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

American Airlines and Delta are the most popular carriers operating from Key West to Seattle/Tacoma Intl

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 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.

$313 Cheap Flights from Key West to Seattle in 2026

Find the cheapest flights from Key West to Seattle

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

1:11 pm - 8:21 pmEYW Key West-SEA Seattle/Tacoma Intl

10h 10m1 stop Chicago O'Hare Intl

9:14 pm - 9:52 amSEA Seattle/Tacoma Intl-EYW Key West

9h 38m1 stop Miami

$492American Airlines

Tue, Nov 24 - Mon, Nov 30

6:05 pm - 11:57 pmEYW Key West-SEA Seattle/Tacoma Intl

8h 52m1 stop Atlanta Hartsfield-Jackson

9:20 pm - 8:02 pmSEA Seattle/Tacoma Intl-EYW Key West

19h 42m2 stops Los Angeles Atlanta Hartsfield-Jackson

$493Delta

Tue, Nov 24 - Tue, Dec 1

6:05 pm - 11:57 pmEYW Key West-SEA Seattle/Tacoma Intl

8h 52m1 stop Atlanta Hartsfield-Jackson

9:20 pm - 8:02 pmSEA Seattle/Tacoma Intl-EYW Key West

19h 42m2 stops Los Angeles Atlanta Hartsfield-Jackson

$546Delta

Mon, Nov 23 - Tue, Dec 1

4:43 pm - 11:59 pmEYW Key West-SEA Seattle/Tacoma Intl

10h 16m1 stop Miami

5:10 am - 4:54 pmSEA Seattle/Tacoma Intl-EYW Key West

8h 44m1 stop Dallas/Fort Worth

$549American Airlines

Tue, Nov 24 - Tue, Dec 1

6:05 pm - 11:57 pmEYW Key West-SEA Seattle/Tacoma Intl

8h 52m1 stop Atlanta Hartsfield-Jackson

6:00 am - 8:00 pmSEA Seattle/Tacoma Intl-EYW Key West

11h 00m1 stop Atlanta Hartsfield-Jackson

$577Delta

Tue, Nov 24 - Fri, Nov 27

2:15 pm - 8:07 pmEYW Key West-SEA Seattle/Tacoma Intl

8h 52m1 stop Charlotte Douglas

8:50 pm - 9:58 amSEA Seattle/Tacoma Intl-EYW Key West

10h 08m1 stop Miami

$586American Airlines

Tue, Sep 22 - Sat, Sep 26

6:05 pm - 11:57 pmEYW Key West-SEA Seattle/Tacoma Intl

8h 52m1 stop Atlanta Hartsfield-Jackson

11:59 pm - 10:48 amSEA Seattle/Tacoma Intl-EYW Key West

7h 49m1 stop Atlanta Hartsfield-Jackson

$599Delta

Tue, Nov 24 - Thu, Dec 3

4:43 pm - 11:59 pmEYW Key West-SEA Seattle/Tacoma Intl

10h 16m1 stop Miami

5:10 am - 4:55 pmSEA Seattle/Tacoma Intl-EYW Key West

8h 45m1 stop Dallas/Fort Worth

$602American Airlines

Mon, Nov 23 - Wed, Dec 2

2:06 pm - 2:55 pmEYW Key West-SEA Seattle/Tacoma Intl

27h 49m2 stops Atlanta Hartsfield-Jackson Salt Lake City

9:20 pm - 8:02 pmSEA Seattle/Tacoma Intl-EYW Key West

19h 42m2 stops Los Angeles Atlanta Hartsfield-Jackson

$611Delta

Thu, Nov 26 - Tue, Dec 1

7:25 am - 2:32 pmEYW Key West-SEA Seattle/Tacoma Intl

10h 07m1 stop Atlanta Hartsfield-Jackson

9:20 pm - 8:02 pmSEA Seattle/Tacoma Intl-EYW Key West

19h 42m2 stops Los Angeles Atlanta Hartsfield-Jackson

$613Delta

Thu, Nov 26 - Tue, Dec 1

Cheap last minute flights

Enter your travel dates to find the best prices.

2:20 pm - 11:36 pmEYW Key West-SEA Seattle/Tacoma Intl

12h 16m1 stop Newark

10:58 pm - 1:29 pmSEA Seattle/Tacoma Intl-EYW Key West

11h 31m1 stop Newark

$557United Airlines

Thu, Sep 10 - Tue, Sep 15

2:20 pm - 11:36 pmEYW Key West-SEA Seattle/Tacoma Intl

12h 16m1 stop Newark

10:58 pm - 1:29 pmSEA Seattle/Tacoma Intl-EYW Key West

11h 31m1 stop Newark

$559United Airlines

Fri, Sep 11 - Mon, Sep 14

2:15 pm - 8:07 pmEYW Key West-SEA Seattle/Tacoma Intl

8h 52m1 stop Charlotte Douglas

11:57 pm - 1:17 pmSEA Seattle/Tacoma Intl-EYW Key West

10h 20m2 stops Chicago O'Hare Intl Miami

$688American Airlines

Thu, Sep 10 - Tue, Sep 15

11:30 am - 7:48 pmEYW Key West-SEA Seattle/Tacoma Intl

11h 18m2 stops Miami Dallas/Fort Worth

11:57 pm - 1:17 pmSEA Seattle/Tacoma Intl-EYW Key West

10h 20m2 stops Chicago O'Hare Intl Miami

$759American Airlines

Thu, Sep 10 - Tue, Sep 15

1:47 pm - 9:52 pmEYW Key West-SEA Seattle/Tacoma Intl

11h 05m2 stops Miami Dallas/Fort Worth

6:40 am - 5:55 pmSEA Seattle/Tacoma Intl-EYW Key West

8h 15m1 stop Charlotte Douglas

$764American Airlines

Fri, Sep 11 - Mon, Sep 14

11:30 am - 9:52 pmEYW Key West-SEA Seattle/Tacoma Intl

13h 22m2 stops Miami Dallas/Fort Worth

11:57 pm - 1:11 pmSEA Seattle/Tacoma Intl-EYW Key West

10h 14m2 stops Chicago O'Hare Intl Charlotte Douglas

$835American Airlines

Fri, Sep 11 - Mon, Sep 14

2:20 pm - 11:36 pmEYW Key West-SEA Seattle/Tacoma Intl

12h 16m1 stop Newark

11:00 pm - 1:29 pmSEA Seattle/Tacoma Intl-EYW Key West

35h 29m2 stops Chicago O'Hare Intl Newark

$950United Airlines

Wed, Sep 9 - Fri, Sep 11

2:20 pm - 11:36 pmEYW Key West-SEA Seattle/Tacoma Intl

12h 16m1 stop Newark

10:58 pm - 1:28 pmSEA Seattle/Tacoma Intl-EYW Key West

11h 30m1 stop Newark

$985United Airlines

Wed, Sep 9 - Fri, Sep 11

11:30 am - 9:36 pmEYW Key West-SEA Seattle/Tacoma Intl

13h 06m2 stops Miami Chicago O'Hare Intl

8:50 pm - 9:51 amSEA Seattle/Tacoma Intl-EYW Key West

10h 01m1 stop Miami

$990American Airlines

Wed, Sep 9 - Fri, Sep 11

11:30 am - 9:52 pmEYW Key West-SEA Seattle/Tacoma Intl

13h 22m2 stops Miami Dallas/Fort Worth

10:45 pm - 1:17 pmSEA Seattle/Tacoma Intl-EYW Key West

11h 32m2 stops Philadelphia Miami

$995American Airlines

Wed, Sep 9 - Fri, Sep 11

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American Airlines flights from Key West to Seattle

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

American Airlines

Nov 24

EYW1:11 pmKey West

10h 10m

1 stop

SEA8:21 pmSeattle/Tacoma Intl

Nov 30

SEA9:14 pmSeattle/Tacoma Intl

9h 38m

1 stop

EYW9:52 amKey West

$492

American Airlines

Nov 24

EYW4:43 pmKey West

10h 16m

1 stop

SEA11:59 pmSeattle/Tacoma Intl

Dec 1

SEA5:10 amSeattle/Tacoma Intl

8h 44m

1 stop

EYW4:54 pmKey West

$549

American Airlines

Sep 22

EYW2:15 pmKey West

8h 52m

1 stop

SEA8:07 pmSeattle/Tacoma Intl

Sep 26

SEA8:50 pmSeattle/Tacoma Intl

10h 08m

1 stop

EYW9:58 amKey West

$586

Delta flights from Key West to Seattle

Our best Delta deals on Key West to Seattle flight tickets

Delta

Nov 24

EYW6:05 pmKey West

8h 52m

1 stop

SEA11:57 pmSeattle/Tacoma Intl

Dec 1

SEA9:20 pmSeattle/Tacoma Intl

19h 42m

2 stops

EYW8:02 pmKey West

$493

Delta

Nov 23

EYW6:05 pmKey West

8h 52m

1 stop

SEA11:57 pmSeattle/Tacoma Intl

Dec 1

SEA9:20 pmSeattle/Tacoma Intl

19h 42m

2 stops

EYW8:02 pmKey West

$546

Delta

Nov 24

EYW6:05 pmKey West

8h 52m

1 stop

SEA11:57 pmSeattle/Tacoma Intl

Nov 27

SEA6:00 amSeattle/Tacoma Intl

11h 00m

1 stop

EYW8:00 pmKey West

$577

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Key WestSeattle

EYW Key West - SEA Seattle/Tacoma Intl

EYWSEA

Key West

Tue 11/24

1:11 pm-8:21 pm

1 stop10h 10m

Seattle/Tacoma Intl

Mon 11/30

9:14 pm-9:52 am

1 stop9h 38m

$492

Key WestSeattle

EYW Key West - SEA Seattle/Tacoma Intl

EYWSEA

Key West

Tue 11/24

6:05 pm-11:57 pm

1 stop8h 52m

Seattle/Tacoma Intl

Tue 12/1

9:20 pm-8:02 pm

2 stops19h 42m

$493

Key WestSeattle

EYW Key West - SEA Seattle/Tacoma Intl

EYWSEA

Key West

Mon 11/23

6:05 pm-11:57 pm

1 stop8h 52m

Seattle/Tacoma Intl

Tue 12/1

9:20 pm-8:02 pm

2 stops19h 42m

$546

Key WestSeattle

EYW Key West - SEA Seattle/Tacoma Intl

EYWSEA

Key West

Tue 11/24

4:43 pm-11:59 pm

1 stop10h 16m

Seattle/Tacoma Intl

Tue 12/1

5:10 am-4:54 pm

1 stop8h 44m

$549

Key WestSeattle

EYW Key West - SEA Seattle/Tacoma Intl

EYWSEA

Key West

Tue 11/24

6:05 pm-11:57 pm

1 stop8h 52m

Seattle/Tacoma Intl

Fri 11/27

6:00 am-8:00 pm

1 stop11h 00m

$577

Key WestSeattle

EYW Key West - SEA Seattle/Tacoma Intl

EYWSEA

Key West

Tue 9/22

2:15 pm-8:07 pm

1 stop8h 52m

Seattle/Tacoma Intl

Sat 9/26

8:50 pm-9:58 am

1 stop10h 08m

$586

Quickest round-trip

Key WestSeattle

EYW Key West - SEA Seattle/Tacoma Intl

EYWSEA

Key West

Tue 11/24

6:05 pm-11:57 pm

1 stop8h 52m

Seattle/Tacoma Intl

Thu 12/3

11:59 pm-10:48 am

1 stop7h 49m

$599

Key WestSeattle

EYW Key West - SEA Seattle/Tacoma Intl

EYWSEA

Key West

Mon 11/23

4:43 pm-11:59 pm

1 stop10h 16m

Seattle/Tacoma Intl

Wed 12/2

5:10 am-4:55 pm

1 stop8h 45m

$602

Key WestSeattle

EYW Key West - SEA Seattle/Tacoma Intl

EYWSEA

Key West

Thu 11/26

2:06 pm-2:55 pm

2 stops27h 49m

Seattle/Tacoma Intl

Tue 12/1

9:20 pm-8:02 pm

2 stops19h 42m

$611

Key WestSeattle

EYW Key West - SEA Seattle/Tacoma Intl

EYWSEA

Key West

Thu 11/26

7:25 am-2:32 pm

1 stop10h 07m

Seattle/Tacoma Intl

Tue 12/1

9:20 pm-8:02 pm

2 stops19h 42m

$613

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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

Prices

Airlines

What is the cheapest month to fly to Seattle?

In general, October is the cheapest month to fly from Key West to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. If you don’t want to visit Seattle in October, then you should wait until May to fly from Key West, when ticket prices are also cheap, with an average price of $0.

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

Best Price Found	$313
Fastest flight time	8h 39m
Direct flights	None

The best one-way flight to Seattle from Key West in the past 72 hours is $313. The best round-trip flight deal from Key West to Seattle found on momondo in the last 72 hours is $492.

The fastest flight from Key West to Seattle takes 8h 39m

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 39m 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 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.

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Kent

Olympia

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Lakewood

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Fife

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Cle Elum

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Kirkland

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Lacey

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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.