EYW - SEA

$164 Find Cheap Flights from Key West to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Key West to Seattle departing on 2/19. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Key West to Seattle, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Key West to Seattle, as well as popular online travel agencies
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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$429
United Airlines
Fri 1/23Sun 1/25
EYW - SEA • 1 stop
Cheapest one-way
$164
Typical prices: $261-$416
Multiple Airlines
Thu 2/19
EYW - SEA • 3 stops
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Seattle!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Key West to Seattle (EYW-SEA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Key West to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Key West to Seattle

Fri, Jan 23 - Sun, Jan 25
United Airlines Logo
4:15 pm - 10:43 pm
EYW
-
SEA
9h 28m1 stop
United Airlines Logo
11:45 pm - 1:03 pm
SEA
-
EYW
10h 18m1 stop
$429United Airlines
Fri, Jan 23 - Sun, Jan 25
United Airlines Logo
4:15 pm - 9:55 am
EYW
-
SEA
20h 40m2 stops
United Airlines Logo
11:45 pm - 1:03 pm
SEA
-
EYW
10h 18m1 stop
$484United Airlines
Fri, Jan 23 - Sun, Jan 25
United Airlines Logo
4:15 pm - 10:43 pm
EYW
-
SEA
9h 28m1 stop
United Airlines Logo
12:57 pm - 4:22 pm
SEA
-
EYW
24h 25m3 stops
$517United Airlines
Fri, Jan 23 - Sun, Jan 25
United Airlines Logo
4:15 pm - 9:55 am
EYW
-
SEA
20h 40m2 stops
United Airlines Logo
12:57 pm - 4:22 pm
SEA
-
EYW
24h 25m3 stops
$573United Airlines
Booking Insights

KAYAK's insights & trends for Key West to Seattle flights

Get data-powered insights and trends into flights from Key West to Seattle to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Key West to Seattle?

The average price of all round-trip flights from Key West to Seattle clicked on KAYAK for each day over the last 12 months.

For Key West to Seattle, Friday is the cheapest day to fly on average and Tuesday is the most expensive. Flying from Seattle back to Key West, the best deals are generally found on Wednesday, with Friday being the most expensive.

Find deals

Good to know

Cheapest flight$164
Most popular time to fly with an average 5% increase in price.
Flight from Key West to Seattle

When to book flights from Key West to Seattle

Are your dates flexible? Find out the best times to travel from Key West to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Key West to Seattle

  • What is the cheapest flight from Key West to Seattle?

    In the last 3 days, the lowest price for a flight from Key West to Seattle was $164 for a one-way ticket and $429 for a round-trip.

  • Do I need a passport to fly between Key West and Seattle?

    No

  • Which aircraft models fly most regularly from Key West to Seattle?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Key West to Seattle?

    oneworld is the only airline alliance operating flights between Key West and Seattle.

  • How does KAYAK find such low prices on flights from Key West to Seattle?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Key West to Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Key West to Seattle?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Key West is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Key West to Seattle?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Key West with another airline. Booking your flights between Key West and SEA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Key West to Seattle?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Key West up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Key West to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Key West to Seattle. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Key West to Seattle? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.2
American AirlinesOverall score based on 11048 reviews
6.9Entertainment
6.5Food
7.5Boarding
7.2Comfort
8.0Crew
Airline reviews

I appreciated that it was on time, safe and professional. I didn’t like that I wasn’t in a place where I had a window at my window seat. It would have been nice to know that in advance. If it was mentioned in the ticketing, I didn’t notice it.

8.0 ExcellentJolene, Dec 2025
GNV - DFW
Read more American Airlines reviews

I appreciated that it was on time, safe and professional. I didn’t like that I wasn’t in a place where I had a window at my window seat. It would have been nice to know that in advance. If it was mentioned in the ticketing, I didn’t notice it.

I like that the crew kept us informed but we moved back and forth from gate to gate before the aircraft arrived.

The experience with American Airlines was good, although the Philippines Airlines flight was much better (better seats, better food, better entertainment options, overall better). Again, the MIA to LAX flight was fine, but nothing in comparison to the comfort and accommodations of the Philippines Airlines flight from LAX to MNL.

I have a gluten allergy so didn't have any food

I enjoyed the extra leg room compared to other airlines. The first stewards made my daughter’s birthday special by giving her an extra snack. Then the last one coming home from Chicago to Appleton made our night really enjoyable Thanks for making our trip enjoyable

Flight was delayed because of a bird strike. They had another plane available within 45 minutes.

We had 3 flights. 1 & 2 were on the same plane but we had to de-board just to re-board 30 mins later. That may have been due to a crew change though. Our 3rd flight had a couple “maintenance” issues that held us up. They were quickly resolved but it took forever for someone to bring the paperwork needed so we could leave. Apparently there was a computer glitch so a driver had to bring a physical copy. It delayed us about 1 1/2 hrs. The flights themselves were smooth & no problems. For boarding, I don’t know why they don’t start with the back of the plane & move forward. It would eliminate the back up from people trying to find their seats & put their bags in the overhead bins. Unless you’re on an overseas flight, there is no food, you get a beverage & either a small bag of pretzels or a biscuit cookie. Take your own food or snacks of you want something more.

Lost bag and 2 days no word leaving for cruise no clothes or stuff

We will be writing a long, detailed letter to corporate about our awful experience with American airlines.

Internet was a bit expensive and did not work ask that week otherwise a good flight

Everything you need to know for your flight from Key West to Seattle

Information on your arrival and departure airports

Key West (EYW)
Seattle (SEA)