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 April 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.

$273 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.

4:05 pm - 10:47 pm

EYW

SEA

9h 42m

1 stop

11:00 pm - 1:45 pm

SEA

EYW

11h 45m

1 stop

$449United Airlines

Wed, May 13 - Sun, May 17

3:58 pm - 12:44 am

EYW

SEA

11h 46m

2 stops

10:29 pm - 11:16 am

SEA

EYW

9h 47m

1 stop

$454American Airlines

Wed, May 13 - Sun, May 17

6:45 am - 3:51 pm

EYW

SEA

12h 06m

2 stops

11:33 pm - 1:21 pm

SEA

EYW

10h 48m

2 stops

$479American Airlines

Wed, May 13 - Sun, May 17

2:21 pm - 10:32 pm

EYW

SEA

11h 11m

1 stop

10:35 pm - 1:41 pm

SEA

EYW

12h 06m

1 stop

$561American Airlines

Fri, May 22 - Sun, May 31

2:21 pm - 10:32 pm

EYW

SEA

11h 11m

1 stop

10:35 pm - 1:07 pm

SEA

EYW

11h 32m

2 stops

$566American Airlines

Fri, May 22 - Sun, May 31

4:44 pm - 10:59 pm

EYW

SEA

9h 15m

1 stop

10:35 pm - 1:41 pm

SEA

EYW

12h 06m

1 stop

$680American Airlines

Fri, May 22 - Sun, May 31

4:44 pm - 12:59 am

EYW

SEA

11h 15m

2 stops

10:35 pm - 1:07 pm

SEA

EYW

11h 32m

2 stops

$690American Airlines

Fri, May 22 - Sun, May 31

4:44 pm - 12:59 am

EYW

SEA

11h 15m

2 stops

10:35 pm - 1:07 pm

SEA

EYW

11h 32m

2 stops

$728American Airlines

Fri, May 22 - Sun, May 31

11:28 am - 8:21 pm

EYW

SEA

11h 53m

2 stops

10:35 pm - 1:41 pm

SEA

EYW

12h 06m

1 stop

$802American Airlines

Fri, May 22 - Sun, May 31

4:44 pm - 12:59 am

EYW

SEA

11h 15m

2 stops

10:35 pm - 1:07 pm

SEA

EYW

11h 32m

2 stops

$945American Airlines

Fri, May 22 - Sun, May 31

American Airlines flights from Key West to Seattle

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

American Airlines

May 13

EYW3:58 pmKey West

11h 46m

2 stops

SEA12:44 amSeattle/Tacoma Intl

May 17

SEA10:29 pmSeattle/Tacoma Intl

9h 47m

1 stop

EYW11:16 amKey West

$454

American Airlines

May 13

EYW6:45 amKey West

12h 06m

2 stops

SEA3:51 pmSeattle/Tacoma Intl

May 17

SEA11:33 pmSeattle/Tacoma Intl

10h 48m

2 stops

EYW1:21 pmKey West

$479

American Airlines

May 22

EYW2:21 pmKey West

11h 11m

1 stop

SEA10:32 pmSeattle/Tacoma Intl

May 31

SEA5:15 amSeattle/Tacoma Intl

10h 34m

1 stop

EYW6:49 pmKey West

$561

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Wed 5/13

4:05 pm-10:47 pm

1 stop9h 42m

Seattle/Tacoma Intl

Sun 5/17

11:00 pm-1:45 pm

1 stop11h 45m

$449

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Wed 5/13

3:58 pm-12:44 am

2 stops11h 46m

Seattle/Tacoma Intl

Sun 5/17

10:29 pm-11:16 am

1 stop9h 47m

$454

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Wed 5/13

6:45 am-3:51 pm

2 stops12h 06m

Seattle/Tacoma Intl

Sun 5/17

11:33 pm-1:21 pm

2 stops10h 48m

$479

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Fri 5/22

2:21 pm-10:32 pm

1 stop11h 11m

Seattle/Tacoma Intl

Sun 5/31

10:35 pm-1:41 pm

1 stop12h 06m

$561

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Fri 5/22

2:21 pm-10:32 pm

1 stop11h 11m

Seattle/Tacoma Intl

Sun 5/31

10:35 pm-1:07 pm

2 stops11h 32m

$566

Quickest round-trip

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Fri 5/22

4:44 pm-10:59 pm

1 stop9h 15m

Seattle/Tacoma Intl

Sun 5/31

10:35 pm-1:41 pm

1 stop12h 06m

$680

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Fri 5/22

4:44 pm-12:59 am

2 stops11h 15m

Seattle/Tacoma Intl

Sun 5/31

10:35 pm-1:07 pm

2 stops11h 32m

$690

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Fri 5/22

4:44 pm-12:59 am

2 stops11h 15m

Seattle/Tacoma Intl

Sun 5/31

10:35 pm-1:07 pm

2 stops11h 32m

$728

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Fri 5/22

11:28 am-8:21 pm

2 stops11h 53m

Seattle/Tacoma Intl

Sun 5/31

10:35 pm-1:41 pm

1 stop12h 06m

$802

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Fri 5/22

4:44 pm-12:59 am

2 stops11h 15m

Seattle/Tacoma Intl

Sun 5/31

10:35 pm-1:07 pm

2 stops11h 32m

$945

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?

Delta 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	8h 40m
Direct flights	None

The fastest flight from Key West to Seattle takes 8h 40m

There are no direct flights from Key West to Seattle. There are no popular flight routes from Key West to Seattle.

Search flight deals

Frequently asked questions about flying from Key West to Seattle

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 40m 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 April 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 11,678 reviews		Search American Airlines flights

Tacoma

Leavenworth

SeaTac

Ocean Shores

Renton

Olympia

Lynnwood

Redmond

Kent

Marysville

Puyallup

Tukwila

Lakewood

Cle Elum

Federal Way

Centralia

Fife

Shoreline

Westport

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.