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?

The number of operators available for flights from Key West Airport to Seattle/Tacoma Intl Airport is 1 as of March 2026.

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.

$177 Cheap Flights from Key West to Seattle in 2026

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Find the cheapest flights from Key West to Seattle

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:33 am - 3:25 pm

EYW

SEA

10h 52m

1 stop

11:15 pm - 10:46 am

SEA

EYW

8h 31m

1 stop

$389Delta

Fri, Apr 24 - Sun, May 3

2:01 pm - 9:04 pm

EYW

SEA

10h 03m

1 stop

12:59 am - 4:30 pm

SEA

EYW

12h 31m

2 stops

$394American Airlines

Fri, Apr 24 - Sat, May 2

3:58 pm - 12:44 am

EYW

SEA

11h 46m

2 stops

12:59 am - 4:30 pm

SEA

EYW

12h 31m

2 stops

$399American Airlines

Fri, Apr 24 - Sat, May 2

6:23 pm - 11:53 pm

EYW

SEA

8h 30m

1 stop

9:45 pm - 10:46 am

SEA

EYW

10h 01m

1 stop

$414Delta

Tue, Apr 14 - Tue, Apr 21

11:56 am - 6:44 pm

EYW

SEA

9h 48m

1 stop

6:00 am - 5:02 pm

SEA

EYW

8h 02m

1 stop

$467American Airlines

Tue, Apr 14 - Tue, Apr 21

2:29 pm - 10:58 pm

EYW

SEA

11h 29m

2 stops

6:00 am - 5:02 pm

SEA

EYW

8h 02m

1 stop

$472American Airlines

Tue, Apr 14 - Tue, Apr 21

6:46 pm - 10:14 am

EYW

SEA

18h 28m

1 stop

7:09 am - 6:49 pm

SEA

EYW

8h 40m

1 stop

$496American Airlines

Fri, Apr 24 - Sun, May 3

4:44 pm - 10:59 pm

EYW

SEA

9h 15m

1 stop

5:10 am - 4:52 pm

SEA

EYW

8h 42m

1 stop

$498American Airlines

Tue, Jun 23 - Tue, Jun 30

2:29 pm - 10:58 pm

EYW

SEA

11h 29m

2 stops

6:00 am - 5:02 pm

SEA

EYW

8h 02m

1 stop

$531American Airlines

Tue, Apr 14 - Tue, Apr 21

3:52 pm - 12:34 am

EYW

SEA

11h 42m

1 stop

5:00 am - 3:57 pm

SEA

EYW

31h 57m

2 stops

$564United Airlines

Thu, Apr 16 - Sun, Apr 19

United Airlines flights from Key West to Seattle

Our best United Airlines deals on Key West to Seattle flight tickets

United Airlines

Apr 16

EYW3:52 pmKey West

11h 42m

1 stop

SEA12:34 amSeattle/Tacoma Intl

Apr 19

SEA5:00 amSeattle/Tacoma Intl

31h 57m

2 stops

EYW3:57 pmKey West

$564

United Airlines

Apr 16

EYW4:38 pmKey West

9h 34m

1 stop

SEA11:12 pmSeattle/Tacoma Intl

Apr 19

SEA7:05 pmSeattle/Tacoma Intl

17h 52m

2 stops

EYW3:57 pmKey West

$594

United Airlines

Apr 14

EYW4:38 pmKey West

30h 14m

2 stops

SEA7:52 pmSeattle/Tacoma Intl

Apr 21

SEA8:55 amSeattle/Tacoma Intl

28h 02m

2 stops

EYW3:57 pmKey West

$596

Delta flights from Key West to Seattle

Our best Delta deals on Key West to Seattle flight tickets

Delta

Apr 24

EYW7:33 amKey West

10h 52m

1 stop

SEA3:25 pmSeattle/Tacoma Intl

May 3

SEA11:15 pmSeattle/Tacoma Intl

8h 31m

1 stop

EYW10:46 amKey West

$389

Delta

Apr 14

EYW6:23 pmKey West

8h 30m

1 stop

SEA11:53 pmSeattle/Tacoma Intl

Apr 21

SEA9:45 pmSeattle/Tacoma Intl

10h 01m

1 stop

EYW10:46 amKey West

$414

Delta

May 7

EYW7:30 amKey West

9h 54m

1 stop

SEA2:24 pmSeattle/Tacoma Intl

May 14

SEA11:35 pmSeattle/Tacoma Intl

9h 52m

1 stop

EYW12:27 pmKey West

$551

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Fri 4/24

7:33 am-3:25 pm

1 stop10h 52m

Seattle/Tacoma Intl

Sun 5/3

11:15 pm-10:46 am

1 stop8h 31m

$389

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Fri 4/24

2:01 pm-9:04 pm

1 stop10h 03m

Seattle/Tacoma Intl

Sat 5/2

12:59 am-4:30 pm

2 stops12h 31m

$394

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Fri 4/24

3:58 pm-12:44 am

2 stops11h 46m

Seattle/Tacoma Intl

Sat 5/2

12:59 am-4:30 pm

2 stops12h 31m

$399

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

9:45 pm-10:46 am

1 stop10h 01m

$414

Quickest round-trip

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Tue 4/14

11:56 am-6:44 pm

1 stop9h 48m

Seattle/Tacoma Intl

Tue 4/21

6:00 am-5:02 pm

1 stop8h 02m

$467

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Tue 4/14

2:29 pm-10:58 pm

2 stops11h 29m

Seattle/Tacoma Intl

Tue 4/21

6:00 am-5:02 pm

1 stop8h 02m

$472

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Fri 4/24

6:46 pm-10:14 am

1 stop18h 28m

Seattle/Tacoma Intl

Sun 5/3

7:09 am-6:49 pm

1 stop8h 40m

$496

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Tue 6/23

4:44 pm-10:59 pm

1 stop9h 15m

Seattle/Tacoma Intl

Tue 6/30

5:10 am-4:52 pm

1 stop8h 42m

$498

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Tue 4/14

2:29 pm-10:58 pm

2 stops11h 29m

Seattle/Tacoma Intl

Tue 4/21

6:00 am-5:02 pm

1 stop8h 02m

$531

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Thu 4/16

3:52 pm-12:34 am

1 stop11h 42m

Seattle/Tacoma Intl

Sun 4/19

5:00 am-3:57 pm

2 stops31h 57m

$564

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first

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

What is the cheapest airline that flies from Key West to Seattle/Tacoma Intl?

United Airlines is the most popular carrier operating from Key West to Seattle/Tacoma Intl

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	10h 52m
Direct flights	None

The fastest flight from Key West to Seattle takes 10h 52m

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. 10h 52m 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?
The number of operators available for flights from Key West Airport to Seattle/Tacoma Intl Airport is 1 as of March 2026.
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?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Key West to Seattle is American Airlines (100% of total bookings).

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 Airlines	PriceFrom $308	Free Cancellation	Rating 7.1 11,488 reviews		Search American Airlines flights

Tacoma

Leavenworth

SeaTac

Ocean Shores

Renton

Olympia

Lynnwood

Kent

Redmond

Marysville

Puyallup

Cle Elum

Lakewood

Tukwila

Federal Way

Fife

Westport

Centralia

Kirkland

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.