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Cheap flights from Islip, New York to Seattle from $218

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Islip, New York to Seattle departing on 1/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Islip, New York to Seattle

Cheap round-trip flights

These are some of the best round-trip flight deals from Islip, New York to Seattle that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Islip, New York to Seattle.

Cheap last minute flights

Planning a quick getaway from Islip, New York to Seattle? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to Seattle, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from Islip, New York to Seattle

Find recent round-trip train or bus tickets from Islip, New York to Seattle.

All round-trip flight deals to Seattle

The cheapest plane tickets to Seattle found on KAYAK recently.
11:15 am - 11:00 pmISP-SEA
14h 45m2 stops
8:00 am - 10:15 pmSEA-ISP
11h 15m2 stops
$676Southwest
Find Deal
Thu, Dec 5 - Tue, Dec 17
1:57 pm - 12:57 amISP-SEA
38h 00m3 stops
6:35 pm - 5:11 pmSEA-ISP
19h 36m2 stops
$1,069
Find Deal
Mon, Dec 2 - Fri, Dec 6
1:57 pm - 12:57 amISP-SEA
38h 00m3 stops
12:50 pm - 5:11 pmSEA-ISP
25h 21m3 stops
$1,219
Find Deal
Mon, Dec 2 - Fri, Dec 6
11:25 am - 8:10 pmISP-SEA
11h 45m2 stops
$218Southwest
Find Deal
Fri, Jan 17

See travel insights to Seattle from

How to get the cheapest flight ticket from Islip, New York to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Seattle?

In general, January is the cheapest month to fly from Islip, New York to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $272. If you don’t want to visit Seattle in January, then you should wait until February to fly from Islip, New York, when ticket prices are also cheap, with an average price of $296.

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Islip, New York is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $386. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from Islip, New York because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $483.

What is the cheapest time of day to depart on your flight to Seattle?

Flying to Seattle from Islip, New York in the evening is the least expensive time of day to depart. momondo users have found prices as low as $336 when looking at flights departing in the evening. Flights to Seattle are more costly in the morning, with an average ticket price of $443. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight to Seattle?

You are more likely to see cheaper flights to Seattle from Islip, New York when booking 46 days ahead of your departure date. In general, you can expect to find flights to Seattle for around $394 when searching 46 days out. Keep in mind that you might be able to find cheaper flights to Seattle at any time. In fact, our users found flights for as low as $328 in the past 72 hours.

When to book flights from Islip, New York to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Islip, New York to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Islip, New York to Seattle (ISP to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Islip, New York to Seattle

Best Price Found

$218

Fastest flight time

11h 45m

Direct flights

None

Airports in Seattle

1 airport
The best one-way flight to Seattle from Islip, New York in the past 72 hours is $218. The best round-trip flight deal from Islip, New York to Seattle found on momondo in the last 72 hours is $676.
The fastest flight from Islip, New York to Seattle takes 11h 45m
There are no direct flights from Islip, New York to Seattle. Popular non-direct route for this connection is Islip Long Island Airport - Seattle/Tacoma Intl Airport.
There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)

  • How far is Islip Long Island to Seattle/Tacoma Intl by plane?

    Seattle/Tacoma Intl is 2436.8 mi away from Islip Long Island. By plane, this route typically takes 14h 45m.

  • When did momondo last update prices for flights from Islip Long Island Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from Islip Long Island Airport to Seattle/Tacoma Intl Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Islip Long Island Airport to Seattle/Tacoma Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Islip Long Island Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.


Why use momondo?

Why should I use momondo to find a flight deal from Islip to Seattle?

Finding the right flight to Seattle from Islip is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Seattle quick and easy, saving you time and money.

Can I find flights from Islip to Seattle with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Seattle from Islip with this policy.

How can momondo help me find flights from Islip to Seattle?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Seattle from Islip.

I’m not ready to book a flight from Islip to Seattle right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Seattle, momondo offers a useful price alert feature which will track prices for flights to Seattle from Islip and alert you when they change.


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