€223 Cheap Flights Seattle to Key West (SEA-EYW)

View €223 flight on Wed, 24 Dec 2025Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Key West Intl. Airport (EYW)

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Cheap flights from Seattle to Key West (SEA-EYW)

Prices were available within the past 7 days and start at €223 for one-way flights and €577 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Wed, 24 Dec - Mon, 5 Jan
SEA
Seattle
EYW
Key West
€577 Return, found 5 days ago
€577
Return
found 5 days ago
Select American Airlines flight, departing Wed, 24 Dec from Seattle to Key West, returning Mon, 5 Jan, priced at €577 found 5 days ago
American Airlines
Wed, 24 Dec - Mon, 5 Jan
SEA
Seattle
EYW
Key West
€581 Return, found 5 days ago
€581
Return
found 5 days ago
Select American Airlines flight, departing Wed, 24 Dec from Seattle to Key West, returning Mon, 5 Jan, priced at €581 found 5 days ago
American Airlines
Wed, 24 Dec - Mon, 5 Jan
SEA
Seattle
EYW
Key West
€610 Return, found 5 days ago
€610
Return
found 5 days ago
Select American Airlines flight, departing Wed, 24 Dec from Seattle to Key West, returning Mon, 5 Jan, priced at €610 found 5 days ago
American Airlines
Wed, 24 Dec - Mon, 5 Jan
SEA
Seattle
EYW
Key West
€614 Return, found 5 days ago
€614
Return
found 5 days ago
Select American Airlines flight, departing Wed, 24 Dec from Seattle to Key West, returning Mon, 5 Jan, priced at €614 found 5 days ago
American Airlines
Wed, 24 Dec - Mon, 5 Jan
SEA
Seattle
EYW
Key West
€619 Return, found 5 days ago
€619
Return
found 5 days ago
Select American Airlines flight, departing Wed, 24 Dec from Seattle to Key West, returning Mon, 5 Jan, priced at €619 found 5 days ago
American Airlines
Wed, 24 Dec - Mon, 5 Jan
SEA
Seattle
EYW
Key West
€636 Return, found 5 days ago
€636
Return
found 5 days ago
Select American Airlines flight, departing Wed, 24 Dec from Seattle to Key West, returning Mon, 5 Jan, priced at €636 found 5 days ago
American Airlines
Wed, 24 Dec - Mon, 5 Jan
SEA
Seattle
EYW
Key West
€640 Return, found 5 days ago
€640
Return
found 5 days ago
Select American Airlines flight, departing Wed, 24 Dec from Seattle to Key West, returning Mon, 5 Jan, priced at €640 found 5 days ago
American Airlines
Wed, 24 Dec - Mon, 5 Jan
SEA
Seattle
EYW
Key West
€647 Return, found 5 days ago
€647
Return
found 5 days ago
Select American Airlines flight, departing Wed, 24 Dec from Seattle to Key West, returning Mon, 5 Jan, priced at €647 found 5 days ago
Delta
Wed, 24 Dec - Mon, 5 Jan
SEA
Seattle
EYW
Key West
€841 Return, found 5 days ago
€841
Return
found 5 days ago
Select Delta flight, departing Wed, 24 Dec from Seattle to Key West, returning Mon, 5 Jan, priced at €841 found 5 days ago
United
Wed, 24 Dec - Mon, 5 Jan
SEA
Seattle
EYW
Key West
€1,026 Return, found 5 days ago
€1,026
Return
found 5 days ago
Select United flight, departing Wed, 24 Dec from Seattle to Key West, returning Mon, 5 Jan, priced at €1,026 found 5 days ago

Find the cheapest month to fly from Seattle (SEA) to Key West (EYW)

January is typically the cheapest month to fly

From €238 - €583 per traveller.

Graph displaying average flight prices per month

Seattle to Key West route information
Origin airport
Seattle - Tacoma Intl.
Destination airport
Key West Intl.
Return price
€576
Distance
4347 km

Perfect flights from Seattle to Key West

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from Seattle to Key West. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of , surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Seattle - Tacoma Intl. to Key West Intl. ticket options cater to your travel preferences, with incredible one-way fares from €223 and roundtrip prices from €577. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at Key West Intl. and explore and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your to travel arrangements today and embark on the journey of a lifetime in Key West.

Frequently asked questions

How much is a flight from SEA to Key West Intl. Airport?
Round-trip journeys between Seattle - Tacoma Intl. Airport (SEA) and Key West Intl. Airport (EYW) start from €577. This is based on fares advertised within the last 7 days on Expedia for flights departing within the next year — make your booking ASAP so you don't miss out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from SEA to Key West Intl. Airport?
This can differ between air carriers, as each one has its own terms and conditions. Visit the Customer Service Portal, where there are easy instructions on how to cancel your flight online.
How do I find cheap flights from Seattle - Tacoma Intl. Airport (SEA) to EYW that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Sea-Tac Airport to EYW flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Seattle - Tacoma Intl. Airport (SEA) to Key West Intl. Airport (EYW)?
You'll have 4,400 kilometres to cover on the long-haul SeaTac to Key West route. Wear comfortable clothes and consider taking a neck pillow with you.
Which airlines fly direct from Seattle - Tacoma Intl. Airport (SEA) to Key West Intl. Airport (EYW)?
If you want to fly straight from SEA to EYW, you'll need to book a flight with one or more stops. Unfortunately, there aren't any airlines that fly directly between these airports.
Are Sea-Tac Airport to EYW flight tickets cheaper when they're purchased at the last minute?
Last-minute bookings from SEA to Key West Intl. Airport (EYW) can be hit-or-miss. You may be able to score a bargain, but you could also miss out completely! If you'd rather play it safe and start your trip planning early, Expedia compares flight deals up to 12 months in advance. Just remember that not all airlines advertise their prices that far in advance. Our suggestion? Check back often as updates are made regularly.

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