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$202+ 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 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — SEA
jun 17 — jun 241
ter 6/17
ter 6/24
1 adult, Economy
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Cheap 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 junho 12, 2025.

Round-trip from

$309
(American Airlines)

One-way from

$202
(JetBlue)

Popular in

November

Cheapest in

December

Average price

$632
From Key West to Seattle/Tacoma Intl
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One-way flight from Key West to Seattle/Tacoma Intl
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High demand for flights, 4% potential price rise
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Cheapest flight prices on average. 3% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Key West to Seattle

Cheapest flights from Key West to Seattle
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 junho 12, 2025.

This American Airlines deal was found by Cheapflights users on 6/10. 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.
qua 9/32:30 pmEYW - SEA
1 stop10h 34mAmerican Airlines
qua 9/106:42 amSEA - EYW
1 stop8h 04mAmerican Airlines
Deal found 6/10$309
This Delta deal was found by Cheapflights users on 6/11. 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.
sex 7/256:27 pmEYW - SEA
1 stop8h 28mDelta
ter 7/2911:30 pmSEA - EYW
1 stop8h 21mDelta
Deal found 6/11$404
This Mytrip deal was found by Cheapflights users on 6/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sex 7/2510:02 amEYW - SEA
3 stops33h 23mMultiple Airlines
ter 7/295:30 pmSEA - EYW
2 stops18h 35mMultiple Airlines
Deal found 6/11$586
This United Airlines deal was found by Cheapflights users on 6/10. 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.
ter 6/248:45 amEYW - SEA
2 stops43h 14mUnited Airlines
sex 6/2710:05 pmSEA - EYW
2 stops17h 00mUnited Airlines
Deal found 6/10$675

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 junho 12, 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

qua 9/3

2:30 pm-10:04 pm

1 stop10h 34m

Seattle/Tacoma Intl

qua 9/10

6:42 am-5:46 pm

1 stop8h 04m

$309

Key WestSeattle

EYW - SEA

EYWSEA

Key West

sex 7/25

6:27 pm-11:55 pm

1 stop8h 28m

Seattle/Tacoma Intl

ter 7/29

11:30 pm-10:51 am

1 stop8h 21m

$404

Key WestSeattle

EYW - SEA

EYWSEA

Key West

sex 7/25

10:02 am-4:25 pm

3 stops33h 23m

Seattle/Tacoma Intl

ter 7/29

5:30 pm-3:05 pm

2 stops18h 35m

$586

Key WestSeattle

EYW - SEA

EYWSEA

Key West

ter 6/24

8:45 am-12:59 am

2 stops43h 14m

Seattle/Tacoma Intl

sex 6/27

10:05 pm-6:05 pm

2 stops17h 00m

$675

Key WestSeattle

EYW - SEA

EYWSEA

Key West

qua 11/5

12:07 pm-9:19 pm

1 stop12h 12m

$202

Key WestSeattle

EYW - SEA

EYWSEA

Key West

sex 7/4

1:24 pm-11:47 pm

1 stop13h 23m

$244

Key WestSeattle

EYW - SEA

EYWSEA

Key West

sex 7/4

2:45 pm-1:46 pm

2 stops26h 01m

$289

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

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.

Cheapflights Insights

Everything you need to know about your flight from Key West to Seattle

What is the cheapest time of day to fly from EYW to SEA?

Find hourly flight availability from Key West to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated junho 12, 2025.

A simple way to save on the total cost of your ticket is to fly from Key West to Seattle at noon. If you’re flexible enough to do this you can expect to save up to 4% on your trip compared to booking a flight in the morning.

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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 junho 12, 2025.
To help decide which airline to fly from Key West to Seattle, see what other customers have to say about Delta, United Airlines and JetBlue. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,946 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.
Delta
8.0
Very good
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,946 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.
JetBlue
7.3
Good
2,925 reviews
Delta
8.0
Very good
7,946 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,946 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.

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.

  • What are the cheapest airlines flying 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 $309 on this airline. Additional options worth looking into are Delta and United Airlines, starting at $404 and $675 round-trip. These flights start at 37% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Key West to Seattle one-way?

    $202 is the cheapest one-way deal found within the past few days, from JetBlue. You may also be able to find cheap deals on American Airlines and United Airlines, with prices starting from $244 and $289, respectively.

  • 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.

  • What is the cheapest month to book a flight from Key West to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Key West to Seattle (average of $238). Flying from Key West to Seattle in July is currently the most expensive (average of $391). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Key West?

Book flights to Key West if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Lakewood
Ocean Shores
Lacey
Leavenworth
Federal Way
Lynnwood
Olympia
Shoreline
Kent
Cle Elum
Centralia
Kirkland
Aberdeen
Renton
Shelton
Silverdale
Issaquah

Browse thousands of different options on Cheapflights for your next trip

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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 junho 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$278Average$572FlexibilityNo cancel feeOn-time71%

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