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 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.

$469 Cheap Flights from Key West to Seattle in 2026

Discover deals from 900+ travel sites with momondo.

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.

4:00 pm - 10:56 pm

EYW

SEA

9h 56m

1 stop

11:00 pm - 1:30 pm

SEA

EYW

11h 30m

1 stop

$469United Airlines

Thu, Jun 25 - Mon, Jun 29

1:50 pm - 9:59 pm

EYW

SEA

11h 09m

1 stop

8:21 pm - 9:44 am

SEA

EYW

10h 23m

1 stop

$482American Airlines

Thu, Aug 6 - Tue, Aug 18

1:50 pm - 9:59 pm

EYW

SEA

11h 09m

1 stop

5:10 am - 4:18 pm

SEA

EYW

8h 08m

1 stop

$535American Airlines

Fri, Aug 7 - Mon, Aug 17

1:50 pm - 9:59 pm

EYW

SEA

11h 09m

1 stop

8:21 pm - 9:44 am

SEA

EYW

10h 23m

1 stop

$554American Airlines

Thu, Aug 6 - Tue, Aug 18

6:15 pm - 11:57 pm

EYW

SEA

8h 42m

1 stop

6:00 am - 5:20 pm

SEA

EYW

8h 20m

1 stop

$599Delta

Fri, Aug 7 - Mon, Aug 17

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 18

10:15 am - 6:47 pm

EYW

SEA

11h 32m

2 stops

8:21 pm - 9:44 am

SEA

EYW

10h 23m

1 stop

$627American Airlines

Thu, Aug 6 - Tue, Aug 18

1:01 pm - 8:14 pm

EYW

SEA

10h 13m

1 stop

5:10 am - 4:52 pm

SEA

EYW

8h 42m

1 stop

$649American Airlines

Fri, Jun 26 - Tue, Jun 30

1:41 pm - 10:26 pm

EYW

SEA

11h 45m

2 stops

5:10 am - 4:18 pm

SEA

EYW

8h 08m

1 stop

$680American Airlines

Fri, Aug 7 - Mon, Aug 17

4:41 pm - 11:00 pm

EYW

SEA

9h 19m

1 stop

5:10 am - 6:48 pm

SEA

EYW

10h 38m

1 stop

$681American Airlines

Mon, Jul 13 - Sun, Jul 19

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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

Aug 6

EYW1:50 pmKey West

11h 09m

1 stop

SEA9:59 pmSeattle/Tacoma Intl

Aug 18

SEA8:21 pmSeattle/Tacoma Intl

10h 23m

1 stop

EYW9:44 amKey West

$482

American Airlines

Aug 7

EYW1:50 pmKey West

11h 09m

1 stop

SEA9:59 pmSeattle/Tacoma Intl

Aug 17

SEA5:10 amSeattle/Tacoma Intl

8h 08m

1 stop

EYW4:18 pmKey West

$535

American Airlines

Aug 6

EYW1:50 pmKey West

11h 09m

1 stop

SEA9:59 pmSeattle/Tacoma Intl

Aug 18

SEA8:21 pmSeattle/Tacoma Intl

10h 23m

1 stop

EYW9:44 amKey West

$554

United Airlines flights from Key West to Seattle

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

United Airlines

Jun 25

EYW4:00 pmKey West

9h 56m

1 stop

SEA10:56 pmSeattle/Tacoma Intl

Jun 29

SEA11:00 pmSeattle/Tacoma Intl

11h 30m

1 stop

EYW1:30 pmKey West

$469

United Airlines

Aug 6

EYW2:26 pmKey West

20h 34m

2 stops

SEA8:00 amSeattle/Tacoma Intl

Aug 18

SEA12:10 pmSeattle/Tacoma Intl

22h 19m

3 stops

EYW1:29 pmKey West

$904

United Airlines

Aug 7

EYW4:00 pmKey West

30h 38m

2 stops

SEA7:38 pmSeattle/Tacoma Intl

Aug 17

SEA12:10 pmSeattle/Tacoma Intl

22h 19m

3 stops

EYW1:29 pmKey West

$958

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Thu 6/25

4:00 pm-10:56 pm

1 stop9h 56m

Seattle/Tacoma Intl

Mon 6/29

11:00 pm-1:30 pm

1 stop11h 30m

$469

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Thu 8/6

1:50 pm-9:59 pm

1 stop11h 09m

Seattle/Tacoma Intl

Tue 8/18

8:21 pm-9:44 am

1 stop10h 23m

$482

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Fri 8/7

1:50 pm-9:59 pm

1 stop11h 09m

Seattle/Tacoma Intl

Mon 8/17

5:10 am-4:18 pm

1 stop8h 08m

$535

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Thu 8/6

1:50 pm-9:59 pm

1 stop11h 09m

Seattle/Tacoma Intl

Tue 8/18

8:21 pm-9:44 am

1 stop10h 23m

$554

Quickest round-trip

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Fri 8/7

6:15 pm-11:57 pm

1 stop8h 42m

Seattle/Tacoma Intl

Mon 8/17

6:00 am-5:20 pm

1 stop8h 20m

$599

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Thu 8/6

1:50 pm-9:59 pm

1 stop11h 09m

Seattle/Tacoma Intl

Tue 8/18

5:00 am-6:31 pm

2 stops10h 31m

$604

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Thu 8/6

10:15 am-6:47 pm

2 stops11h 32m

Seattle/Tacoma Intl

Tue 8/18

8:21 pm-9:44 am

1 stop10h 23m

$627

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Fri 6/26

1:01 pm-8:14 pm

1 stop10h 13m

Seattle/Tacoma Intl

Tue 6/30

5:10 am-4:52 pm

1 stop8h 42m

$649

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Fri 8/7

1:41 pm-10:26 pm

2 stops11h 45m

Seattle/Tacoma Intl

Mon 8/17

5:10 am-4:18 pm

1 stop8h 08m

$680

Key WestSeattle

EYW - SEA

EYWSEA

Key West

Mon 7/13

4:41 pm-11:00 pm

1 stop9h 19m

Seattle/Tacoma Intl

Sun 7/19

5:10 am-6:48 pm

1 stop10h 38m

$681

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 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 11,654 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

Lakewood

Puyallup

Tukwila

Marysville

Cle Elum

Federal Way

Fife

Centralia

Shoreline

Westport

Kirkland

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.