$236+ Cheap flights from Key West to Seattle (EYW - SEA)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/30. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — SEA
Jun 15 — Jun 221
Round-trip
1 adult, Economy
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Find cheap flights from Key West to Seattle with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Key West to Seattle
Cheapest
Best
Last-minute
One-way
Cheapest flights from Key West to SeattleExplore the most affordable flight options available from Key West to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 16, 2026.
Explore the most affordable flight options available from Key West to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 16, 2026.
This American Airlines deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/132:30 pm
EYW
- SEA
1 stop11h 21m
American Airlines
Sat 8/225:15 am
SEA
- EYW
1 stop10h 30m
American Airlines
Deal found 5/12![American Airlines logo]()
$379
This American Airlines deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/272:57 pm
EYW
- SEA
1 stop10h 56m
American Airlines
Sat 10/315:05 am
SEA
- EYW
1 stop8h 07m
American Airlines
Deal found 5/16![American Airlines logo]()
$429
This American Airlines deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/253:00 pm
EYW
- SEA
1 stop8h 39m
American Airlines
Sun 9/2711:09 pm
SEA
- EYW
1 stop8h 46m
American Airlines
Deal found 5/15![American Airlines logo]()
$535
This Delta deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/287:30 am
EYW
- SEA
1 stop9h 54m
Delta
Mon 6/16:00 am
SEA
- EYW
1 stop8h 23m
Delta
Deal found 5/13![Delta logo]()
$556
This American Airlines deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/224:44 pm
EYW
- SEA
1 stop9h 15m
American Airlines
Sun 5/317:10 am
SEA
- EYW
1 stop8h 39m
American Airlines
Deal found 5/12![American Airlines logo]()
$566
Best flights from Key West to SeattleDiscover carefully curated flight deals from Key West to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 16, 2026.
Discover carefully curated flight deals from Key West to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 16, 2026.
This American Airlines deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/253:00 pm
EYW
- SEA
1 stop8h 39m
American Airlines
Sun 9/2711:09 pm
SEA
- EYW
1 stop8h 46m
American Airlines
Deal found 5/15![American Airlines logo]()
$535
This KAYAK deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/96:15 pm
EYW
- SEA
1 stop8h 42m
Delta
Thu 8/1311:59 pm
SEA
- EYW
1 stop7h 51m
Delta
Deal found 5/14![Delta logo]()
$665
This United Airlines deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/194:05 pm
EYW
- SEA
1 stop9h 37m
United Airlines
Tue 9/2211:00 pm
SEA
- EYW
1 stop11h 34m
United Airlines
Deal found 5/12![United Airlines logo]()
$700
This American Airlines deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1311:30 am
EYW
- SEA
2 stops12h 19m
American Airlines
Sat 8/225:05 am
SEA
- EYW
2 stops11h 34m
American Airlines
Deal found 5/12![American Airlines logo]()
$542
This American Airlines deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/174:44 pm
EYW
- SEA
1 stop9h 15m
American Airlines
Thu 6/255:15 am
SEA
- EYW
1 stop10h 34m
American Airlines
Deal found 5/14![American Airlines logo]()
$643
This American Airlines deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/174:44 pm
EYW
- SEA
1 stop9h 15m
American Airlines
Tue 6/2310:35 pm
SEA
- EYW
1 stop12h 06m
American Airlines
Deal found 5/14![American Airlines logo]()
$717
Last-minute flights from Key West to SeattleDiscover last-minute flight deals from Key West to Seattle. Data last updated May 16, 2026 and is based on user searches.
Discover last-minute flight deals from Key West to Seattle. Data last updated May 16, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/216:45 am
EYW
- SEA
2 stops11h 08m
American Airlines
Sun 5/315:15 am
SEA
- EYW
1 stop10h 34m
American Airlines
Deal found 5/11![American Airlines logo]()
$536
This American Airlines deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/224:44 pm
EYW
- SEA
1 stop9h 15m
American Airlines
Sun 5/317:10 am
SEA
- EYW
1 stop8h 39m
American Airlines
Deal found 5/12![American Airlines logo]()
$566
One-way flights from Key West to SeattleSearch for one-way flight options from Key West to Seattle. Find affordable one-way fares based on user searches. Data last updated May 16, 2026.
Search for one-way flight options from Key West to Seattle. Find affordable one-way fares based on user searches. Data last updated May 16, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/307:53 pm
EYW
- SEA
3 stops41h 46m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$236
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/2911:46 am
EYW
- SEA
3 stops25h 53m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$272
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/271:11 pm
EYW
- SEA
3 stops48h 28m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$276
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/267:53 pm
EYW
- SEA
3 stops41h 46m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$277
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/3112:07 pm
EYW
- SEA
3 stops49h 32m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$287
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/281:14 pm
EYW
- SEA
2 stops24h 25m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$295
This Delta deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/272:24 pm
EYW
- SEA
1 stop10h 24m
Delta
Deal found 5/14![Delta logo]()
$308
Find flight deals from Key West to Seattle
Discover tips and strategies to find the most affordable flight options for your journey from Key West (EYW) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 16, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $379 (American Airlines) |
One-way from | $236 (Kiwi.com) |
Cheapflights Fare Finder
Customize your flight search to find flights from Key West to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 16, 2026.
Use the filters below to find and compare flights from Key West to Seattle that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Fri 9/25
3:00 pm-8:39 pm
1 stop8h 39m
Seattle/Tacoma Intl
Sun 9/27
11:09 pm-10:55 am
1 stop8h 46m
$535
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Thu 8/13
11:30 am-8:49 pm
2 stops12h 19m
Seattle/Tacoma Intl
Sat 8/22
5:05 am-7:39 pm
2 stops11h 34m
$542
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Wed 6/17
4:44 pm-10:59 pm
1 stop9h 15m
Seattle/Tacoma Intl
Thu 6/25
5:15 am-6:49 pm
1 stop10h 34m
$643
Quickest round-trip
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Sun 8/9
6:15 pm-11:57 pm
1 stop8h 42m
Seattle/Tacoma Intl
Thu 8/13
11:59 pm-10:50 am
1 stop7h 51m
$665
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Sat 9/19
4:05 pm-10:42 pm
1 stop9h 37m
Seattle/Tacoma Intl
Tue 9/22
11:00 pm-1:34 pm
1 stop11h 34m
$700
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Wed 6/17
4:44 pm-10:59 pm
1 stop9h 15m
Seattle/Tacoma Intl
Tue 6/23
10:35 pm-1:41 pm
1 stop12h 06m
$717
Cheapest one-way
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Fri 7/31
12:07 pm-9:49 am
2 stops24h 42m
$291
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Tue 7/28
1:14 pm-10:39 am
2 stops24h 25m
$295
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Thu 7/30
2:24 pm-9:48 pm
1 stop10h 24m
$308
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Mon 7/27
2:24 pm-9:48 pm
1 stop10h 24m
$308
Showing 1-10 of 17 resultsSorted by cheapest first
Compare providers for flights from Key West to Seattle
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Key West to Seattle in May.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Key West-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Key West-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Key West-Seattle flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Key West-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Key West-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Key West to Seattle
Have a flexible travel schedule? Discover the best time to fly to Seattle from Key West with our price prediction graph.
EYW-SEA
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Reviews of airlines servicing Seattle
Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated May 16, 2026.
See what other customers who have flown with American Airlines from Key West to Seattle have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
7.9
Food
6.4
Entertainment
6.9
Overall
7.1
Boarding
7.5
Comfort
7.2
Reviews
1 / 20
2.0
MediocreAnonymous,Mar 2026
MIA - SFO
Crew
7.9
Food
6.4
Entertainment
6.9
Overall
7.1
Boarding
7.5
Comfort
7.2
Reviews
1 / 20
2.0
MediocreAnonymous,Mar 2026
MIA - SFO
Related info for your journey
Find useful and relevant information for your journey from Key West to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsSeaTac
Tacoma
Ocean Shores
Olympia
Lacey
Edmonds
Leavenworth
Snoqualmie
Tumwater
Tukwila
Puyallup
Kent
Lynnwood
Renton
Ellensburg
Fife
Lakewood
Issaquah
Shoreline
Marysville
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Key West and Seattle flights
Browse other Key West and Seattle flight options. Last updated on May 16, 2026.
Other flights from Key West
Browse through other flights departing from Key West. Flights are based on user searches made on Cheapflights and were last updated on May 16, 2026.
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Top airline flying from Key West to Seattle
Discover the top airline that operate flights from Key West to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 16, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$308 | Average$471 | FlexibilityNo cancel fee | On-time71% |