$169+ 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 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — SEA
Mar 14 — Mar 211
1 adult, Economy
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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
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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
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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 February 12, 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 February 12, 2026.
This American Airlines deal was found by Cheapflights users on 2/11. 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 2/263:51 pm
EYW
- SEA
1 stop10h 49m
American Airlines
Mon 3/25:37 am
SEA
- EYW
1 stop7h 47m
American Airlines
Deal found 2/11![American Airlines logo]()
$389
This United Airlines deal was found by Cheapflights users on 2/8. 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.
Fri 4/243:47 pm
EYW
- SEA
1 stop11h 32m
United Airlines
Sun 5/311:00 pm
SEA
- EYW
1 stop11h 45m
United Airlines
Deal found 2/8![United Airlines logo]()
$429
This United Airlines deal was found by Cheapflights users on 2/10. 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.
Fri 5/294:05 pm
EYW
- SEA
1 stop10h 54m
United Airlines
Tue 6/211:03 pm
SEA
- EYW
1 stop10h 59m
United Airlines
Deal found 2/10![United Airlines logo]()
$449
This Delta deal was found by Cheapflights users on 2/10. 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.
Fri 5/297:30 am
EYW
- SEA
2 stops16h 00m
Delta
Tue 6/210:35 pm
SEA
- EYW
1 stop9h 18m
Delta
Deal found 2/10![Delta logo]()
$452
This United Airlines deal was found by Cheapflights users on 2/8. 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.
Thu 2/262:15 pm
EYW
- SEA
1 stop12h 36m
United Airlines
Mon 3/211:35 pm
SEA
- EYW
1 stop10h 40m
United Airlines
Deal found 2/8![United Airlines logo]()
$459
This American Airlines deal was found by Cheapflights users on 2/11. 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.
Fri 4/244:20 pm
EYW
- SEA
2 stops11h 24m
American Airlines
Sun 5/310:16 pm
SEA
- EYW
1 stop9h 38m
American Airlines
Deal found 2/11![American Airlines logo]()
$464
This American Airlines deal was found by Cheapflights users on 2/9. 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 3/203:56 pm
EYW
- SEA
1 stop10h 44m
American Airlines
Mon 3/2311:59 pm
SEA
- EYW
2 stops11h 41m
American Airlines
Deal found 2/9![American Airlines logo]()
$491
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 February 12, 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 February 12, 2026.
This American Airlines deal was found by Cheapflights users on 2/11. 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 2/263:51 pm
EYW
- SEA
1 stop10h 49m
American Airlines
Mon 3/25:37 am
SEA
- EYW
1 stop7h 47m
American Airlines
Deal found 2/11![American Airlines logo]()
$389
This United Airlines deal was found by Cheapflights users on 2/8. 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.
Fri 4/243:47 pm
EYW
- SEA
1 stop11h 32m
United Airlines
Sun 5/311:00 pm
SEA
- EYW
1 stop11h 45m
United Airlines
Deal found 2/8![United Airlines logo]()
$429
This Delta deal was found by Cheapflights users on 2/10. 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.
Fri 5/297:30 am
EYW
- SEA
2 stops16h 00m
Delta
Mon 6/110:35 pm
SEA
- EYW
1 stop9h 18m
Delta
Deal found 2/10![Delta logo]()
$452
This United Airlines deal was found by Cheapflights users on 2/10. 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.
Fri 5/294:05 pm
EYW
- SEA
1 stop10h 54m
United Airlines
Mon 6/111:03 pm
SEA
- EYW
1 stop10h 59m
United Airlines
Deal found 2/10![United Airlines logo]()
$449
This Delta deal was found by Cheapflights users on 2/10. 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.
Fri 5/297:30 am
EYW
- SEA
2 stops16h 00m
Delta
Tue 6/210:35 pm
SEA
- EYW
1 stop9h 18m
Delta
Deal found 2/10![Delta logo]()
$452
This American Airlines deal was found by Cheapflights users on 2/8. 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 4/244:20 pm
EYW
- SEA
2 stops11h 24m
American Airlines
Sun 5/36:00 am
SEA
- EYW
1 stop8h 02m
American Airlines
Deal found 2/8![American Airlines logo]()
$459
This United Airlines deal was found by Cheapflights users on 2/9. 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.
Fri 3/204:55 pm
EYW
- SEA
1 stop9h 04m
United Airlines
Mon 3/2311:59 pm
SEA
- EYW
1 stop10h 24m
United Airlines
Deal found 2/9![United Airlines logo]()
$449
This United Airlines deal was found by Cheapflights users on 2/8. 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.
Thu 2/262:15 pm
EYW
- SEA
1 stop12h 36m
United Airlines
Mon 3/211:35 pm
SEA
- EYW
1 stop10h 40m
United Airlines
Deal found 2/8![United Airlines logo]()
$459
Last-minute flights from Key West to SeattleDiscover last-minute flight deals from Key West to Seattle. Data last updated February 12, 2026 and is based on user searches.
Discover last-minute flight deals from Key West to Seattle. Data last updated February 12, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 2/11. 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 2/263:51 pm
EYW
- SEA
1 stop10h 49m
American Airlines
Mon 3/25:37 am
SEA
- EYW
1 stop7h 47m
American Airlines
Deal found 2/11![American Airlines logo]()
$389
This United Airlines deal was found by Cheapflights users on 2/8. 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.
Thu 2/262:15 pm
EYW
- SEA
1 stop12h 36m
United Airlines
Mon 3/211:35 pm
SEA
- EYW
1 stop10h 40m
United Airlines
Deal found 2/8![United Airlines logo]()
$459
This United Airlines deal was found by Cheapflights users on 2/9. 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.
Fri 3/204:55 pm
EYW
- SEA
1 stop9h 04m
United Airlines
Mon 3/2311:59 pm
SEA
- EYW
1 stop10h 24m
United Airlines
Deal found 2/9![United Airlines logo]()
$449
This American Airlines deal was found by Cheapflights users on 2/9. 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 3/203:56 pm
EYW
- SEA
1 stop10h 44m
American Airlines
Mon 3/2311:59 pm
SEA
- EYW
2 stops11h 41m
American Airlines
Deal found 2/9![American Airlines logo]()
$491
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 February 12, 2026.
Search for one-way flight options from Key West to Seattle. Find affordable one-way fares based on user searches. Data last updated February 12, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 3/1111:51 am
EYW
- SEA
3 stops26h 28m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$169
This Kiwi.com deal was found by Cheapflights users on 2/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/269:58 am
EYW
- SEA
2 stops50h 29m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$238
This United Airlines deal was found by Cheapflights users on 2/9. 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.
Wed 3/114:05 pm
EYW
- SEA
1 stop9h 40m
United Airlines
Deal found 2/9![United Airlines logo]()
$268
This Delta deal was found by Cheapflights users on 2/10. 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.
Sat 8/81:20 pm
EYW
- SEA
1 stop10h 22m
Delta
Deal found 2/10![Delta logo]()
$293
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 8/99:31 pm
EYW
- SEA
3 stops45h 08m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$322
This American Airlines deal was found by Cheapflights users on 2/11. 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.
Sun 4/267:30 pm
EYW
- SEA
1 stop8h 14m
American Airlines
Deal found 2/11![American Airlines logo]()
$325
This American Airlines deal was found by Cheapflights users on 2/10. 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.
Sun 8/912:50 pm
EYW
- SEA
1 stop11h 00m
American Airlines
Deal found 2/10![American Airlines logo]()
$340
This Kiwi.com deal was found by Cheapflights users on 2/10. 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.
Sat 8/84:35 pm
EYW
- SEA
3 stops50h 04m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$387
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 February 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $429 (United Airlines) |
One-way from | $169 (Kiwi.com) |
Popular in | June |
Cheapest in | February |
Average price | $329 |
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 February 12, 2026.
Use the filters below to find and compare flights from Key West to Seattle that are best for you.
Fly from
Key West
Fly to
Seattle
Route
Depart
Return
Price
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Thu 2/26
3:51 pm-11:40 pm
1 stop10h 49m
Seattle/Tacoma Intl
Mon 3/2
5:37 am-4:24 pm
1 stop7h 47m
$389
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Fri 4/24
3:47 pm-12:19 am
1 stop11h 32m
Seattle/Tacoma Intl
Sun 5/3
11:00 pm-1:45 pm
1 stop11h 45m
$429
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Fri 5/29
4:05 pm-11:59 pm
1 stop10h 54m
Seattle/Tacoma Intl
Mon 6/1
11:03 pm-1:02 pm
1 stop10h 59m
$449
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Fri 3/20
4:55 pm-10:59 pm
1 stop9h 04m
Seattle/Tacoma Intl
Mon 3/23
11:59 pm-1:23 pm
1 stop10h 24m
$449
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Fri 5/29
7:30 am-8:30 pm
2 stops16h 00m
Seattle/Tacoma Intl
Mon 6/1
10:35 pm-10:53 am
1 stop9h 18m
$452
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Fri 5/29
7:30 am-8:30 pm
2 stops16h 00m
Seattle/Tacoma Intl
Tue 6/2
10:35 pm-10:53 am
1 stop9h 18m
$452
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Fri 4/24
4:20 pm-12:44 am
2 stops11h 24m
Seattle/Tacoma Intl
Sun 5/3
6:00 am-5:02 pm
1 stop8h 02m
$459
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Thu 2/26
2:15 pm-11:51 pm
1 stop12h 36m
Seattle/Tacoma Intl
Mon 3/2
11:35 pm-1:15 pm
1 stop10h 40m
$459
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Wed 3/11
11:51 am-11:19 am
3 stops26h 28m
$169
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Sun 4/26
9:58 am-9:27 am
2 stops50h 29m
$238
Showing 1-10 of 16 results
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 February.
| 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 February 12, 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.
Entertainment
6.9
Comfort
7.2
Boarding
7.5
Overall
7.2
Crew
8.0
Food
6.4
Reviews
1 / 20
4.0
OkaySusie,Jan 2026
TPA - CLT
Entertainment
6.9
Comfort
7.2
Boarding
7.5
Overall
7.2
Crew
8.0
Food
6.4
Reviews
1 / 20
4.0
OkaySusie,Jan 2026
TPA - CLT
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 locationsTacoma
SeaTac
Lakewood
Ocean Shores
Olympia
Lynnwood
Edmonds
Lacey
Kent
Renton
Puyallup
Kirkland
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Fife
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Chehalis
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Key West and Seattle flights
Browse other Key West and Seattle flight options. Last updated on February 12, 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 February 12, 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 February 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$278 | Average$489 | FlexibilityNo cancel fee | On-time71% |