A coastal fortification with a clear blue sea and shallow coral reefs.

CA $436 Cheap Flights from Seattle (SEA) to Key West (EYW)

View CA $436 flight on Mon, Sep 14, 2026Opens 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 (SEA) to Key West (EYW)

Prices were available within the past 7 days and start at CA $436 for one-way flights and CA $777 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Aug 25 - Tue, Sep 1
SEA
Seattle
EYW
Key West
CA $777 Roundtrip, found 3 days ago
CA $777
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Aug 25 from Seattle to Key West, returning Tue, Sep 1, priced at CA $777 found 3 days ago
Delta
Tue, Aug 25 - Thu, Sep 3
SEA
Seattle
EYW
Key West
CA $859 Roundtrip, found 3 days ago
CA $859
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Aug 25 from Seattle to Key West, returning Thu, Sep 3, priced at CA $859 found 3 days ago
American Airlines
Fri, Aug 28 - Tue, Sep 1
SEA
Seattle
EYW
Key West
CA $874 Roundtrip, found 3 days ago
CA $874
Roundtrip
found 3 days ago
Select American Airlines flight, departing Fri, Aug 28 from Seattle to Key West, returning Tue, Sep 1, priced at CA $874 found 3 days ago
American Airlines
Fri, Aug 28 - Tue, Sep 1
SEA
Seattle
EYW
Key West
CA $917 Roundtrip, found 3 days ago
CA $917
Roundtrip
found 3 days ago
Select American Airlines flight, departing Fri, Aug 28 from Seattle to Key West, returning Tue, Sep 1, priced at CA $917 found 3 days ago
Delta
Fri, Aug 28 - Thu, Sep 3
SEA
Seattle
EYW
Key West
CA $956 Roundtrip, found 3 days ago
CA $956
Roundtrip
found 3 days ago
Select Delta flight, departing Fri, Aug 28 from Seattle to Key West, returning Thu, Sep 3, priced at CA $956 found 3 days ago
American Airlines
Fri, Aug 28 - Tue, Sep 1
SEA
Seattle
EYW
Key West
CA $957 Roundtrip, found 3 days ago
CA $957
Roundtrip
found 3 days ago
Select American Airlines flight, departing Fri, Aug 28 from Seattle to Key West, returning Tue, Sep 1, priced at CA $957 found 3 days ago
Delta
Fri, Aug 28 - Sun, Aug 30
SEA
Seattle
EYW
Key West
CA $971 Roundtrip, found 3 days ago
CA $971
Roundtrip
found 3 days ago
Select Delta flight, departing Fri, Aug 28 from Seattle to Key West, returning Sun, Aug 30, priced at CA $971 found 3 days ago
Delta
Thu, Aug 27 - Tue, Sep 1
SEA
Seattle
EYW
Key West
CA $990 Roundtrip, found 3 days ago
CA $990
Roundtrip
found 3 days ago
Select Delta flight, departing Thu, Aug 27 from Seattle to Key West, returning Tue, Sep 1, priced at CA $990 found 3 days ago
Delta
Mon, Aug 31 - Tue, Sep 1
SEA
Seattle
EYW
Key West
CA $1,002 Roundtrip, found 3 days ago
CA $1,002
Roundtrip
found 3 days ago
Select Delta flight, departing Mon, Aug 31 from Seattle to Key West, returning Tue, Sep 1, priced at CA $1,002 found 3 days ago
United
Fri, Aug 28 - Tue, Sep 1
SEA
Seattle
EYW
Key West
CA $1,289 Roundtrip, found 3 days ago
CA $1,289
Roundtrip
found 3 days ago
Select United flight, departing Fri, Aug 28 from Seattle to Key West, returning Tue, Sep 1, priced at CA $1,289 found 3 days ago

Alternative airports near Key West

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Key West Intl. EYW. Cheapest and Closest option available. Average driving time to city centre is 8 minutes. Flights from CA $874
EYW
Key West Intl.
CheapestClosest
Average driving time to city centre8 min
Flights from CA $874

Frequently asked questions

How much does a flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Key West, FL (EYW-Key West Intl.) cost?
You can find cheap one-way flights from CA $436 and cheap return flights from CA $777 SEA to EYW with Expedia. Return flights often range between CA$748 and CA$2353. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when SEA to EYW ticket fares go up or down.
What is the cheapest month to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Key West, FL (EYW-Key West Intl.)?
The cheapest months to fly from SEA to EYW are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Key West, FL (EYW-Key West Intl.)?
Enter SEA to EYW and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Key West, FL (EYW-Key West Intl.)?
American Airlines is one of the cheapest airlines offering connecting return flights from Seattle - Tacoma Intl. (SEA) to Key West Intl. (EYW), with a layover in Sky Harbor Intl. (PHX), with tickets starting from around CA$655 for flights that can be booked for departure within the next year. These prices are for economy/coach class per adult. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.
How do I find cheap flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Key West, FL (EYW-Key West Intl.)?
To find a cheap flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Key West, FL (EYW-Key West Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Key West, FL (EYW-Key West Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Key West, FL (EYW-Key West Intl.)?
There are approximately 39 connecting flights per day from Seattle - Tacoma Intl. (SEA) to Key West Intl. (EYW). Some common connection points include O'Hare Intl. (ORD), San Francisco Intl. (SFO), and Hartsfield-Jackson Atlanta Intl. (ATL).
What is the earliest flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Key West, FL (EYW-Key West Intl.)?
The earliest flight from Seattle - Tacoma Intl. (SEA) to Key West Intl. (EYW) typically departs around 12:05 AM local time, operated by American Airlines. This is a seasonal service, active only in February. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Key West, FL (EYW-Key West Intl.)?
You'll find the most flights from Seattle - Tacoma Intl. (SEA) to Key West Intl. (EYW) on Fridays, with around 24 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include United, American Airlines, and Delta. Fridays offer notably more flight options compared to other days of the week, so if flexibility is key, consider flying then.
What are the most popular departure times for flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Key West, FL (EYW-Key West Intl.)?
The most popular departure times for flights from Seattle - Tacoma Intl. (SEA) to Key West Intl. (EYW) are in the late evening, from 9pm to midnight. Many major carriers, including American Airlines, United and Delta, offer flights during this window. Many travelers prefer this because it allows you to maximize your day in Seattle before your flight and arrive in Key West ready to start your trip.
How long does it take to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Key West, FL (EYW-Key West Intl.)?
There are no nonstop flights from Seattle - Tacoma Intl. (SEA) to Key West Intl. (EYW). The shortest flights typically involve one stop, taking around 8 hours 18 minutes. These flights cover a distance of approximately 4,373 kilometers. If you opt for flights with two or more stops, your travel time will be longer, usually around 17 hours. Keep in mind that actual flight times can vary due to factors like wind patterns and air traffic, so it's always a good idea to allow for some extra time when planning your trip.
Can you fly business or first class from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Key West, FL (EYW-Key West Intl.)?
You can fly business class or first class between SEA and EYW. First class cabins are available on Alaska Airlines, United, Delta, and American Airlines.
How do I earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Key West, FL (EYW-Key West Intl.) flight with Expedia?
It's easy to earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Key West, FL (EYW-Key West Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Key West, FL (EYW) from Seattle, WA (SEA)?
If you're planning to travel to Key West from Seattle - Tacoma Intl. (SEA), you can fly directly into Key West Intl. (EYW). Some flights may connect through major hubs like Sky Harbor Intl. (PHX), Los Angeles Intl. (LAX), or San Francisco Intl. (SFO) before reaching Key West. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Key West, FL (EYW-Key West Intl.) at the last minute?
Typically, booking a last minute flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Key West, FL (EYW-Key West Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Key West, FL (EYW-Key West Intl.) flight and hotel package?
Securing a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Key West, FL (EYW-Key West Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Key West, FL (EYW-Key West Intl.)?
If you booked your Seattle, WA (SEA-Seattle - Tacoma Intl.) to Key West, FL (EYW-Key West Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Key West Intl.
Roundtrip price
CA $777
Distance
4347 km

Book with confidence

Seattle to Key West Flights

The easy way to book your flights from Seattle to Key West 

With Expedia, it’s simple to find and book flights to Key West from Seattle whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Key West Intl., too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Seattle to Key West today, tomorrow, or this week.  

 

Save dollars with cheap flights from Seattle - Tacoma Intl., SEA to Key West Intl., EYW 

Sort your search results by price to find great deals on your flight from Seattle to Key West—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Key West from Seattle currently is just CA $777 rising to CA $2,110.  

Here are more money-saving tips: 

  • Fly in August when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to Key West  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to Key West from Seattle 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Key West with Expedia today.

Seattle to Key West Flights

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