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.

$265 Cheap Flights from Key West to Seattle in 2026/27

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.

12:22 pm - 7:06 pmEYW Key West-SEA Seattle/Tacoma Intl

9h 44m1 stop Chicago O'Hare Intl

11:44 pm - 11:41 amSEA Seattle/Tacoma Intl-EYW Key West

8h 57m1 stop Chicago O'Hare Intl

$419United Airlines

Mon, Dec 21 - Mon, Dec 28

4:04 pm - 10:32 pmEYW Key West-SEA Seattle/Tacoma Intl

9h 28m1 stop Chicago O'Hare Intl

11:44 pm - 11:41 amSEA Seattle/Tacoma Intl-EYW Key West

8h 57m1 stop Chicago O'Hare Intl

$549United Airlines

Sun, Dec 20 - Mon, Dec 28

4:10 pm - 11:59 pmEYW Key West-SEA Seattle/Tacoma Intl

10h 49m1 stop Chicago O'Hare Intl

11:15 pm - 1:52 pmSEA Seattle/Tacoma Intl-EYW Key West

11h 37m1 stop Newark

$566United Airlines

Fri, Oct 30 - Tue, Nov 3

5:52 pm - 11:58 pmEYW Key West-SEA Seattle/Tacoma Intl

33h 06m2 stops Chicago O'Hare Intl Los Angeles

11:44 pm - 11:41 amSEA Seattle/Tacoma Intl-EYW Key West

8h 57m1 stop Chicago O'Hare Intl

$662United Airlines

Sun, Dec 20 - Mon, Dec 28

5:28 pm - 11:38 pmEYW Key West-SEA Seattle/Tacoma Intl

9h 10m1 stop Miami

6:00 am - 6:01 pmSEA Seattle/Tacoma Intl-EYW Key West

9h 01m1 stop Charlotte Douglas

$681American Airlines

Sat, Oct 31 - Wed, Nov 4

5:28 pm - 11:59 pmEYW Key West-SEA Seattle/Tacoma Intl

9h 31m1 stop Miami

6:23 pm - 9:48 amSEA Seattle/Tacoma Intl-EYW Key West

12h 25m2 stops Phoenix Sky Harbor Intl Miami

$728American Airlines

Fri, Oct 30 - Tue, Nov 3

10:24 am - 9:57 pmEYW Key West-SEA Seattle/Tacoma Intl

14h 33m2 stops Miami Dallas/Fort Worth

6:00 am - 6:01 pmSEA Seattle/Tacoma Intl-EYW Key West

9h 01m1 stop Charlotte Douglas

$745American Airlines

Sat, Oct 31 - Wed, Nov 4

12:59 pm - 7:38 pmEYW Key West-SEA Seattle/Tacoma Intl

9h 39m1 stop Chicago O'Hare Intl

10:50 pm - 2:13 pmSEA Seattle/Tacoma Intl-EYW Key West

12h 23m1 stop Newark

$789United Airlines

Fri, Feb 5 - Tue, Feb 9

1:43 pm - 12:10 amEYW Key West-SEA Seattle/Tacoma Intl

13h 27m2 stops Miami Dallas/Fort Worth

6:23 pm - 9:48 amSEA Seattle/Tacoma Intl-EYW Key West

12h 25m2 stops Phoenix Sky Harbor Intl Miami

$799American Airlines

Fri, Oct 30 - Tue, Nov 3

5:52 pm - 2:22 pmEYW Key West-SEA Seattle/Tacoma Intl

23h 30m2 stops Chicago O'Hare Intl San Francisco

11:44 pm - 11:41 amSEA Seattle/Tacoma Intl-EYW Key West

8h 57m1 stop Chicago O'Hare Intl

$803United Airlines

Mon, Dec 21 - Mon, Dec 28

Cheap last minute flights

Enter your travel dates to find the best prices.

2:15 pm - 9:55 pmEYW Key West-SEA Seattle/Tacoma Intl

10h 40m1 stop Newark

10:48 pm - 1:54 pmSEA Seattle/Tacoma Intl-EYW Key West

12h 06m1 stop Newark

$725United Airlines

Wed, Oct 21 - Sat, Oct 24

2:15 pm - 5:37 pmEYW Key West-SEA Seattle/Tacoma Intl

30h 22m2 stops Newark Denver Intl

10:48 pm - 1:54 pmSEA Seattle/Tacoma Intl-EYW Key West

12h 06m1 stop Newark

$950United Airlines

Wed, Oct 21 - Sat, Oct 24

2:15 pm - 8:37 pmEYW Key West-SEA Seattle/Tacoma Intl

33h 22m3 stops Newark Chicago O'Hare Intl Washington, D.C. Dulles Intl

10:48 pm - 1:54 pmSEA Seattle/Tacoma Intl-EYW Key West

12h 06m1 stop Newark

$988United Airlines

Wed, Oct 21 - Sat, Oct 24

6:10 pm - 11:52 pmEYW Key West-SEA Seattle/Tacoma Intl

8h 42m1 stop Atlanta Hartsfield-Jackson

11:59 pm - 10:47 amSEA Seattle/Tacoma Intl-EYW Key West

7h 48m1 stop Atlanta Hartsfield-Jackson

$1,217Delta

Sun, Oct 25 - Wed, Oct 28

4:10 pm - 11:17 pmEYW Key West-SEA Seattle/Tacoma Intl

10h 07m1 stop Chicago O'Hare Intl

7:35 pm - 3:29 pmSEA Seattle/Tacoma Intl-EYW Key West

16h 54m2 stops San Francisco Chicago O'Hare Intl

$1,281United Airlines

Sun, Oct 25 - Wed, Oct 28

4:10 pm - 11:17 pmEYW Key West-SEA Seattle/Tacoma Intl

10h 07m1 stop Chicago O'Hare Intl

10:56 pm - 1:54 pmSEA Seattle/Tacoma Intl-EYW Key West

11h 58m2 stops Chicago O'Hare Intl Newark

$1,317United Airlines

Sun, Oct 25 - Wed, Oct 28

10:24 am - 8:15 pmEYW Key West-SEA Seattle/Tacoma Intl

12h 51m2 stops Miami Chicago O'Hare Intl

11:59 pm - 4:11 pmSEA Seattle/Tacoma Intl-EYW Key West

13h 12m2 stops Chicago O'Hare Intl Charlotte Douglas

$1,554American Airlines

Sun, Oct 25 - Wed, Oct 28

2:15 pm - 9:55 pmEYW Key West-SEA Seattle/Tacoma Intl

10h 40m1 stop Newark

10:48 pm - 1:54 pmSEA Seattle/Tacoma Intl-EYW Key West

12h 06m1 stop Newark

$1,867United Airlines

Wed, Oct 21 - Sat, Oct 24

2:15 pm - 4:03 pmEYW Key West-SEA Seattle/Tacoma Intl

28h 48m2 stops Newark Denver Intl

10:48 pm - 1:54 pmSEA Seattle/Tacoma Intl-EYW Key West

12h 06m1 stop Newark

$1,883United Airlines

Wed, Oct 21 - Sat, Oct 24

2:15 pm - 8:37 pmEYW Key West-SEA Seattle/Tacoma Intl

33h 22m3 stops Newark Chicago O'Hare Intl Washington, D.C. Dulles Intl

10:48 pm - 1:54 pmSEA Seattle/Tacoma Intl-EYW Key West

12h 06m1 stop Newark

$1,889United Airlines

Wed, Oct 21 - Sat, Oct 24

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United Airlines flights from Key West to Seattle

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

United Airlines

Dec 21

EYW12:22 pmKey West

9h 44m

1 stop

SEA7:06 pmSeattle/Tacoma Intl

Dec 28

SEA11:44 pmSeattle/Tacoma Intl

8h 57m

1 stop

EYW11:41 amKey West

$419

United Airlines

Dec 20

EYW4:04 pmKey West

9h 28m

1 stop

SEA10:32 pmSeattle/Tacoma Intl

Dec 28

SEA11:44 pmSeattle/Tacoma Intl

8h 57m

1 stop

EYW11:41 amKey West

$549

United Airlines

Oct 30

EYW4:10 pmKey West

10h 49m

1 stop

SEA11:59 pmSeattle/Tacoma Intl

Nov 3

SEA11:15 pmSeattle/Tacoma Intl

11h 37m

1 stop

EYW1:52 pmKey West

$566

American Airlines flights from Key West to Seattle

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

American Airlines

Oct 31

EYW5:28 pmKey West

9h 10m

1 stop

SEA11:38 pmSeattle/Tacoma Intl

Nov 4

SEA6:00 amSeattle/Tacoma Intl

9h 01m

1 stop

EYW6:01 pmKey West

$681

American Airlines

Oct 30

EYW5:28 pmKey West

9h 31m

1 stop

SEA11:59 pmSeattle/Tacoma Intl

Nov 3

SEA6:23 pmSeattle/Tacoma Intl

12h 25m

2 stops

EYW9:48 amKey West

$728

American Airlines

Oct 31

EYW10:24 amKey West

14h 33m

2 stops

SEA9:57 pmSeattle/Tacoma Intl

Nov 4

SEA6:00 amSeattle/Tacoma Intl

9h 01m

1 stop

EYW6:01 pmKey West

$745

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Key WestSeattle

EYW Key West - SEA Seattle/Tacoma Intl

EYWSEA

Key West

Mon 12/21

12:22 pm-7:06 pm

1 stop9h 44m

Seattle/Tacoma Intl

Mon 12/28

11:44 pm-11:41 am

1 stop8h 57m

$419

Key WestSeattle

EYW Key West - SEA Seattle/Tacoma Intl

EYWSEA

Key West

Sun 12/20

4:04 pm-10:32 pm

1 stop9h 28m

Seattle/Tacoma Intl

Mon 12/28

11:44 pm-11:41 am

1 stop8h 57m

$549

Key WestSeattle

EYW Key West - SEA Seattle/Tacoma Intl

EYWSEA

Key West

Fri 10/30

4:10 pm-11:59 pm

1 stop10h 49m

Seattle/Tacoma Intl

Tue 11/3

11:15 pm-1:52 pm

1 stop11h 37m

$566

Key WestSeattle

EYW Key West - SEA Seattle/Tacoma Intl

EYWSEA

Key West

Sun 12/20

5:52 pm-11:58 pm

2 stops33h 06m

Seattle/Tacoma Intl

Mon 12/28

11:44 pm-11:41 am

1 stop8h 57m

$662

Quickest round-trip

Key WestSeattle

EYW Key West - SEA Seattle/Tacoma Intl

EYWSEA

Key West

Sat 10/31

5:28 pm-11:38 pm

1 stop9h 10m

Seattle/Tacoma Intl

Wed 11/4

6:00 am-6:01 pm

1 stop9h 01m

$681

Key WestSeattle

EYW Key West - SEA Seattle/Tacoma Intl

EYWSEA

Key West

Fri 10/30

5:28 pm-11:59 pm

1 stop9h 31m

Seattle/Tacoma Intl

Tue 11/3

6:23 pm-9:48 am

2 stops12h 25m

$728

Key WestSeattle

EYW Key West - SEA Seattle/Tacoma Intl

EYWSEA

Key West

Sat 10/31

10:24 am-9:57 pm

2 stops14h 33m

Seattle/Tacoma Intl

Wed 11/4

6:00 am-6:01 pm

1 stop9h 01m

$745

Key WestSeattle

EYW Key West - SEA Seattle/Tacoma Intl

EYWSEA

Key West

Fri 2/5

12:59 pm-7:38 pm

1 stop9h 39m

Seattle/Tacoma Intl

Tue 2/9

10:50 pm-2:13 pm

1 stop12h 23m

$789

Key WestSeattle

EYW Key West - SEA Seattle/Tacoma Intl

EYWSEA

Key West

Fri 10/30

1:43 pm-12:10 am

2 stops13h 27m

Seattle/Tacoma Intl

Tue 11/3

6:23 pm-9:48 am

2 stops12h 25m

$799

Key WestSeattle

EYW Key West - SEA Seattle/Tacoma Intl

EYWSEA

Key West

Mon 12/21

5:52 pm-2:22 pm

2 stops23h 30m

Seattle/Tacoma Intl

Mon 12/28

11:44 pm-11:41 am

1 stop8h 57m

$803

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

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

American Airlines, Delta, and Alaska Airlines are the most popular carriers 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

Best Price Found	$265
Fastest flight time	9h 39m
Direct flights	None

The best one-way flight to Seattle from Key West in the past 72 hours is $265. The best round-trip flight deal from Key West to Seattle found on momondo in the last 72 hours is $419.

The fastest flight from Key West to Seattle takes 9h 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. 9h 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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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.