SEA - EYW

$141 Find Cheap Flights from Seattle to Key West

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Key West departing on 4/18. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Key West

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Key West, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Key West, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$329
Overall average: $493
American Airlines
Mon 3/16Wed 3/25
SEA - EYW • 1 stop
Cheapest one-way
$141
Typical prices: $361-$404
Multiple Airlines
Sat 4/18
SEA - EYW • 2 stops
Top airlines
American Airlines
Cheapest • from $329 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Seattle and Key West. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Boston (BOS)
Cheapest • Avg $372 (round-trip)
Miami (MIA)
Shortest trip • 7h 26m (one-way)
Insights
Insights
Insights
Insights
When to travel
September
Cheapest • 37% price drop
February
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Key West!
Flight Deals
Booking Insights
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Key West that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Key West

Mon, Mar 16 - Wed, Mar 25
American Airlines Logo
10:57 pm - 12:17 pm
SEA
-
EYW
10h 20m
1 stop
American Airlines Logo
2:25 pm - 9:16 pm
EYW
-
SEA
9h 51m
1 stop
$329American Airlines
Wed, Mar 18 - Wed, Mar 25
American Airlines Logo
6:00 am - 7:12 pm
SEA
-
EYW
10h 12m
2 stops
American Airlines Logo
2:25 pm - 9:16 pm
EYW
-
SEA
9h 51m
1 stop
$334American Airlines
Sat, Apr 11 - Wed, Apr 15
American Airlines Logo
11:33 pm - 12:38 pm
SEA
-
EYW
10h 05m
1 stop
American Airlines Logo
6:45 am - 2:27 pm
EYW
-
SEA
10h 42m
2 stops
$345American Airlines
Wed, Mar 18 - Wed, Mar 25
American Airlines Logo
6:00 am - 7:12 pm
SEA
-
EYW
10h 12m
2 stops
American Airlines Logo
2:06 pm - 12:24 am
EYW
-
SEA
13h 18m
2 stops
$375American Airlines
Wed, Mar 18 - Wed, Mar 25
United Airlines Logo
10:55 am - 10:19 pm
SEA
-
EYW
8h 24m
1 stop
United Airlines Logo
4:55 pm - 10:59 pm
EYW
-
SEA
9h 04m
1 stop
$438United Airlines
Sun, Mar 15 - Wed, Mar 25
American Airlines Logo
12:13 am - 3:57 pm
SEA
-
EYW
12h 44m
2 stops
American Airlines Logo
3:56 pm - 11:40 pm
EYW
-
SEA
10h 44m
1 stop
$470American Airlines
Mon, May 4 - Sun, May 10
American Airlines Logo
10:29 pm - 11:16 am
SEA
-
EYW
9h 47m
1 stop
American Airlines Logo
7:30 pm - 12:44 am
EYW
-
SEA
8h 14m
1 stop
$476American Airlines
Sat, Apr 4 - Thu, Apr 9
American Airlines Logo
10:57 pm - 1:45 pm
SEA
-
EYW
11h 48m
1 stop
American Airlines Logo
2:29 pm - 10:47 pm
EYW
-
SEA
11h 18m
1 stop
$478American Airlines
Sun, May 3 - Sun, May 10
American Airlines Logo
12:59 am - 4:30 pm
SEA
-
EYW
12h 31m
2 stops
American Airlines Logo
7:30 pm - 12:44 am
EYW
-
SEA
8h 14m
1 stop
$481American Airlines
Sat, Mar 7 - Wed, Mar 11
United Airlines Logo
11:47 pm - 2:55 pm
SEA
-
EYW
11h 08m
1 stop
United Airlines Logo
4:55 pm - 10:59 pm
EYW
-
SEA
9h 04m
1 stop
$489United Airlines
Booking Insights

KAYAK's insights & trends for Seattle to Key West flights

Get data-powered insights and trends into flights from Seattle to Key West to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Seattle to Key West?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Key West, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Seattle to Key West is September, where tickets cost $383 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $1,091 and $893 respectively.

Good to know

Low seasonJuly
Cheapest flight$141
Best time to beat the crowds with an average 17% drop in price.
Most popular time to fly and prices are also 6% lower on average.
Flight from Seattle to Key West

When to book flights from Seattle to Key West

Are your dates flexible? Find out the best times to travel from Seattle to Key West based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Seattle to Key West

  • What is the cheapest flight from Seattle to Key West?

    In the last 3 days, the lowest price for a flight from Seattle to Key West was $141 for a one-way ticket and $329 for a round-trip.

  • Do I need a passport to fly between Seattle and Key West?

    No

  • Which airports will I be using when flying from Seattle to Key West?

    On your way to Key West, you’ll fly out from Seattle/Tacoma Intl. You’ll be landing at Key West.

  • Which aircraft models fly most regularly from Seattle to Key West?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Seattle to Key West?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Seattle and Key West, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Seattle to Key West, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Seattle to Key West are Delta and United Airlines. With an average price for the route of $638 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $587 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Seattle to Key West?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Key West.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Key West?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Key West from Seattle is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Key West?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Key West with an airline and back to Seattle with another airline. Booking your flights between Seattle and EYW can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Key West?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Key West from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Seattle to Key West

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Key West. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seattle to Key West? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8236 reviews
7.9Comfort
8.5Crew
8.1Boarding
7.8Entertainment
7.2Food
Airline reviews

Flight was delayed by 3-hours and their fix was… complimentary pretzels.

4.0 OkayJahmes, Feb 2026
LAX - MCO
Read more Delta reviews

Flight was delayed by 3-hours and their fix was… complimentary pretzels.

The staff on board and gate was nice - a welcome change from the usual. We also arrived early, which was a great benefit, given that it takes 30 minutes plus to get bags at SRQ.

First flight out and was 85 minutes delayed. Notification came out way too late

They took all carry-on luggage from Groups 6 -9 - I was group 5 and waiting in line to board - they made me check my luggage too. That then went to baggage claim and delayed departure from the airport. There was overhead room in my seating area - Delta over reacted. Also, had a gentleman next to me that took up 1/2 my seat.

Sorry I didn't realize I was writing a review for each leg. Please see my previous review - it applies to the entire flight, not just a single leg.

boarded at 5:30 pm, pushed away from gate at 6pm ... takeoff was not until ~6:45pm; disappointing

Paid for wifi that didn't work. No plug in seat to work. No entertainment.

Was forced to check in my small carry on, even though I informed the crew it has very fragile items inside

First class and monitors weren’t working for mine & my husbands. Eventually fixed, but quite annoyed as we bought first class. Also, No foot rests.

It was delayed but other than that it was great.

We missed our flight and got stranded in Miami where we had to rent a hotel we could not afford. they would not work with us because they said it was weather related even though the gate attendant said it was not. I could go on but trying to get satisfaction has wore me down, which I believe is the intent. My only solution is to never fly AA again.

The flight was really crowded. Flight attendants were just ok.

Didn't get a seat assignment until the last minute even though i picked a seat.

Flight was on time and the meal and service were good.

Old equipment, needs upgrade and seat comfort. Internet didn't work 75% or the time.

No gates avail at DFW so our incoming had to wait 30 mins for a plane to push back because they Had mechanical. We boarded 90 mins delayed and then we had a mechanical. Come on American…do better. Also at my seat the tray table had not been cleaned. Floor had not been cleaned. But captain and flight Att were very picture and apologetic.

It was a little concerning to hear the ground crew arguing with the flight crew over baggage space. Instead of taking them and checking them, they started checking for space in the first class cabin moving items around like the flight crew didn't know what they were doing. I was embarrassed for them.

On the plus side, crew was attentive, drinks were cold, and in-flight entertainment selection was better than some other airlines. On the negative aide, Plane was delayed almost an hour, either no announcements from the gate crew. Biscoff cookies are gross, appreciate airlines that give a choice. Also, crew had no personality or enthusiasm at all.

So excited very proud first of all I wanna thank kayak all updates very professional and fast alart And amazing cabin crew so nice to me they deserve big salute

UGH I HAD TO MISS MY FIRST FLIGHT TO TAMPA CAUSE OF THE 10 MINUTE DELAY OF THE ORLANDO TO MIAMI ONE SO THEY HAD ME GET ANOTHER TICKET. I AM NOT HAPPY AT ALL BECAUSE IT MADE ME MISS MY CONNECTING FLIGHT FROM TAMPA TO LONDON AND FORCED ME TO MISS A DAY AT MY ROOM IN THE UK.

Everything you need to know for your flight from Seattle to Key West

Information on your arrival and departure airports