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 June 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.

$298 Cheap Flights from Key West to Seattle in 2026

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

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.

6:15 pm - 11:57 pm

EYW

SEA

8h 42m

1 stop

11:59 pm - 10:50 am

SEA

EYW

7h 51m

1 stop

$514Delta

Thu, Aug 6 - Tue, Aug 11

1:50 pm - 9:59 pm

EYW

SEA

11h 09m

1 stop

5:00 am - 6:31 pm

SEA

EYW

10h 31m

2 stops

$604American Airlines

Thu, Aug 6 - Tue, Aug 11

1:01 pm - 8:25 pm

EYW

SEA

10h 24m

1 stop

5:10 am - 6:48 pm

SEA

EYW

10h 38m

1 stop

$608American Airlines

Fri, Jul 17 - Fri, Jul 24

1:01 pm - 8:25 pm

EYW

SEA

10h 24m

1 stop

5:10 am - 6:48 pm

SEA

EYW

10h 38m

1 stop

$614American Airlines

Tue, Jul 14 - Thu, Jul 23

1:01 pm - 8:25 pm

EYW

SEA

10h 24m

1 stop

5:10 am - 5:21 pm

SEA

EYW

9h 11m

1 stop

$645American Airlines

Mon, Jul 20 - Sat, Jul 25

1:47 pm - 10:26 pm

EYW

SEA

11h 39m

2 stops

5:10 am - 6:48 pm

SEA

EYW

10h 38m

1 stop

$678American Airlines

Tue, Jul 14 - Thu, Jul 23

1:47 pm - 11:00 pm

EYW

SEA

12h 13m

2 stops

5:10 am - 6:48 pm

SEA

EYW

10h 38m

1 stop

$679American Airlines

Fri, Jul 17 - Fri, Jul 24

4:41 pm - 11:00 pm

EYW

SEA

9h 19m

1 stop

5:10 am - 6:48 pm

SEA

EYW

10h 38m

1 stop

$682American Airlines

Thu, Jul 16 - Thu, Jul 23

1:47 pm - 12:57 am

EYW

SEA

14h 10m

2 stops

5:10 am - 6:48 pm

SEA

EYW

10h 38m

1 stop

$715American Airlines

Mon, Jul 20 - Sat, Jul 25

1:47 pm - 11:00 pm

EYW

SEA

12h 13m

2 stops

5:05 am - 7:06 pm

SEA

EYW

11h 01m

2 stops

$749American Airlines

Tue, Jul 14 - Thu, Jul 23

Delta flights from Key West to Seattle

Our best Delta deals on Key West to Seattle flight tickets

Delta

Aug 6

EYW6:15 pmKey West

8h 42m

1 stop

SEA11:57 pmSeattle/Tacoma Intl

Aug 11

SEA11:59 pmSeattle/Tacoma Intl

7h 51m

1 stop

EYW10:50 amKey West

$514

Delta

Jul 16

EYW7:50 amKey West

11h 48m

2 stops

SEA4:38 pmSeattle/Tacoma Intl

Jul 23

SEA8:35 amSeattle/Tacoma Intl

8h 16m

1 stop

EYW7:51 pmKey West

$875

Delta

Jul 16

EYW7:50 amKey West

11h 48m

2 stops

SEA4:38 pmSeattle/Tacoma Intl

Jul 23

SEA5:30 amSeattle/Tacoma Intl

11h 21m

2 stops

EYW7:51 pmKey West

$1,437

American Airlines flights from Key West to Seattle

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

American Airlines

Aug 6

EYW1:50 pmKey West

11h 09m

1 stop

SEA9:59 pmSeattle/Tacoma Intl

Aug 11

SEA5:00 amSeattle/Tacoma Intl

10h 31m

2 stops

EYW6:31 pmKey West

$604

American Airlines

Jul 17

EYW1:01 pmKey West

10h 24m

1 stop

SEA8:25 pmSeattle/Tacoma Intl

Jul 24

SEA5:10 amSeattle/Tacoma Intl

10h 38m

1 stop

EYW6:48 pmKey West

$608

American Airlines

Jul 14

EYW1:01 pmKey West

10h 24m

1 stop

SEA8:25 pmSeattle/Tacoma Intl

Jul 23

SEA5:10 amSeattle/Tacoma Intl

10h 38m

1 stop

EYW6:48 pmKey West

$614

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Thu 8/6

6:15 pm-11:57 pm

1 stop8h 42m

Seattle/Tacoma Intl

Tue 8/11

11:59 pm-10:50 am

1 stop7h 51m

$514

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Thu 8/6

1:50 pm-9:59 pm

1 stop11h 09m

Seattle/Tacoma Intl

Tue 8/11

5:00 am-6:31 pm

2 stops10h 31m

$604

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Fri 7/17

1:01 pm-8:25 pm

1 stop10h 24m

Seattle/Tacoma Intl

Fri 7/24

5:10 am-6:48 pm

1 stop10h 38m

$608

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Tue 7/14

1:01 pm-8:25 pm

1 stop10h 24m

Seattle/Tacoma Intl

Thu 7/23

5:10 am-6:48 pm

1 stop10h 38m

$614

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Mon 7/20

1:01 pm-8:25 pm

1 stop10h 24m

Seattle/Tacoma Intl

Sat 7/25

5:10 am-5:21 pm

1 stop9h 11m

$645

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Tue 7/14

1:47 pm-10:26 pm

2 stops11h 39m

Seattle/Tacoma Intl

Thu 7/23

5:10 am-6:48 pm

1 stop10h 38m

$678

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Fri 7/17

1:47 pm-11:00 pm

2 stops12h 13m

Seattle/Tacoma Intl

Fri 7/24

5:10 am-6:48 pm

1 stop10h 38m

$679

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Thu 7/16

4:41 pm-11:00 pm

1 stop9h 19m

Seattle/Tacoma Intl

Thu 7/23

5:10 am-6:48 pm

1 stop10h 38m

$682

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Mon 7/20

1:47 pm-12:57 am

2 stops14h 10m

Seattle/Tacoma Intl

Sat 7/25

5:10 am-6:48 pm

1 stop10h 38m

$715

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Tue 7/14

1:47 pm-11:00 pm

2 stops12h 13m

Seattle/Tacoma Intl

Thu 7/23

5:05 am-7:06 pm

2 stops11h 01m

$749

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 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 and United 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

Fastest flight time	8h 42m
Direct flights	None

The fastest flight from Key West to Seattle takes 8h 42m

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 42m 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 June 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 11,640 reviews		Search American Airlines flights

Tacoma

Leavenworth

SeaTac

Ocean Shores

Renton

Olympia

Lynnwood

Redmond

Kent

Lakewood

Tukwila

Puyallup

Marysville

Cle Elum

Federal Way

Fife

Centralia

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.