SEA - EYW

$158 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 3/5. 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
$309
Overall average: $483
American Airlines
Sat 1/17Sat 1/31
SEA - EYW • 1 stop
Cheapest one-way
$158
Typical prices: $499-$588
Multiple Airlines
Thu 3/5
SEA - EYW • 2 stops
Top airlines
American Airlines
Cheapest • from $309 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 31% compared to booking last minute.
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
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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

Sat, Jan 17 - Sat, Jan 31
American Airlines Logo
11:11 pm - 10:57 amSEA-EYW
8h 46m1 stop
American Airlines Logo
1:22 pm - 8:45 pmEYW-SEA
10h 23m1 stop
$309American Airlines
Find Deal
Sat, Jan 17 - Sat, Jan 31
American Airlines Logo
9:45 pm - 10:57 amSEA-EYW
10h 12m2 stops
American Airlines Logo
2:04 pm - 10:07 pmEYW-SEA
11h 03m1 stop
$314American Airlines
Find Deal
Sat, Jan 17 - Sat, Jan 31
American Airlines Logo
8:35 am - 11:56 pmSEA-EYW
12h 21m2 stops
American Airlines Logo
6:06 am - 3:34 pmEYW-SEA
12h 28m2 stops
$319American Airlines
Find Deal
Fri, Jan 30 - Mon, Feb 2
American Airlines Logo
7:00 am - 6:01 pmSEA-EYW
8h 01m1 stop
American Airlines Logo
4:01 pm - 10:20 pmEYW-SEA
9h 19m1 stop
$349American Airlines
Find Deal
Tue, Dec 2 - Tue, Dec 9
American Airlines Logo
10:35 am - 11:50 pmSEA-EYW
10h 15m2 stops
American Airlines Logo
2:39 pm - 9:13 pmEYW-SEA
9h 34m1 stop
$354American Airlines
Find Deal
Tue, Dec 2 - Tue, Dec 9
American Airlines Logo
10:35 am - 11:50 pmSEA-EYW
10h 15m2 stops
American Airlines Logo
7:00 am - 3:24 pmEYW-SEA
11h 24m2 stops
$359American Airlines
Find Deal
Tue, Dec 2 - Tue, Dec 9
American Airlines Logo
5:24 am - 4:29 pmSEA-EYW
8h 05m1 stop
American Airlines Logo
4:10 pm - 11:16 pmEYW-SEA
10h 06m1 stop
$407American Airlines
Find Deal
Wed, Feb 11 - Wed, Feb 18
American Airlines Logo
6:00 am - 4:24 pmSEA-EYW
7h 24m1 stop
American Airlines Logo
4:02 pm - 11:42 pmEYW-SEA
10h 40m1 stop
$409American Airlines
Find Deal
Fri, Feb 6 - Sat, Feb 14
American Airlines Logo
8:04 am - 9:47 pmSEA-EYW
10h 43m2 stops
American Airlines Logo
2:40 pm - 11:08 pmEYW-SEA
11h 28m1 stop
$412American Airlines
Find Deal
Wed, Feb 11 - Thu, Feb 19
American Airlines Logo
6:00 am - 4:24 pmSEA-EYW
7h 24m1 stop
American Airlines Logo
1:36 pm - 11:32 pmEYW-SEA
12h 56m2 stops
$414American Airlines
Find Deal
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’s the cheapest day of the week to fly from Seattle to Key West?

The average price of all round-trip flights from Seattle to Key West clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Key West on a Wednesday, as we generally find the cheapest rates on that day for this route. On the other hand, Friday is the most expensive day to fly from Seattle to Key West. For your return ticket, we recommend flying on a Friday and avoiding Tuesdays for the best deals.

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.

How far in advance should I book a flight from Seattle to Key West?

To calculate weekly average prices, KAYAK takes all prices for each week before departure 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 average of all the values for each week.

To get a below average price on the flight from Seattle to Key West, you should book around 2 weeks before departure, which saves you about 31% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 14 weeks before departure.

Good to know

Low seasonJuly
Cheapest flight$158
Best time to beat the crowds with an average 3% drop in price.
Most popular time to fly and prices are also 7% 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 $158 for a one-way ticket and $309 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 $688 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 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 8007 reviews
8.1Boarding
7.9Entertainment
8.5Crew
7.9Comfort
7.3Food
Airline reviews

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

10.0 ExcellentMAYRA, Nov 2025JFK - MIA
Read more Delta reviews

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

The flight was great. The gate location was way to far away!!!

The flight attendant in first class was beyond rude and didn't care at all about her job. AND the gate agent was even worse than the flight attendant for rudeness. She was awful.

Always good but we must do something about people in rows ahead of you that don't put their seats back up when they are suppose to. And It's rough to not be able to even lean over to get something out of my purse.

Food was surprisingly good but the WiFi was not great

this crew didn't care much. bumping carts into seats more times than i care to remember

Everything was fine except the entertainment was not working for half of the flight.

Easy boarding with an extremely kind attendant. Seats were spacious and we had 3 seats for 2 people so we could stretch out. Comfortable air flow and very attentive and hospital attendants. Bathrooms and food were the only negative. Bathrooms were so small you could hardly get in and close the door. I don’t think an obese person would fit or a person with a movement disability. Food was the trending food for flights, nonexistent. We spent $40 getting sandwich and snack at airport for our 6 hour flught.

Starlink wifi on the Embraer E175 is an excellent experience. I was able to connect and work from IAD all the way to approach into BTV.

Older aircraft, no meal, only food was for purchase. Not impressed United.

United needs to step up their game. Delayed flight leaving Seattle, San Francisco. Older aircraft, not very comfortable.

Always wish for more healthy, gluten free options. We have to bring our own.

Having a long layover, I was very appreciative of the ability to stand by for an earlier flight. Other airlines like Delta have refused this to me in the past, just to be mean (because my ticket class wasn't high enough). United went out of their way to help me get to my destination early, which I really appreciated given that it was the third leg of a 24+ hour journey for me.

Other than a way way too cold cabinets for the entire flight, all was great

One bag is incorrect and not acceptable for an international flight. The food was not just good. I won't fly with them again.

Not pleasant trip cross country when the entertainment and WiFi system not working. No entertainment for entirety of route. Staff was rather nonchalant in that they dismissed the problem due to age of plane. It would have been nice to know this up front so I could have come prepared to read or download movies before boarding Coincidentally or not, there was a similar issue with the entertainment system on my previous flight I took on my fist leg of the trip. There are no seat TVs, so you must rely on the app when it works. United can do better. Also, what use it it to pay for boarding group 2 when half of the passengers are in the same line as you?

Plane boarded early a quickly, was mostly full. We left close to on time. And landed early.

The newer screen was super cool and had the option to watch many different shows or movies. Crew was polite and helpful. However again, many children screaming bloody murder and kicking my seat, and parents doing nothing about it as usual.

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

Flight was delayed not sure why no explanation given and no apologies either. Otherwise the flight was fine

While waiting to claim my checked luggage, I discovered the airline had lost it. After a long wait and inquiries, I discovered it was on another flight. Fortunately, the airline finally sent my luggage home.

Dreadful experience. Our flight was delayed more than 8 hours due to a maintenance issue and the assistance from rebooking was poor. I was travelling with a bad knee and needed assistance waited in one place more than 3 hours before someone came with a wheelchair. The woman next to me was a 91 year old great grandmother who had waited more than 4 hours. There were moments of support from the staff but it appeared as they were going against the direction of management. It was apathy, lack of ownership and dismissive responses with small moments of kindness and understanding typically from grey haired, female, veteran staff..

Flight delays numerous times. Everytime we would get close to boarding it would be delayed again. Strung along the entire time.

This flight never occurred because AA couldn’t get their act together.

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

Information on your arrival and departure airports