SEA - EYW

$161 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 2/5. 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
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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$329
Overall average: $532
American Airlines
Wed 1/28Sat 1/31
SEA - EYW • 1 stop
Cheapest one-way
$161
Typical prices: $382-$430
Multiple Airlines
Thu 2/5
SEA - EYW • 3 stops
Top airlines
American Airlines
Cheapest • from $334 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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
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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

Wed, Jan 28 - Sat, Jan 31
American Airlines Logo
7:00 am - 6:01 pm
SEA
-
EYW
8h 01m1 stop
American Airlines Logo
3:15 pm - 10:07 pm
EYW
-
SEA
9h 52m1 stop
$329American Airlines
Tue, Feb 3 - Tue, Feb 10
American Airlines Logo
10:00 am - 11:56 pm
SEA
-
EYW
10h 56m2 stops
American Airlines Logo
2:58 pm - 9:47 pm
EYW
-
SEA
9h 49m1 stop
$334American Airlines
Tue, Feb 3 - Tue, Feb 10
American Airlines Logo
10:00 am - 11:56 pm
SEA
-
EYW
10h 56m2 stops
American Airlines Logo
6:06 am - 3:34 pm
EYW
-
SEA
12h 28m2 stops
$340American Airlines
Tue, Feb 3 - Sat, Feb 7
American Airlines Logo
7:00 am - 6:01 pm
SEA
-
EYW
8h 01m1 stop
American Airlines Logo
3:15 pm - 10:07 pm
EYW
-
SEA
9h 52m1 stop
$354American Airlines
Sat, Jan 24 - Sat, Jan 31
American Airlines Logo
7:00 am - 6:06 pm
SEA
-
EYW
8h 06m1 stop
American Airlines Logo
3:15 pm - 10:07 pm
EYW
-
SEA
9h 52m1 stop
$359American Airlines
Sat, Jan 24 - Sat, Jan 31
American Airlines Logo
9:45 pm - 1:03 pm
SEA
-
EYW
12h 18m2 stops
American Airlines Logo
3:15 pm - 10:07 pm
EYW
-
SEA
9h 52m1 stop
$364American Airlines
Tue, Jan 20 - Tue, Feb 10
American Airlines Logo
10:00 am - 11:56 pm
SEA
-
EYW
10h 56m2 stops
American Airlines Logo
6:06 am - 3:34 pm
EYW
-
SEA
12h 28m2 stops
$370American Airlines
Wed, Feb 4 - Sun, Feb 8
American Airlines Logo
6:00 am - 4:24 pm
SEA
-
EYW
7h 24m1 stop
American Airlines Logo
2:43 pm - 9:59 pm
EYW
-
SEA
10h 16m1 stop
$379American Airlines
Sat, Feb 7 - Wed, Feb 11
Delta Logo
9:55 am - 11:25 am
SEA
-
EYW
22h 30m2 stops
Delta Logo
2:45 pm - 11:17 pm
EYW
-
SEA
11h 32m1 stop
$407Delta
Sat, Feb 28 - Sat, Mar 7
American Airlines Logo
10:57 pm - 2:05 pm
SEA
-
EYW
12h 08m1 stop
American Airlines Logo
2:39 pm - 9:15 pm
EYW
-
SEA
9h 36m1 stop
$417American 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 $876 respectively.

Good to know

Low seasonJuly
Cheapest flight$161
Best time to beat the crowds with an average 4% drop in price.
Most popular time to fly and prices are also 3% 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 $161 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 $493 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 3 airlines serving 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 8025 reviews
7.9Comfort
8.5Crew
7.8Entertainment
8.1Boarding
7.2Food
Airline reviews

Comfort Plus seat 11E seemed smaller than prior flights. The movie selection is good. Watched most of the most recent Tron movie. I'll watch the remaining part later as my movie is saved in the Delta Seatback Experience.

8.0 ExcellentG, Jan 2026
ATL - FLL
Read more Delta reviews

Comfort Plus seat 11E seemed smaller than prior flights. The movie selection is good. Watched most of the most recent Tron movie. I'll watch the remaining part later as my movie is saved in the Delta Seatback Experience.

A 12 hour flight during the day with one real meal service - are you kidding? Also the breakfast was one of the worst and not what was listed

Delta is a good airline. I've never had an issue with Delta. I'll continue to fly with them until they show me that I shouldn't.

Original flight was cancelled and when i was rebooked by the airline, they couldn't seat me in the same type of seat as I had originally booked (went from window/aisle to middle/middle and one was a bulkhead seat, and other wasn't in the same class)

Good seats in Main cabin, excellent service and excellent landing

First, Delta needs more flights to/from Miami. Second, a 1000pm leaving at 1230pm is unacceptable from their biggest airport world hub. Another aircraft could have been used such as the aircraft scheduled to be used in the morning for that exact same route. Yes, I did get me there but the lack of sleep the next day didn't help me enjoy my entire trip since I was busy with activities during the weekend. This can be and is expected from Spirit (going bankrupt) and Frontier (despite they're nickel and dimers). But from Delta's World Hub? That's totally unacceptable!

Service in business class was not impressive. I ordered coffee with dinner and then watched other people get 2 refills before I got my 1 cup of coffee, and only after I pressed the attendant button overhead. Furthermore, the seats in the forward cabin need maintenance on this 737-800: the upholstery is detaching from the seat frame, at least on the backs of seats 1C, 1D.

I truly love flying with Delta. They have always treated me with the upmost respect

Our flight attendant in FIRST CLASS was one of the worst I’ve ever had. She was not at all pleasant, nor particularly good at her service.

The flight was an hour and a half late departing which was inconvenient

They lost my luggage, so, not happy. The crew was nice but my suitcases never made it, still trying to find out what happened!

The staff was hospitable and professional. The seat had a bit of wear. The winner shade was stuck 1/4 open. I received the best of both worlds. The morning sun was able to come in and blind the screen i was trying to use while at the same time it was too low to look out and enjoy the view. Rather embarrassing for a 1st class ticket.

Perfect flight. Smooth flight. Arrived 20 minutes early at destination. Excellent service.

The flights were on time which was great give. It was holiday travel season and there’d been some weather issues. The only complaint and this is every time with United is the terrible seat design. The head rest is not built for comfort and having my neck bent forward for a cross country trip reminded me while I try not to take United flights as a rule.

I’m so sorry, I can’t remember her name, I believe it was Dimpti. She was stellar, also a mature Asian flight attendant, lots of flowers in her hair, just as amazing! But literally the crew was AWESOME . Only downside is there weren’t any charging outlets. Maybe I needed to ask a flight attendant , but it would’ve been nice to have one easily accessible.

The flight was delayed by two de-icings. The seatbelt did not work correctly. It did not stay tight.

Everything was absolutely wonderful from check in to baggage claim. Staff was very professional and sweet. Will definitely recommend United to family and friends.

Sitting on the runway after we land for almost two hours! Not sure if we should blame United or Just Dumpy Vance.

Hotter than Hades in August. Why, why do crews think that in the winter when we are already dressed for cold weather we need a cabin that is 82 degrees. Even the vents were blowing hot air.

After a delay at the gate, C3, at Ohare on Sunday, I left my Blk ski coat on the bench at the gate, lost! Please review my lob claim, thx.

Great flight - friendly and attentive team! Seats in coach were comfy, but a little cramped - but that is the case with all airlines ;)

I got sick nothing contagious but distressing and the care I received by Kayla? Keighly the flight attendant will be memorable for ever. Thank You

Waaay too small plane. They also need to up the size of the overhead bins. I would love to keep me 3k with of camera equipment in my hard case baggahe instead of it being thrown into the belly of the plane

Attendants were pleasant and the flight was smooth and relaxed.

It was fine. No drinks nor snacks offered though. I thought that was unusual.

Delays to take off and to leave the plane after landing added a lot of time to this flight.

It was a red eye flight, so no meals were provided, but it was fine with snacks. The seats felt cramped and almost too narrow.

We didn't take off until an hour after we boarded.

Wish they had the seat-back video screens for watching movies or playing games.

Very good but wish they had the seat-back video screens for movies & games

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

Information on your arrival and departure airports