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$269+ 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 3/25. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — SEA
Jan 30 — Feb 61
Fri 1/30
Fri 2/6
1 adult, Economy
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Cheap flight deals from Key West to Seattle

Best flights from Key West to Seattle
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 December 31, 2025.

This United Airlines deal was found by Cheapflights users on 12/28. 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.
Wed 2/42:25 pmEYW - SEA
1 stop11h 50mUnited Airlines
Sat 2/711:45 pmSEA - EYW
1 stop10h 18mUnited Airlines
Deal found 12/28$329
This American Airlines deal was found by Cheapflights users on 12/28. 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.
Wed 2/41:22 pmEYW - SEA
1 stop10h 23mAmerican Airlines
Sat 2/79:45 pmSEA - EYW
2 stops12h 18mAmerican Airlines
Deal found 12/28$334
This Delta deal was found by Cheapflights users on 12/29. 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 5/82:35 pmEYW - SEA
1 stop10h 30mDelta
Sun 5/179:20 pmSEA - EYW
1 stop10h 38mDelta
Deal found 12/29$519
This American Airlines deal was found by Cheapflights users on 12/29. 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.
Wed 1/144:37 pmEYW - SEA
1 stop10h 05mAmerican Airlines
Wed 1/217:00 amSEA - EYW
1 stop8h 01mAmerican Airlines
Deal found 12/29$359
This American Airlines deal was found by Cheapflights users on 12/30. 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.
Wed 1/144:37 pmEYW - SEA
1 stop10h 05mAmerican Airlines
Sun 1/1811:11 pmSEA - EYW
1 stop8h 46mAmerican Airlines
Deal found 12/30$389
This American Airlines deal was found by Cheapflights users on 12/29. 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.
Fri 5/86:45 pmEYW - SEA
1 stop18h 09mAmerican Airlines
Sat 5/1610:47 pmSEA - EYW
1 stop12h 02mAmerican Airlines
Deal found 12/29$471
This American Airlines deal was found by Cheapflights users on 12/29. 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.
Sat 5/91:38 pmEYW - SEA
2 stops11h 48mAmerican Airlines
Mon 5/185:43 amSEA - EYW
1 stop8h 19mAmerican Airlines
Deal found 12/29$508

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 December 31, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$329
(United Airlines)

One-way from

$269
(American Airlines)

Popular in

June

Cheapest in

January

Average price

$651
Provider with most accurate pricing for Key West-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Key West-Seattle/Tacoma Intl flights.
Search Deals
From Key West to Seattle/Tacoma Intl
Search Deals
One-way flight from Key West to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($96 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 31, 2025.
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

Wed 2/4

2:25 pm-11:15 pm

1 stop11h 50m

Seattle/Tacoma Intl

Sat 2/7

11:45 pm-1:03 pm

1 stop10h 18m

$329

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Wed 2/4

1:22 pm-8:45 pm

1 stop10h 23m

Seattle/Tacoma Intl

Sat 2/7

9:45 pm-1:03 pm

2 stops12h 18m

$334

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Wed 1/14

4:37 pm-11:42 pm

1 stop10h 05m

Seattle/Tacoma Intl

Wed 1/21

7:00 am-6:01 pm

1 stop8h 01m

$359

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Wed 1/14

4:37 pm-11:42 pm

1 stop10h 05m

Seattle/Tacoma Intl

Sun 1/18

11:11 pm-10:57 am

1 stop8h 46m

$389

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Fri 5/8

6:45 pm-9:54 am

1 stop18h 09m

Seattle/Tacoma Intl

Sat 5/16

10:47 pm-1:49 pm

1 stop12h 02m

$471

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Sat 5/9

1:38 pm-10:26 pm

2 stops11h 48m

Seattle/Tacoma Intl

Mon 5/18

5:43 am-5:02 pm

1 stop8h 19m

$508

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Fri 5/8

2:35 pm-10:05 pm

1 stop10h 30m

Seattle/Tacoma Intl

Sun 5/17

9:20 pm-10:58 am

1 stop10h 38m

$519

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Wed 3/25

2:06 pm-9:08 pm

1 stop10h 02m

$269

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Sat 1/10

10:49 am-4:29 pm

3 stops56h 40m

$270

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Sat 1/10

1:16 pm-10:20 pm

1 stop12h 04m

$431

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/29

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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Key West-Seattle flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Key West-Seattle flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.
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 December 31, 2025.
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.
American Airlines
7.2
Good
11,074 reviews

Food

6.4

Entertainment

6.9

Boarding

7.5

Crew

8.0

Comfort

7.2

Overall

7.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

MIA - DCA

Flight delayed 5 hours and was told it was due to mechanical issues. Instead of providing lodging due to missed connecting flight, American changed the cause of delay to weather, which meant they were not able required to provide a hotel. To make matters worse, one of our checked bags was lost even though its status said it was “by the plane” but no one at the service desk seemed able to locate it.
American Airlines
7.2
Good
11,074 reviews
American Airlines
7.2
Good
11,074 reviews

Food

6.4

Entertainment

6.9

Boarding

7.5

Crew

8.0

Comfort

7.2

Overall

7.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

MIA - DCA

Flight delayed 5 hours and was told it was due to mechanical issues. Instead of providing lodging due to missed connecting flight, American changed the cause of delay to weather, which meant they were not able required to provide a hotel. To make matters worse, one of our checked bags was lost even though its status said it was “by the plane” but no one at the service desk seemed able to locate it.

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.

  • How long is the flight from Key West to Seattle?

    For as low as $334, United Airlines can have you in Seattle from Key West in 10h 23m. Key West and Seattle are separated by a distance of 2715 mi. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from Key West to Seattle round-trip?

    Our cheapest airline available from Key West to Seattle is American Airlines. Our recent data shows that you can find tickets from as low as $308 on this airline. This flight start at 41% lower than the current average price 3 months from now.

  • Can I find deals for flights from Key West to Seattle that include hotel bookings?

    Yes. In addition to deals on Key West to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Key West to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Key West to Seattle.

  • Can I find deals for business class flights from Key West to Seattle?

    Yes. Cheapflights offers flight deals from Key West to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
SeaTac
Lakewood
Ocean Shores
Olympia
Edmonds
Lynnwood
Renton
Puyallup
Kirkland
Kent
Tukwila
Marysville
Fife
Aberdeen
Shoreline
Centralia
Federal Way
Chehalis
Tumwater

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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 December 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$308Average$535FlexibilityNo cancel feeOn-time71%

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