EYW - SEA

$184 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 4/16. 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$354
Delta
Fri 4/24Sun 5/3
EYW - SEA • 1 stop
Cheapest one-way
$184
Typical prices: $408-$511
Multiple Airlines
Thu 4/16
EYW - SEA • 2 stops
Top airlines
United Airlines
Cheapest • from $329 (round-trip)
American Airlines
Best reviews • 7.2 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Start a new search
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, Apr 24 - Sun, May 3
Delta Logo
6:19 pm - 11:53 pm
EYW
-
SEA
8h 34m
1 stop
Delta Logo
9:45 pm - 10:50 am
SEA
-
EYW
10h 05m
1 stop
$354Delta
Sat, Feb 14 - Wed, Feb 18
United Airlines Logo
4:34 pm - 11:03 pm
EYW
-
SEA
9h 29m
1 stop
United Airlines Logo
10:55 am - 10:09 pm
SEA
-
EYW
8h 14m
1 stop
$416United Airlines
Fri, Apr 24 - Sun, May 3
Delta Logo
6:19 pm - 11:53 pm
EYW
-
SEA
8h 34m
1 stop
Delta Logo
11:15 pm - 10:50 am
SEA
-
EYW
8h 35m
1 stop
$424Delta
Thu, Feb 26 - Mon, Mar 2
United Airlines Logo
2:15 pm - 11:51 pm
EYW
-
SEA
12h 36m
1 stop
United Airlines Logo
11:35 pm - 1:15 pm
SEA
-
EYW
10h 40m
1 stop
$429United Airlines
Thu, Feb 26 - Mon, Mar 2
United Airlines Logo
2:15 pm - 11:51 pm
EYW
-
SEA
12h 36m
1 stop
United Airlines Logo
11:35 pm - 1:15 pm
SEA
-
EYW
10h 40m
1 stop
$459United Airlines
Thu, Feb 26 - Mon, Mar 2
United Airlines Logo
6:35 pm - 7:03 pm
EYW
-
SEA
27h 28m
2 stops
United Airlines Logo
11:35 pm - 1:15 pm
SEA
-
EYW
10h 40m
1 stop
$472United Airlines
Thu, Feb 26 - Mon, Mar 2
United Airlines Logo
6:35 pm - 7:03 pm
EYW
-
SEA
27h 28m
2 stops
United Airlines Logo
11:35 pm - 1:15 pm
SEA
-
EYW
10h 40m
1 stop
$492United Airlines
Fri, Apr 24 - Sun, May 3
United Airlines Logo
3:47 pm - 11:27 pm
EYW
-
SEA
34h 40m
3 stops
United Airlines Logo
11:00 pm - 1:45 pm
SEA
-
EYW
11h 45m
1 stop
$497United Airlines
Thu, Feb 26 - Mon, Mar 2
United Airlines Logo
6:35 pm - 7:03 pm
EYW
-
SEA
27h 28m
2 stops
United Airlines Logo
7:00 am - 4:07 pm
SEA
-
EYW
30h 07m
2 stops
$515United Airlines
Fri, Apr 24 - Sun, May 3
United Airlines Logo
3:47 pm - 9:46 am
EYW
-
SEA
20h 59m
2 stops
United Airlines Logo
11:00 pm - 1:45 pm
SEA
-
EYW
11h 45m
1 stop
$519United 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.

Which airlines provide the cheapest flights from Key West to Seattle?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Key West to Seattle were found on United Airlines ($329) and Delta ($354).

Find deals

Good to know

Cheapest flight$184
Most popular time to fly with an average 6% 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 $219 for a one-way ticket and $329 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 11213 reviews
8.0Crew
7.5Boarding
6.4Food
6.9Entertainment
7.2Comfort
Airline reviews

On time on a day with lots of weather cancellations on other flights. Thank you for getting me home during a winter storm!

10.0 ExcellentCindy, Jan 2026
MIA - BHM
Read more American Airlines reviews

On time on a day with lots of weather cancellations on other flights. Thank you for getting me home during a winter storm!

Don't change gate multiple times make people run across the airport. Announce delays in a timely manner. Have maintenance crew ready. Don't delay and keep passengers on the plane for 3 hrs. on tarmac.

The attendants were kind and helpful. A sugar-free drink would have been very welcome.

Little warm on the plane and delayed for an hour

UGH I HAD TO MISS MY FIRST FLIGHT TO TAMPA CAUSE OF THE 10 MINUTE DELAY OF THE ORLANDO TO MIAMI ONE SO THEY HAD ME GET ANOTHER TICKET. I AM NOT HAPPY AT ALL BECAUSE IT MADE ME MISS MY CONNECTING FLIGHT FROM TAMPA TO LONDON AND FORCED ME TO MISS A DAY AT MY ROOM IN THE UK.

Wish they didnt delay off-boarding for 10 minutes so i could connect to my flight from miami to tampa

It was fine. My connection in Charlotte to go to WPB was too late and I had to spend the night in the Charlotte Airport in the mini suites.

Boarding was organized and timely. Food was mediocre, especially for first class travel.

We were 4+ hours delayed. AA is absolutely obnoxious. They just kept pushing back the time to the point where we did not get into Vegas until after midnight when we were supposed to arrive like 845pm.

My last flight on 25 Dec, it’s Christmas Day, everyone happy and very good mood. I really enjoy traveling with Americans Airlines from Miami to Minneapolis my home town after long flight from lhe to Doha then Miami. Thank you again to make my travels comfortable and relaxed. Best regards

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)