SEA - EYW

$273 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 7/2. 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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Everything you should know

Cheapest round-trip
$369
Typical prices: $587-$388
United Airlines
Sat 10/24Wed 10/28
SEA - EYW • 1 stop
Cheapest one-way
$273
Typical prices: $330-$375
Multiple Airlines
Thu 7/2
SEA - EYW • 3 stops
Top airlines
Cheapest • from $369 (round-trip)
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
Cheapest • Avg $372 (round-trip)
Shortest trip • 7h 47m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 36% price drop
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

Sat, Oct 24 - Wed, Oct 28
United Airlines Logo
10:58 pm - 1:02 pm
SEA
-
EYW
11h 04m
1 stop
United Airlines Logo
4:05 pm - 10:29 pm
EYW
-
SEA
9h 24m
1 stop
$369United Airlines
Tue, Jul 7 - Tue, Jul 14
American Airlines Logo
5:10 am - 6:48 pm
SEA
-
EYW
10h 38m
1 stop
American Airlines Logo
4:41 pm - 11:00 pm
EYW
-
SEA
9h 19m
1 stop
$429American Airlines
Sat, Oct 24 - Wed, Oct 28
United Airlines Logo
10:58 pm - 1:02 pm
SEA
-
EYW
11h 04m
1 stop
United Airlines Logo
4:05 pm - 10:29 pm
EYW
-
SEA
9h 24m
1 stop
$479United Airlines
Thu, Aug 20 - Tue, Aug 25
Delta Logo
7:16 am - 7:54 pm
SEA
-
EYW
9h 38m
1 stop
Delta Logo
6:15 pm - 11:57 pm
EYW
-
SEA
8h 42m
1 stop
$482Delta
Tue, Jul 7 - Tue, Jul 14
American Airlines Logo
5:10 am - 6:48 pm
SEA
-
EYW
10h 38m
1 stop
American Airlines Logo
1:01 pm - 8:25 pm
EYW
-
SEA
10h 24m
1 stop
$487American Airlines
Wed, Aug 5 - Sat, Aug 8
American Airlines Logo
5:10 am - 4:18 pm
SEA
-
EYW
8h 08m
1 stop
American Airlines Logo
7:10 pm - 12:20 am
EYW
-
SEA
8h 10m
1 stop
$518American Airlines
Thu, Jul 16 - Thu, Jul 23
American Airlines Logo
5:10 am - 6:48 pm
SEA
-
EYW
10h 38m
1 stop
American Airlines Logo
4:41 pm - 11:00 pm
EYW
-
SEA
9h 19m
1 stop
$535American Airlines
Fri, Jul 31 - Wed, Aug 5
American Airlines Logo
5:10 am - 6:48 pm
SEA
-
EYW
10h 38m
1 stop
American Airlines Logo
1:50 pm - 9:59 pm
EYW
-
SEA
11h 09m
1 stop
$540American Airlines
Tue, Jul 7 - Tue, Jul 14
American Airlines Logo
5:10 am - 6:48 pm
SEA
-
EYW
10h 38m
1 stop
American Airlines Logo
4:41 pm - 12:57 am
EYW
-
SEA
11h 16m
2 stops
$551American Airlines
Wed, Jul 22 - Mon, Jul 27
American Airlines Logo
7:10 am - 6:48 pm
SEA
-
EYW
8h 38m
1 stop
American Airlines Logo
4:41 pm - 11:00 pm
EYW
-
SEA
9h 19m
1 stop
$554American 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.

How much is a round-trip flight from Seattle to Key West?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Seattle to Key West departing in October.

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 $384 (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 $790 respectively.

Good to know

Low seasonMarch
Cheapest flight$273
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly with an average 13% increase in price.
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 5 days, the lowest price for a flight from Seattle to Key West was $273 for a one-way ticket and $369 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?

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

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

    The two airlines most popular with KAYAK users for flights from Seattle to Key West are Delta and American Airlines. With an average price for the route of $638 and an overall rating of 7.9, Delta is the most popular choice. American Airlines is also a great choice for the route, with an average price of $495 and an overall rating of 7.1.

  • 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 8398 reviews
8.5Crew
7.8Entertainment
7.8Comfort
7.2Food
8.1Boarding
Airline reviews

No service flight that took 5 hrs and a stop at an unscheduled airport. Crew and pilots did their jobs

6.0 GoodAnonymous, May 2026
ATL - ECP
Read more Delta reviews

No service flight that took 5 hrs and a stop at an unscheduled airport. Crew and pilots did their jobs

I continue to be satisfied with Delta’s excellent service out of LGA. The digit id works well and gets me through security in no time. Whenever possible, I choose Delta.

Was revoked with Jet Blue due to delay from Kenya Air

The Boarding process was great. Particularly since my wife and I require assistance. The flight attendants were amazing. We travel frequently; they honestly were a cut above. 😀

Crew was nice, meal was good. Entertainment had to be rebooted 3 times and still did not work. Turns out there was residue on screen, it needed to be cleaned to prevent the touchscreen buttons from continuously activating. I had entertainment for the last 45 minutes of a 5 hour 45 minute flight. Really unacceptable for first class. Flight attendent indicated your cleaning solution creates this problem. Seems as if this is widely known, you should be using a different product or cleaning better. Really really disappointing which simply added to the wi fi on your planes with reliably never ever works.

Overall Good! The weather delayed our takeoff from Atlanta and our arrival in Miami! If Mother Nature can mess up a flight she will do it every time!

N Everything was perfect from boarding to assistance to baggage in Tampa

Snacks and included beverages were appreciated. Boarding went smoothly. Plenty of overhead bin space. Seats get very uncomfortable after a couple of hours. After waiting 10 painful minutes for my walker, a very nice Delta guest agent pushed me in a wheelchair to the gate. It was finally delivered to me after another 15 minutes . Our checked bag was on the carousel long b4 I was able to retrieve it. Fortunately it was still there but somewhere along the way the straps we used to secure it were removed and and were not reattached. Wish I had made note of the agents name.

The cabin temperature was nice and cool. The wifi was not working.

Could not get my connecting flight boarding pass until four hrs before departure! Ver annoying especially since the staff could not explain why!

Flight left on time. Captain provided relevant announcements. We had to wait 45 minutes to desembark due to the ramp closed because of lightening.

So overall the flight was just average and nothing special. They overbooked some of the flights and they ended up running out of overhead storage space so we had to check our carry-ons which wasn't terrible but we were inconvenienced because of the second connecting flight with a long layover we couldn't get our bags until the final destination. Most of the flight attendants were pretty good and overall the meals were not that great because the chicken was dry and overcooked. They also didn't provide butter or any kind of spread with the bread which is cheap and concerning. The American airlines staff at the check-in counter was kind of unprofessional because this lady just started singing in the middle of checking us in and that's weird. The worst part of the flights was the terrible conditions of the bathrooms which were unclean and did not have toilet paper or toilet tissue available which is kind of insane for a 14-hour and 8 and 1/2 hour flight.

Cancelled BOYH legs of our flight home 30 min before initial boarding

Flight left early and arrived 30 MINUTES early at the destination. Smooth trip.

I was able to get the AA customer Service desk to put me on an earlier flight without any issues.

Incredibly delayed. First delay was due to plane coming in being late. Resulted in 30 minute delay. Boarded and then had multiple mechanical issues. Was on plane for an hour until they told people they could get off if they wanted but couldn't come back. Then gate agent rushed in and said they had lost control of who went off and we would all have to deplane and then get back on. They said flight had not been cancelled. Then while sitting waiting to board again they announced it would take two hours to get new plane and to wait at new gate. New plane arrived, reboarded only to find out that pilots had timed out. Waited for new pilots. In that time one of the flight attendants timed out. Never received food or water while waiting. Was confusing mess as to what was happening. Even flight attendants and gate agents were getting frustrated. Almost 6 hours delayed. Called American to received flight credit but can't get anywhere as Kayak reservation and don't have a ticket number. Reached out to Kayak but never heard back.

Very disappointing. Flight was delayed by 1.5 hours and food options are very underwhelming even for first class seats (same food given to economy seats)

Was not able to do a online check-in because the American Airlines system doesn't store our visa or other passport information, allowing us to have a trouble-free check-in. We were forced to have to check-in at the counter which Changes are upgrade status given that we were not able to check in much earlier.

We did not have enough time to make our connecting flight. As a result, we were put onto a different airline for our second leg. The different airline was NOT comparable to British Airlines, and our arrival was significantly delayed. The actual flight on BA was amazing.

Incoming flight was delayed, delaying boarding. It then took 30 mins to take off. Took 20 mins to get to a gate because they changed the gate last minute, crew weren’t ready so there was no one staffed to work the jet bridge. Boarding was so disorganized as is usual with American because everyone just stands around the gate regardless of boarding group.

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

Information on your arrival and departure airports