$160+ 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 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — SEA
Apr 29 — May 61
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
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Best
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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 March 30, 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 March 30, 2026.
This Delta deal was found by Cheapflights users on 3/29. 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.
Fri 4/246:23 pm
EYW
- SEA
1 stop8h 30m
Delta
Sun 5/39:45 pm
SEA
- EYW
1 stop10h 01m
Delta
Deal found 3/29![Delta logo]()
$389
This American Airlines deal was found by Cheapflights users on 3/26. 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 4/242:01 pm
EYW
- SEA
1 stop10h 03m
American Airlines
Sat 5/212:59 am
SEA
- EYW
2 stops12h 31m
American Airlines
Deal found 3/26![American Airlines logo]()
$394
This Delta deal was found by Cheapflights users on 3/29. 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.
Thu 4/166:23 pm
EYW
- SEA
1 stop8h 30m
Delta
Sun 4/199:45 pm
SEA
- EYW
1 stop10h 01m
Delta
Deal found 3/29![Delta logo]()
$419
This American Airlines deal was found by Cheapflights users on 3/29. 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 4/162:29 pm
EYW
- SEA
2 stops11h 29m
American Airlines
Sun 4/196:00 am
SEA
- EYW
1 stop9h 49m
American Airlines
Deal found 3/29![American Airlines logo]()
$424
This Delta deal was found by Cheapflights users on 3/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/142:40 pm
EYW
- SEA
1 stop10h 25m
Delta
Sat 4/186:00 am
SEA
- EYW
1 stop8h 23m
Delta
Deal found 3/30![Delta logo]()
$449
This American Airlines deal was found by Cheapflights users on 3/27. 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.
Tue 4/146:45 am
EYW
- SEA
2 stops10h 42m
American Airlines
Tue 4/216:00 am
SEA
- EYW
1 stop8h 02m
American Airlines
Deal found 3/27![American Airlines logo]()
$479
This Delta deal was found by Cheapflights users on 3/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/146:23 pm
EYW
- SEA
1 stop8h 30m
Delta
Tue 4/2111:15 pm
SEA
- EYW
1 stop8h 31m
Delta
Deal found 3/27![Delta logo]()
$484
This American Airlines deal was found by Cheapflights users on 3/30. 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.
Thu 7/162:21 pm
EYW
- SEA
1 stop11h 05m
American Airlines
Mon 7/205:10 am
SEA
- EYW
1 stop10h 37m
American Airlines
Deal found 3/30![American Airlines logo]()
$515
This United Airlines deal was found by Cheapflights users on 3/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/14:47 pm
EYW
- SEA
1 stop9h 05m
United Airlines
Tue 5/511:00 pm
SEA
- EYW
1 stop11h 45m
United Airlines
Deal found 3/29![United Airlines logo]()
$529
This American Airlines deal was found by Cheapflights users on 3/30. 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 4/146:45 am
EYW
- SEA
2 stops12h 06m
American Airlines
Sat 4/186:00 am
SEA
- EYW
1 stop8h 02m
American Airlines
Deal found 3/30![American Airlines logo]()
$533
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 March 30, 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 March 30, 2026.
This Delta deal was found by Cheapflights users on 3/25. 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 4/247:33 am
EYW
- SEA
1 stop9h 55m
Delta
Sun 5/311:15 pm
SEA
- EYW
1 stop8h 31m
Delta
Deal found 3/25![Delta logo]()
$389
This United Airlines deal was found by Cheapflights users on 3/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/163:52 pm
EYW
- SEA
1 stop9h 50m
United Airlines
Sun 4/1910:55 pm
SEA
- EYW
1 stop11h 36m
United Airlines
Deal found 3/28![United Airlines logo]()
$419
This American Airlines deal was found by Cheapflights users on 3/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/163:58 pm
EYW
- SEA
2 stops11h 46m
American Airlines
Sun 4/1910:29 pm
SEA
- EYW
2 stops9h 25m
American Airlines
Deal found 3/28![American Airlines logo]()
$429
This Delta deal was found by Cheapflights users on 3/29. 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.
Thu 4/166:23 pm
EYW
- SEA
1 stop8h 30m
Delta
Sun 4/199:45 pm
SEA
- EYW
1 stop10h 01m
Delta
Deal found 3/29![Delta logo]()
$419
This American Airlines deal was found by Cheapflights users on 3/30. 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.
Thu 7/162:21 pm
EYW
- SEA
1 stop11h 05m
American Airlines
Mon 7/205:10 am
SEA
- EYW
1 stop10h 37m
American Airlines
Deal found 3/30![American Airlines logo]()
$515
This United Airlines deal was found by Cheapflights users on 3/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/14:47 pm
EYW
- SEA
1 stop9h 05m
United Airlines
Tue 5/511:00 pm
SEA
- EYW
1 stop11h 45m
United Airlines
Deal found 3/27![United Airlines logo]()
$529
This Delta deal was found by Cheapflights users on 3/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/146:23 pm
EYW
- SEA
1 stop8h 30m
Delta
Tue 4/2111:15 pm
SEA
- EYW
1 stop8h 31m
Delta
Deal found 3/27![Delta logo]()
$484
Last-minute flights from Key West to SeattleDiscover last-minute flight deals from Key West to Seattle. Data last updated March 30, 2026 and is based on user searches.
Discover last-minute flight deals from Key West to Seattle. Data last updated March 30, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 3/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/142:40 pm
EYW
- SEA
1 stop10h 25m
Delta
Sat 4/186:00 am
SEA
- EYW
1 stop8h 23m
Delta
Deal found 3/30![Delta logo]()
$449
This American Airlines deal was found by Cheapflights users on 3/27. 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.
Tue 4/146:45 am
EYW
- SEA
2 stops10h 42m
American Airlines
Tue 4/216:00 am
SEA
- EYW
1 stop8h 02m
American Airlines
Deal found 3/27![American Airlines logo]()
$479
This Delta deal was found by Cheapflights users on 3/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/146:23 pm
EYW
- SEA
1 stop8h 30m
Delta
Tue 4/2111:15 pm
SEA
- EYW
1 stop8h 31m
Delta
Deal found 3/27![Delta logo]()
$484
This American Airlines deal was found by Cheapflights users on 3/30. 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 4/146:45 am
EYW
- SEA
2 stops12h 06m
American Airlines
Sat 4/186:00 am
SEA
- EYW
1 stop8h 02m
American Airlines
Deal found 3/30![American Airlines logo]()
$533
This Delta deal was found by Cheapflights users on 3/29. 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.
Thu 4/166:23 pm
EYW
- SEA
1 stop8h 30m
Delta
Sun 4/199:45 pm
SEA
- EYW
1 stop10h 01m
Delta
Deal found 3/29![Delta logo]()
$419
This American Airlines deal was found by Cheapflights users on 3/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/163:58 pm
EYW
- SEA
2 stops11h 46m
American Airlines
Sun 4/196:00 am
SEA
- EYW
1 stop8h 02m
American Airlines
Deal found 3/28![American Airlines logo]()
$424
This Delta deal was found by Cheapflights users on 3/29. 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.
Fri 4/246:23 pm
EYW
- SEA
1 stop8h 30m
Delta
Sun 5/39:45 pm
SEA
- EYW
1 stop10h 01m
Delta
Deal found 3/29![Delta logo]()
$389
This American Airlines deal was found by Cheapflights users on 3/26. 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 4/242:01 pm
EYW
- SEA
1 stop10h 03m
American Airlines
Sat 5/212:59 am
SEA
- EYW
2 stops12h 31m
American Airlines
Deal found 3/26![American Airlines logo]()
$394
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 March 30, 2026.
Search for one-way flight options from Key West to Seattle. Find affordable one-way fares based on user searches. Data last updated March 30, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/611:46 am
EYW
- SEA
2 stops25h 36m
Multiple Airlines
Deal found 3/27![Multiple Airlines logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 3/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/71:57 pm
EYW
- SEA
3 stops47h 25m
Multiple Airlines
Deal found 3/27![Multiple Airlines logo]()
$162
This Kiwi.com deal was found by Cheapflights users on 3/29. 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.
Fri 4/249:49 am
EYW
- SEA
3 stops50h 38m
Multiple Airlines
Deal found 3/29![Multiple Airlines logo]()
$174
This Kiwi.com deal was found by Cheapflights users on 3/29. 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.
Thu 4/239:46 am
EYW
- SEA
2 stops27h 06m
Multiple Airlines
Deal found 3/29![Multiple Airlines logo]()
$181
This Kiwi.com deal was found by Cheapflights users on 3/28. 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.
Sun 4/269:58 am
EYW
- SEA
2 stops50h 29m
Multiple Airlines
Deal found 3/28![Multiple Airlines logo]()
$193
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 March 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $389 (Delta) |
One-way from | $160 (Kiwi.com) |
Popular in | March |
Cheapest in | February |
Average price | $904 |
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 March 30, 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 4/24
7:33 am-2:28 pm
1 stop9h 55m
Seattle/Tacoma Intl
Sun 5/3
11:15 pm-10:46 am
1 stop8h 31m
$389
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Thu 4/16
3:52 pm-10:42 pm
1 stop9h 50m
Seattle/Tacoma Intl
Sun 4/19
10:55 pm-1:31 pm
1 stop11h 36m
$419
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Thu 4/16
6:23 pm-11:53 pm
1 stop8h 30m
Seattle/Tacoma Intl
Sun 4/19
9:45 pm-10:46 am
1 stop10h 01m
$419
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Thu 4/16
3:58 pm-12:44 am
2 stops11h 46m
Seattle/Tacoma Intl
Sun 4/19
10:29 pm-10:54 am
2 stops9h 25m
$429
Quickest round-trip
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Tue 4/14
6:23 pm-11:53 pm
1 stop8h 30m
Seattle/Tacoma Intl
Tue 4/21
11:15 pm-10:46 am
1 stop8h 31m
$484
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Thu 7/16
2:21 pm-10:26 pm
1 stop11h 05m
Seattle/Tacoma Intl
Mon 7/20
5:10 am-6:47 pm
1 stop10h 37m
$515
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Fri 5/1
4:47 pm-10:52 pm
1 stop9h 05m
Seattle/Tacoma Intl
Tue 5/5
11:00 pm-1:45 pm
1 stop11h 45m
$529
Cheapest one-way
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Wed 5/6
11:46 am-10:22 am
2 stops25h 36m
$160
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Fri 4/24
9:49 am-9:27 am
2 stops26h 38m
$175
Key WestSeattle
EYW - SEA
EYWSEA
Key West
Wed 5/6
7:33 am-11:46 pm
2 stops19h 13m
$258
Showing 1-10 of 14 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 March.
| 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.
Cheapflights Insights
Everything you need to know about your flight from Key West to Seattle
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 March 30, 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.
Boarding
7.5
Overall
7.1
Entertainment
6.9
Comfort
7.2
Crew
7.9
Food
6.4
Reviews
1 / 20
2.0
MediocreAnonymous,Mar 2026
MIA - SFO
Boarding
7.5
Overall
7.1
Entertainment
6.9
Comfort
7.2
Crew
7.9
Food
6.4
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
Kent
Lynnwood
Lacey
Edmonds
Leavenworth
Snoqualmie
Tukwila
Renton
Puyallup
Kirkland
Ellensburg
Fife
Lakewood
Issaquah
Shoreline
Aberdeen
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Key West and Seattle flights
Browse other Key West and Seattle flight options. Last updated on March 30, 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 March 30, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to Seattle
Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on March 30, 2026.
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 March 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$308 | Average$471 | FlexibilityNo cancel fee | On-time71% |