How do I get Price Alerts for flights from Key West to Seattle?

You can take advantage of momondo’s Price Alerts by first searching for your flights to Key West from Seattle . Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

How can I save money on flights from Key West to Seattle with momondo?

Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore” . Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

How does momondo find its flight prices?

We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

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 May 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.

$487 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.

1:47 pm - 11:00 pm

EYW

SEA

12h 13m

2 stops

5:10 am - 6:48 pm

SEA

EYW

10h 38m

1 stop

$487American Airlines

Fri, Jul 17 - Wed, Jul 22

2:26 pm - 11:44 pm

EYW

SEA

12h 18m

1 stop

11:00 pm - 1:30 pm

SEA

EYW

11h 30m

1 stop

$494United Airlines

Wed, Jul 15 - Thu, Jul 23

4:41 pm - 11:00 pm

EYW

SEA

9h 19m

1 stop

10:35 pm - 1:40 pm

SEA

EYW

12h 05m

1 stop

$540American Airlines

Wed, Jul 15 - Thu, Jul 23

11:28 am - 9:05 pm

EYW

SEA

12h 37m

2 stops

10:35 pm - 1:40 pm

SEA

EYW

12h 05m

1 stop

$545American Airlines

Wed, Jul 15 - Thu, Jul 23

1:47 pm - 11:00 pm

EYW

SEA

12h 13m

2 stops

5:05 am - 6:48 pm

SEA

EYW

10h 43m

2 stops

$550American Airlines

Fri, Jul 17 - Wed, Jul 22

4:41 pm - 11:00 pm

EYW

SEA

9h 19m

1 stop

5:10 am - 6:48 pm

SEA

EYW

10h 38m

1 stop

$554American Airlines

Thu, Jul 16 - Wed, Jul 22

4:41 pm - 12:57 am

EYW

SEA

11h 16m

2 stops

5:10 am - 6:48 pm

SEA

EYW

10h 38m

1 stop

$559American Airlines

Thu, Jul 16 - Wed, Jul 22

4:21 pm - 12:59 am

EYW

SEA

11h 38m

1 stop

7:10 am - 6:48 pm

SEA

EYW

8h 38m

1 stop

$574American Airlines

Fri, Jul 17 - Wed, Jul 22

11:28 am - 9:05 pm

EYW

SEA

12h 37m

2 stops

5:05 am - 7:06 pm

SEA

EYW

11h 01m

2 stops

$622American Airlines

Wed, Jul 15 - Thu, Jul 23

4:05 pm - 12:14 am

EYW

SEA

11h 09m

1 stop

10:45 pm - 2:02 pm

SEA

EYW

12h 17m

1 stop

$636United Airlines

Wed, Oct 28 - Sat, Oct 31

United Airlines flights from Key West to Seattle

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

United Airlines

Jul 15

EYW2:26 pmKey West

12h 18m

1 stop

SEA11:44 pmSeattle/Tacoma Intl

Jul 23

SEA11:00 pmSeattle/Tacoma Intl

11h 30m

1 stop

EYW1:30 pmKey West

$494

United Airlines

Oct 28

EYW4:05 pmKey West

11h 09m

1 stop

SEA12:14 amSeattle/Tacoma Intl

Oct 31

SEA10:45 pmSeattle/Tacoma Intl

12h 17m

1 stop

EYW2:02 pmKey West

$636

United Airlines

Oct 28

EYW4:05 pmKey West

11h 09m

1 stop

SEA12:14 amSeattle/Tacoma Intl

Oct 31

SEA11:40 pmSeattle/Tacoma Intl

13h 26m

1 stop

EYW3:06 pmKey West

$661

American Airlines flights from Key West to Seattle

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

American Airlines

Jul 17

EYW1:47 pmKey West

12h 13m

2 stops

SEA11:00 pmSeattle/Tacoma Intl

Jul 22

SEA5:10 amSeattle/Tacoma Intl

10h 38m

1 stop

EYW6:48 pmKey West

$487

American Airlines

Jul 15

EYW4:41 pmKey West

9h 19m

1 stop

SEA11:00 pmSeattle/Tacoma Intl

Jul 23

SEA10:35 pmSeattle/Tacoma Intl

12h 05m

1 stop

EYW1:40 pmKey West

$540

American Airlines

Jul 15

EYW11:28 amKey West

12h 37m

2 stops

SEA9:05 pmSeattle/Tacoma Intl

Jul 23

SEA10:35 pmSeattle/Tacoma Intl

12h 05m

1 stop

EYW1:40 pmKey West

$545

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Fri 7/17

1:47 pm-11:00 pm

2 stops12h 13m

Seattle/Tacoma Intl

Wed 7/22

5:10 am-6:48 pm

1 stop10h 38m

$487

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Wed 7/15

2:26 pm-11:44 pm

1 stop12h 18m

Seattle/Tacoma Intl

Thu 7/23

11:00 pm-1:30 pm

1 stop11h 30m

$494

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Wed 7/15

4:41 pm-11:00 pm

1 stop9h 19m

Seattle/Tacoma Intl

Thu 7/23

10:35 pm-1:40 pm

1 stop12h 05m

$540

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Wed 7/15

11:28 am-9:05 pm

2 stops12h 37m

Seattle/Tacoma Intl

Thu 7/23

10:35 pm-1:40 pm

1 stop12h 05m

$545

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Fri 7/17

1:47 pm-11:00 pm

2 stops12h 13m

Seattle/Tacoma Intl

Wed 7/22

5:05 am-6:48 pm

2 stops10h 43m

$550

Quickest round-trip

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Thu 7/16

4:41 pm-11:00 pm

1 stop9h 19m

Seattle/Tacoma Intl

Wed 7/22

5:10 am-6:48 pm

1 stop10h 38m

$554

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Thu 7/16

4:41 pm-12:57 am

2 stops11h 16m

Seattle/Tacoma Intl

Wed 7/22

5:10 am-6:48 pm

1 stop10h 38m

$559

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Fri 7/17

4:21 pm-12:59 am

1 stop11h 38m

Seattle/Tacoma Intl

Wed 7/22

7:10 am-6:48 pm

1 stop8h 38m

$574

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Wed 7/15

11:28 am-9:05 pm

2 stops12h 37m

Seattle/Tacoma Intl

Thu 7/23

5:05 am-7:06 pm

2 stops11h 01m

$622

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Wed 10/28

4:05 pm-12:14 am

1 stop11h 09m

Seattle/Tacoma Intl

Sat 10/31

10:45 pm-2:02 pm

1 stop12h 17m

$636

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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.

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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 May 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 11,639 reviews		Search American Airlines flights

Frequently asked questions about flying from Key West to Seattle

How do I get Price Alerts for flights from Key West to Seattle?
You can take advantage of momondo’s Price Alerts by first searching for your flights to Key West from Seattle. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.
How can I save money on flights from Key West to Seattle with momondo?
Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.
How does momondo find its flight prices?
We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Tacoma

Leavenworth

SeaTac

Ocean Shores

Renton

Olympia

Lynnwood

Redmond

Kent

Puyallup

Lakewood

Tukwila

Marysville

Cle Elum

Federal Way

Fife

Centralia

Westport

Shoreline

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.