$262+ 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 9/14. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — SEA
Aug 1 — Aug 81
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
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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
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 July 2, 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 July 2, 2026.
This Delta deal was found by Cheapflights users on 7/1. 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.
Wed 9/96:19 pm
EYW
- SEA
1 stop8h 40m
Delta
Wed 9/167:20 am
SEA
- EYW
1 stop9h 41m
Delta
Deal found 7/1![Delta logo]()
$429
This American Airlines deal was found by Cheapflights users on 6/27. 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 9/92:25 pm
EYW
- SEA
1 stop8h 42m
American Airlines
Wed 9/166:40 am
SEA
- EYW
1 stop8h 15m
American Airlines
Deal found 6/27![American Airlines logo]()
$487
This United Airlines deal was found by Cheapflights users on 7/1. 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 7/164:00 pm
EYW
- SEA
1 stop9h 56m
United Airlines
Mon 7/2011:00 pm
SEA
- EYW
1 stop11h 30m
United Airlines
Deal found 7/1![United Airlines logo]()
$529
This American Airlines deal was found by Cheapflights users on 6/29. 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 8/201:50 pm
EYW
- SEA
1 stop11h 09m
American Airlines
Mon 8/245:10 am
SEA
- EYW
1 stop8h 08m
American Airlines
Deal found 6/29![American Airlines logo]()
$535
This Trip.com deal was found by Cheapflights users on 7/1. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/1611:04 am
EYW
- SEA
2 stops26h 35m
Multiple Airlines
Mon 7/207:06 pm
SEA
- EYW
2 stops14h 28m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$559
This United Airlines deal was found by Cheapflights users on 7/1. 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 10/304:00 pm
EYW
- SEA
1 stop9h 53m
United Airlines
Tue 11/311:16 pm
SEA
- EYW
1 stop11h 43m
United Airlines
Deal found 7/1![United Airlines logo]()
$582
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 July 2, 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 July 2, 2026.
This United Airlines deal was found by Cheapflights users on 7/1. 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 7/164:00 pm
EYW
- SEA
1 stop9h 56m
United Airlines
Mon 7/2011:00 pm
SEA
- EYW
1 stop11h 30m
United Airlines
Deal found 7/1![United Airlines logo]()
$529
This American Airlines deal was found by Cheapflights users on 6/30. 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 11/242:39 pm
EYW
- SEA
1 stop9h 39m
American Airlines
Tue 12/15:48 am
SEA
- EYW
2 stops10h 41m
American Airlines
Deal found 6/30![American Airlines logo]()
$551
This United Airlines deal was found by Cheapflights users on 7/1. 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 10/304:00 pm
EYW
- SEA
1 stop9h 53m
United Airlines
Tue 11/311:16 pm
SEA
- EYW
1 stop11h 43m
United Airlines
Deal found 7/1![United Airlines logo]()
$582
This American Airlines deal was found by Cheapflights users on 6/27. 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 9/91:47 pm
EYW
- SEA
2 stops11h 53m
American Airlines
Wed 9/166:15 pm
SEA
- EYW
2 stops12h 26m
American Airlines
Deal found 6/27![American Airlines logo]()
$673
This American Airlines deal was found by Cheapflights users on 6/29. 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 8/201:41 pm
EYW
- SEA
2 stops11h 40m
American Airlines
Mon 8/245:10 am
SEA
- EYW
1 stop8h 08m
American Airlines
Deal found 6/29![American Airlines logo]()
$680
Last-minute flights from Key West to SeattleDiscover last-minute flight deals from Key West to Seattle. Data last updated July 2, 2026 and is based on user searches.
Discover last-minute flight deals from Key West to Seattle. Data last updated July 2, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 7/1. 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 7/164:00 pm
EYW
- SEA
1 stop9h 56m
United Airlines
Mon 7/2011:00 pm
SEA
- EYW
1 stop11h 30m
United Airlines
Deal found 7/1![United Airlines logo]()
$529
This Trip.com deal was found by Cheapflights users on 7/1. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/1611:04 am
EYW
- SEA
2 stops26h 35m
Multiple Airlines
Mon 7/207:06 pm
SEA
- EYW
2 stops14h 28m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$559
This American Airlines deal was found by Cheapflights users on 7/1. 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 7/161:01 pm
EYW
- SEA
1 stop10h 24m
American Airlines
Mon 7/209:35 pm
SEA
- EYW
2 stops10h 20m
American Airlines
Deal found 7/1![American Airlines logo]()
$754
This Kiwi.com deal was found by Cheapflights users on 6/28. 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 7/1612:18 pm
EYW
- SEA
1 stop10h 41m
Multiple Airlines
Sat 7/257:56 pm
SEA
- EYW
2 stops12h 04m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$2,238
This Kiwi.com deal was found by Cheapflights users on 6/28. 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 7/1612:18 pm
EYW
- SEA
1 stop10h 41m
Multiple Airlines
Wed 7/2211:00 pm
SEA
- EYW
2 stops33h 00m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$2,269
This Kiwi.com deal was found by Cheapflights users on 6/28. 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 7/1612:18 pm
EYW
- SEA
1 stop10h 41m
Multiple Airlines
Mon 7/2711:00 pm
SEA
- EYW
2 stops33h 00m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$2,281
This Kiwi.com deal was found by Cheapflights users on 6/28. 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 7/1612:18 pm
EYW
- SEA
1 stop10h 41m
Multiple Airlines
Thu 7/2311:00 pm
SEA
- EYW
2 stops32h 50m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$2,385
This Kiwi.com deal was found by Cheapflights users on 6/28. 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 7/1612:18 pm
EYW
- SEA
1 stop10h 41m
Multiple Airlines
Sun 7/268:00 am
SEA
- EYW
2 stops24h 00m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$2,414
This Alaska Airlines deal was found by Cheapflights users on 6/28. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/1912:18 pm
EYW
- SEA
2 stops22h 55m
Alaska Airlines
Fri 7/248:28 am
SEA
- EYW
1 stop26h 13m
Alaska Airlines
Deal found 6/28![Alaska Airlines logo]()
$2,134
This American Airlines deal was found by Cheapflights users on 6/29. 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 8/201:50 pm
EYW
- SEA
1 stop11h 09m
American Airlines
Mon 8/245:10 am
SEA
- EYW
1 stop8h 08m
American Airlines
Deal found 6/29![American Airlines logo]()
$535
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 July 2, 2026.
Search for one-way flight options from Key West to Seattle. Find affordable one-way fares based on user searches. Data last updated July 2, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/29. 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 9/1412:59 pm
EYW
- SEA
3 stops38h 28m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$262
This Kiwi.com deal was found by Cheapflights users on 6/29. 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 9/136:11 pm
EYW
- SEA
3 stops42h 49m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$267
This Delta deal was found by Cheapflights users on 6/29. 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.
Sun 9/136:19 pm
EYW
- SEA
1 stop8h 40m
Delta
Deal found 6/29![Delta logo]()
$308
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 12/110:59 am
EYW
- SEA
3 stops34h 47m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$443
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 July 2, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $429 (Delta) |
One-way from | $262 (Kiwi.com) |
Popular in | June |
Cheapest in | April |
Average price | $649 |
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 July 2, 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
Thu 7/16
4:00 pm-10:56 pm
1 stop9h 56m
Seattle/Tacoma Intl
Mon 7/20
11:00 pm-1:30 pm
1 stop11h 30m
$529
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Tue 11/24
2:39 pm-9:18 pm
1 stop9h 39m
Seattle/Tacoma Intl
Tue 12/1
5:48 am-7:29 pm
2 stops10h 41m
$551
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Fri 10/30
4:00 pm-10:53 pm
1 stop9h 53m
Seattle/Tacoma Intl
Tue 11/3
11:16 pm-1:59 pm
1 stop11h 43m
$582
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Wed 9/9
1:47 pm-10:40 pm
2 stops11h 53m
Seattle/Tacoma Intl
Wed 9/16
6:15 pm-9:41 am
2 stops12h 26m
$673
Quickest round-trip
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Thu 8/20
1:41 pm-10:21 pm
2 stops11h 40m
Seattle/Tacoma Intl
Mon 8/24
5:10 am-4:18 pm
1 stop8h 08m
$680
Cheapest one-way
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Mon 9/14
12:59 pm-12:27 am
3 stops38h 28m
$262
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Sun 9/13
6:11 pm-10:00 am
3 stops42h 49m
$267
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Tue 12/1
6:00 pm-12:09 am
1 stop9h 09m
$308
Quickest one-way
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Sun 9/13
6:19 pm-11:59 pm
1 stop8h 40m
$308
Sorted 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 July.
| 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 July 2, 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.
Overall
7.1
Entertainment
6.8
Crew
7.9
Boarding
7.5
Food
6.4
Comfort
7.2
Reviews
1 / 20
2.0
MediocreAnonymous,Mar 2026
MIA - SFO
Overall
7.1
Entertainment
6.8
Crew
7.9
Boarding
7.5
Food
6.4
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
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Olympia
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Edmonds
Snoqualmie
Tumwater
Tukwila
Renton
Kent
Lynnwood
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Key West and Seattle flights
Browse other Key West and Seattle flight options. Last updated on July 2, 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 July 2, 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 July 2, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$308 | Average$471 | FlexibilityNo cancel fee | On-time71% |