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Cheap flights from Key West to Seattle from $190

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Key West to Seattle departing on 4/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Key West to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
3:51 pm - 11:40 pm
EYW
-
SEA
10h 49m
1 stop
American Airlines Logo
5:30 am - 4:24 pm
SEA
-
EYW
7h 54m
1 stop
$329American Airlines
Wed, Mar 4 - Wed, Mar 11
American Airlines Logo
3:51 pm - 11:40 pm
EYW
-
SEA
10h 49m
1 stop
American Airlines Logo
7:21 am - 10:37 pm
SEA
-
EYW
12h 16m
2 stops
$334American Airlines
Wed, Mar 4 - Wed, Mar 11
American Airlines Logo
1:55 pm - 12:24 am
EYW
-
SEA
13h 29m
2 stops
American Airlines Logo
7:21 am - 10:37 pm
SEA
-
EYW
12h 16m
2 stops
$339American Airlines
Wed, Mar 4 - Wed, Mar 11
American Airlines Logo
12:55 pm - 11:04 pm
EYW
-
SEA
13h 09m
2 stops
American Airlines Logo
5:37 am - 4:24 pm
SEA
-
EYW
7h 47m
1 stop
$394American Airlines
Wed, Feb 18 - Sun, Feb 22
American Airlines Logo
12:55 pm - 11:04 pm
EYW
-
SEA
13h 09m
2 stops
American Airlines Logo
12:07 am - 1:15 pm
SEA
-
EYW
10h 08m
2 stops
$399American Airlines
Wed, Feb 18 - Sat, Feb 21
Delta Logo
6:19 pm - 10:00 am
EYW
-
SEA
18h 41m
1 stop
Delta Logo
9:45 pm - 10:50 am
SEA
-
EYW
10h 05m
1 stop
$417Delta
Fri, Apr 24 - Mon, May 4
United Airlines Logo
3:56 pm - 10:43 pm
EYW
-
SEA
9h 47m
1 stop
United Airlines Logo
11:35 pm - 1:15 pm
SEA
-
EYW
10h 40m
1 stop
$429United Airlines
Thu, Feb 26 - Mon, Mar 2
American Airlines Logo
4:20 pm - 12:44 am
EYW
-
SEA
11h 24m
2 stops
American Airlines Logo
10:29 pm - 11:16 am
SEA
-
EYW
9h 47m
1 stop
$434American Airlines
Fri, Apr 24 - Mon, May 4
American Airlines Logo
2:06 pm - 9:08 pm
EYW
-
SEA
10h 02m
1 stop
American Airlines Logo
12:59 am - 4:49 pm
SEA
-
EYW
12h 50m
2 stops
$435American Airlines
Thu, Feb 26 - Sun, Mar 1
American Airlines Logo
3:51 pm - 12:55 am
EYW
-
SEA
12h 04m
2 stops
American Airlines Logo
12:59 am - 7:15 pm
SEA
-
EYW
15h 16m
2 stops
$440American Airlines
Thu, Feb 26 - Sun, Mar 1

United Airlines flights from Key West to Seattle

Our best United Airlines deals on Key West to Seattle flight tickets
United Airlines
Feb 26
EYW3:56 pmKey West
9h 47m
1 stop
SEA10:43 pmSeattle/Tacoma Intl
Mar 2
SEA11:35 pmSeattle/Tacoma Intl
10h 40m
1 stop
EYW1:15 pmKey West
$429
United Airlines
Mar 2
EYW2:15 pmKey West
12h 36m
1 stop
SEA11:51 pmSeattle/Tacoma Intl
Mar 9
SEA11:59 pmSeattle/Tacoma Intl
10h 24m
1 stop
EYW1:23 pmKey West
$449
United Airlines
Mar 2
EYW2:15 pmKey West
12h 36m
1 stop
SEA11:51 pmSeattle/Tacoma Intl
Mar 9
SEA5:20 pmSeattle/Tacoma Intl
17h 03m
2 stops
EYW1:23 pmKey West
$454

American Airlines flights from Key West to Seattle

Our best American Airlines deals on Key West to Seattle flight tickets
American Airlines
Mar 4
EYW3:51 pmKey West
10h 49m
1 stop
SEA11:40 pmSeattle/Tacoma Intl
Mar 11
SEA5:30 amSeattle/Tacoma Intl
7h 54m
1 stop
EYW4:24 pmKey West
$329
American Airlines
Mar 4
EYW3:51 pmKey West
10h 49m
1 stop
SEA11:40 pmSeattle/Tacoma Intl
Mar 11
SEA7:21 amSeattle/Tacoma Intl
12h 16m
2 stops
EYW10:37 pmKey West
$334
American Airlines
Mar 4
EYW1:55 pmKey West
13h 29m
2 stops
SEA12:24 amSeattle/Tacoma Intl
Mar 11
SEA7:21 amSeattle/Tacoma Intl
12h 16m
2 stops
EYW10:37 pmKey West
$339

momondo 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, momondo users made 832,500 searches. Data last updated February 6, 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

Price

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Wed 3/4

3:51 pm-11:40 pm

1 stop10h 49m

Seattle/Tacoma Intl

Wed 3/11

5:30 am-4:24 pm

1 stop7h 54m

$329

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Wed 3/4

3:51 pm-11:40 pm

1 stop10h 49m

Seattle/Tacoma Intl

Wed 3/11

7:21 am-10:37 pm

2 stops12h 16m

$334

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Wed 3/4

1:55 pm-12:24 am

2 stops13h 29m

Seattle/Tacoma Intl

Wed 3/11

7:21 am-10:37 pm

2 stops12h 16m

$339

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Wed 2/18

12:55 pm-11:04 pm

2 stops13h 09m

Seattle/Tacoma Intl

Sun 2/22

5:37 am-4:24 pm

1 stop7h 47m

$394

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Wed 2/18

12:55 pm-11:04 pm

2 stops13h 09m

Seattle/Tacoma Intl

Sat 2/21

12:07 am-1:15 pm

2 stops10h 08m

$399

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Fri 4/24

6:19 pm-10:00 am

1 stop18h 41m

Seattle/Tacoma Intl

Mon 5/4

9:45 pm-10:50 am

1 stop10h 05m

$417

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Thu 2/26

3:56 pm-10:43 pm

1 stop9h 47m

Seattle/Tacoma Intl

Mon 3/2

11:35 pm-1:15 pm

1 stop10h 40m

$429

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Fri 4/24

4:20 pm-12:44 am

2 stops11h 24m

Seattle/Tacoma Intl

Mon 5/4

10:29 pm-11:16 am

1 stop9h 47m

$434

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Thu 2/26

2:06 pm-9:08 pm

1 stop10h 02m

Seattle/Tacoma Intl

Sun 3/1

12:59 am-4:49 pm

2 stops12h 50m

$435

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Thu 2/26

3:51 pm-12:55 am

2 stops12h 04m

Seattle/Tacoma Intl

Sun 3/1

12:59 am-7:15 pm

2 stops15h 16m

$440

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Key West to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

How have Key West to Seattle flight prices changed over time?

When to book flights from Key West to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Key West to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Key West to Seattle (EYW to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Key West to Seattle

Fastest flight time

8h 37m

Direct flights

None
The fastest flight from Key West to Seattle takes 8h 37m
There are no direct flights from Key West to Seattle. There are no popular flight routes from Key West to Seattle.
Search flight deals

  • How far is Key West to Seattle/Tacoma Intl by plane?

    The straight-line distance from Key West to Seattle/Tacoma Intl is 2719.2 mi. 8h 37m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Key West Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from Key West Airport to Seattle/Tacoma Intl Airport were last updated today.

  • How many operators does momondo search for flights from Key West Airport to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from Key West Airport to Seattle/Tacoma Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Key West Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The necessary travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Key West to Seattle?

Best airlines flying from Key West to Seattle

Compare and see reviews for airlines that fly from Key West to Seattle with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $278Free CancellationRating
7.2
11,246 reviews
Search American Airlines flights

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
SeaTac
Ocean Shores
Renton
Olympia
Lynnwood
Kent
Marysville
Redmond
Puyallup
Cle Elum
Tukwila
Lakewood
Federal Way
Westport
Kirkland
Centralia
Fife
Tumwater

Why use momondo?

Why should I use momondo to find a flight deal from Key West to Seattle?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Key West to Seattle. momondo saves you time and could save you money on your trip.

Can I find flights from Key West to Seattle with flexible booking policies on momondo?

momondo does allow users to show only those flights to Seattle from Key West which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Key West to Seattle?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Seattle from Key West.

I’m not ready to book a flight from Key West to Seattle right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Key West to Seattle flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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