$147+ 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 8/24. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — SEA
Aug 11 — Aug 181
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 July 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 July 12, 2026.
This Delta deal was found by Cheapflights users on 7/8. 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 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 7/8![Delta logo]()
$429
This United Airlines deal was found by Cheapflights users on 7/10. 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.
Sat 10/244:00 pm
EYW
- SEA
1 stop9h 56m
United Airlines
Tue 10/2711:16 pm
SEA
- EYW
1 stop11h 43m
United Airlines
Deal found 7/10![United Airlines logo]()
$479
This American Airlines deal was found by Cheapflights users on 7/10. 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.
Fri 8/211:50 pm
EYW
- SEA
1 stop11h 09m
American Airlines
Fri 8/288:21 pm
SEA
- EYW
1 stop10h 23m
American Airlines
Deal found 7/10![American Airlines logo]()
$535
This United Airlines deal was found by Cheapflights users on 7/8. 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 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 7/8![United Airlines logo]()
$582
This American Airlines deal was found by Cheapflights users on 7/9. 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.
Wed 9/911:30 am
EYW
- SEA
2 stops11h 18m
American Airlines
Wed 9/166:40 am
SEA
- EYW
1 stop8h 15m
American Airlines
Deal found 7/9![American Airlines logo]()
$609
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 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 July 12, 2026.
This Delta deal was found by Cheapflights users on 7/11. 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 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 7/11![Delta logo]()
$464
This United Airlines deal was found by Cheapflights users on 7/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/244:00 pm
EYW
- SEA
1 stop9h 56m
United Airlines
Tue 10/2711:16 pm
SEA
- EYW
1 stop11h 43m
United Airlines
Deal found 7/11![United Airlines logo]()
$479
This American Airlines deal was found by Cheapflights users on 7/10. 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.
Fri 8/211:50 pm
EYW
- SEA
1 stop11h 09m
American Airlines
Fri 8/288:21 pm
SEA
- EYW
1 stop10h 23m
American Airlines
Deal found 7/10![American Airlines logo]()
$535
This United Airlines deal was found by Cheapflights users on 7/8. 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 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 7/8![United Airlines logo]()
$582
This American Airlines deal was found by Cheapflights users on 7/12. 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.
Wed 9/911:30 am
EYW
- SEA
2 stops11h 18m
American Airlines
Wed 9/1610:45 pm
SEA
- EYW
2 stops11h 32m
American Airlines
Deal found 7/12![American Airlines logo]()
$673
Last-minute flights from Key West to SeattleDiscover last-minute flight deals from Key West to Seattle. Data last updated July 12, 2026 and is based on user searches.
Discover last-minute flight deals from Key West to Seattle. Data last updated July 12, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 7/10. 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.
Fri 8/211:50 pm
EYW
- SEA
1 stop11h 09m
American Airlines
Fri 8/288:21 pm
SEA
- EYW
1 stop10h 23m
American Airlines
Deal found 7/10![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 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 July 12, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/10. 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.
Mon 8/241:11 pm
EYW
- SEA
2 stops23h 08m
Multiple Airlines
Deal found 7/10![Multiple Airlines logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 7/7. 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 10/61:16 pm
EYW
- SEA
2 stops38h 11m
Multiple Airlines
Deal found 7/7![Multiple Airlines logo]()
$190
This Delta deal was found by Cheapflights users on 7/7. 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.
Tue 10/62:00 pm
EYW
- SEA
1 stop11h 03m
Delta
Deal found 7/7![Delta logo]()
$288
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 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $429 (Delta) |
One-way from | $147 (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 12, 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
Quickest round-trip
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Wed 9/9
6:19 pm-11:59 pm
1 stop8h 40m
Seattle/Tacoma Intl
Wed 9/16
7:20 am-8:01 pm
1 stop9h 41m
$464
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Sat 10/24
4:00 pm-10:56 pm
1 stop9h 56m
Seattle/Tacoma Intl
Tue 10/27
11:16 pm-1:59 pm
1 stop11h 43m
$479
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Fri 8/21
1:50 pm-9:59 pm
1 stop11h 09m
Seattle/Tacoma Intl
Fri 8/28
8:21 pm-9:44 am
1 stop10h 23m
$535
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
11:30 am-7:48 pm
2 stops11h 18m
Seattle/Tacoma Intl
Wed 9/16
10:45 pm-1:17 pm
2 stops11h 32m
$673
Cheapest one-way
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Mon 8/24
1:11 pm-9:19 am
2 stops23h 08m
$147
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Tue 10/6
1:16 pm-12:27 am
2 stops38h 11m
$190
Quickest one-way
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Tue 10/6
2:00 pm-10:03 pm
1 stop11h 03m
$288
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 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
6.8
Food
6.4
Crew
7.9
Comfort
7.2
Boarding
7.5
Overall
7.1
Reviews
1 / 20
8.0
ExcellentOlwin,Jul 2026
MCO - DCA
Entertainment
6.8
Food
6.4
Crew
7.9
Comfort
7.2
Boarding
7.5
Overall
7.1
Reviews
1 / 20
8.0
ExcellentOlwin,Jul 2026
MCO - DCA
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
Lacey
Leavenworth
Olympia
Ocean Shores
Edmonds
Snoqualmie
Tumwater
Tukwila
Renton
Kent
Lynnwood
Ellensburg
Fife
Marysville
Lakewood
Issaquah
Shoreline
Centralia
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Key West and Seattle flights
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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 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$308 | Average$471 | FlexibilityNo cancel fee | On-time71% |