway Baltimore/Washington
$482Southwest
Fri, Jan 1 - Tue, Jan 5
Southwest Logo
12:30 pm - 10:50 pmISP  Islip Long Island-SEA Seattle/Tacoma Intl
13h 20m2 stops Baltimore/Washington Denver Intl
Southwest Logo
7:00 am - 9:45 pmSEA  Seattle/Tacoma Intl-ISP Islip Long Island
11h 45m2 stops San Diego Baltimore/Washington
$493Southwest
Wed, Feb 10 - Mon, Feb 15
Southwest Logo
12:30 pm - 10:40 pmISP  Islip Long Island-SEA Seattle/Tacoma Intl
13h 10m2 stops Baltimore/Washington Chicago Midway
Southwest Logo
6:15 am - 11:40 pmSEA  Seattle/Tacoma Intl-ISP Islip Long Island
14h 25m2 stops Chicago Midway Baltimore/Washington
$520Southwest
Fri, Jan 1 - Mon, Jan 4
Southwest Logo
12:30 pm - 11:35 pmISP  Islip Long Island-SEA Seattle/Tacoma Intl
14h 05m2 stops Baltimore/Washington Chicago Midway
Southwest Logo
12:15 am - 4:15 pmSEA  Seattle/Tacoma Intl-ISP Islip Long Island
13h 00m2 stops Chicago Midway Baltimore/Washington
$525Southwest
Wed, Dec 30 - Mon, Jan 4
Southwest Logo
4:55 pm - 1:45 amISP  Islip Long Island-SEA Seattle/Tacoma Intl
11h 50m2 stops Baltimore/Washington Las Vegas Harry Reid Intl
Southwest Logo
12:15 am - 4:15 pmSEA  Seattle/Tacoma Intl-ISP Islip Long Island
13h 00m2 stops Chicago Midway Baltimore/Washington
$588Southwest
Mon, Nov 23 - Mon, Nov 30
Southwest Logo
12:25 pm - 12:35 amISP  Islip Long Island-SEA Seattle/Tacoma Intl
15h 10m2 stops Baltimore/Washington Chicago Midway
Southwest Logo
7:15 am - 11:50 pmSEA  Seattle/Tacoma Intl-ISP Islip Long Island
13h 35m2 stops San Diego Baltimore/Washington
$606Southwest
Tue, Nov 10 - Fri, Nov 13
Southwest Logo
12:30 pm - 10:50 pmISP  Islip Long Island-SEA Seattle/Tacoma Intl
13h 20m2 stops Baltimore/Washington Denver Intl
Southwest Logo
12:15 am - 2:55 pmSEA  Seattle/Tacoma Intl-ISP Islip Long Island
11h 40m2 stops Chicago Midway Baltimore/Washington
$647Southwest
Wed, Nov 11 - Sun, Nov 15
Southwest Logo
12:30 pm - 10:50 pmISP  Islip Long Island-SEA Seattle/Tacoma Intl
13h 20m2 stops Baltimore/Washington Denver Intl
Southwest Logo
6:30 am - 11:35 pmSEA  Seattle/Tacoma Intl-ISP Islip Long Island
14h 05m2 stops San Jose Baltimore/Washington
$680Southwest
Booking Insights

Price, demand and travel trends for Islip to Seattle flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from Islip to Seattle?

Round-trip flights from Islip to Seattle typically range from $965 to $965. The lowest price found in the past 5 days was $409, on Southwest.

Key details for Islip to Seattle flights

Cheapest flight

$409
Round-trip flight from Islip to Seattle

When to book flights from Islip to Seattle

Are your dates flexible? Find out the best times to travel from Islip to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Islip to Seattle flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • How long is a flight from Islip to Seattle?

    A nonstop flight from Islip to Seattle takes 00m, covering 2,440 miles.

  • Do I need a passport to fly from Islip to Seattle?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

  • Have flight prices from Islip to Seattle changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $409 to $939. That means the highest observed fare was about 2x higher than the lowest one.

  • What car rental options are available at Seattle/Tacoma Intl Airport (SEA)?

    Seattle/Tacoma Intl Airport (SEA) hosts 5 major car rental companies, with daily rates averaging $61 for economy cars. Top options include:

    • Fox
    • Europcar
    • Thrifty
    • Budget
    • Hertz

  • Which airports can I use when flying from Islip to Seattle?

    Flights from Islip to Seattle usually depart from Islip Long Island (ISP) and arrive at Seattle/Tacoma Intl (SEA).

  • Which airports do connecting flights from Islip to Seattle pass through?

    Most connecting flights from Islip to Seattle pass through Boston Logan Intl (BOS), which handles 100% of one-stop traffic on this route.

  • What is the time difference between Islip and Seattle?

    Seattle is 3 hours behind Islip (Pacific Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in Seattle?

    Some of the most popular sights in Seattle are Pike Place Market, Lumen Field and Space Needle. These are among the most viewed places in Seattle on KAYAK.

Your guide to booking Islip to Seattle flights

Get tips on when to book, when to fly and what to know before your trip.

More options for your flight from Islip to Seattle

Complete your trip to Seattle with a hotel stay or car rental