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Find cheap flights from Seattle to Key West from $174

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 5/29. 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
0 bags
Fri 6/7
Fri 6/14

Search 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
In the last 7 days travelers have searched 43,968,530 times on KAYAK, and here is why:

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Cheap flight deals 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 and deals for you by selecting your travel dates.
Choose your dates
11:58 pm - 12:04 pmSEA-EYW
9h 06m1 stop
4:24 pm - 10:57 pmEYW-SEA
9h 33m1 stop
$545American Airlines
Find Deal
Tue, Jul 16 - Tue, Jul 23
1:14 am - 1:04 pmSEA-EYW
8h 50m1 stop
4:24 pm - 10:57 pmEYW-SEA
9h 33m1 stop
$546American Airlines
Find Deal
Mon, Jul 15 - Tue, Jul 23
1:14 am - 2:40 pmSEA-EYW
10h 26m2 stops
1:58 pm - 10:57 pmEYW-SEA
11h 59m1 stop
$551American Airlines
Find Deal
Mon, Jul 15 - Tue, Jul 23
1:14 am - 2:40 pmSEA-EYW
10h 26m2 stops
1:44 pm - 8:40 pmEYW-SEA
9h 56m2 stops
$558American Airlines
Find Deal
Mon, Jul 15 - Tue, Jul 23
7:15 am - 2:25 pmSEA-EYW
28h 10m2 stops
11:45 am - 10:47 pmEYW-SEA
14h 02m2 stops
$593United Airlines
Find Deal
Sun, Oct 6 - Fri, Oct 11
11:59 pm - 12:06 pmSEA-EYW
9h 07m1 stop
1:41 pm - 9:24 pmEYW-SEA
10h 43m1 stop
$666American Airlines
Find Deal
Sat, Jun 8 - Sat, Jun 15
12:20 am - 12:59 pmSEA-EYW
9h 39m1 stop
5:47 pm - 11:59 pmEYW-SEA
9h 12m1 stop
$668American Airlines
Find Deal
Fri, Jun 7 - Sat, Jun 15
12:30 am - 1:07 pmSEA-EYW
9h 37m2 stops
6:05 pm - 11:56 pmEYW-SEA
8h 51m1 stop
$2,256Delta
Find Deal
Fri, Oct 4 - Sat, Oct 12
12:30 am - 5:09 pmSEA-EYW
13h 39m2 stops
7:00 am - 5:00 pmEYW-SEA
13h 00m2 stops
$2,284Delta
Find Deal
Sat, Oct 5 - Fri, Oct 11
12:30 am - 1:07 pmSEA-EYW
9h 37m2 stops
7:00 am - 6:04 pmEYW-SEA
14h 04m2 stops
$2,364Delta
Find Deal
Fri, Oct 4 - Sat, Oct 12

Flights from Seattle to Key West - Travel Insights & Trends

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 flights from Seattle to Key West clicked on KAYAK for each day over the last 12 months.
Your flight ticket price will generally be cheaper if you fly to Key West on a Wednesday and more expensive on a Friday. On your return trip to Seattle, you should consider flying back on a Monday, and avoid Tuesdays for better 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 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 August, where tickets cost $562 on average. On the other hand, the most expensive months are June and April, where the average cost of tickets is $895 and $737 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for 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 month.
To get a below average price on the flight from Seattle to Key West, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 41 days before departure.

Which airlines provide the cheapest flights from Seattle to Key West?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 3 days, American Airlines offered the best one-way deal for that route, at $273. KAYAK users also found Seattle to Key West round-trip flights on American Airlines from $545 and on United Airlines from $593.

Good to know

Low season

June

High season

February

Cheapest flight

$174
Best time to beat the crowds but there is an average 32% increase 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 $174 for a one-way ticket and $545 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?

    oneworld, SkyTeam, and Star Alliance 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 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 $822 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $603 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.

See more FAQs

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.
8.0
DeltaOverall score based on 10789 reviews
7.4Food
8.0Entertainment
8.6Crew
8.2Boarding
7.9Comfort
Airline reviews

I would fly again the whole experience was great. The only feed back I can give that they don't do that American Airlines does is the crew there is more humorous with boarding and thank their passengers. It makes it more fun to fly with them. I would however fly Delta again.

10.0 ExcellentDonnel, Apr 2024ATL - EYW
Read more about Delta reviews

I would fly again the whole experience was great. The only feed back I can give that they don't do that American Airlines does is the crew there is more humorous with boarding and thank their passengers. It makes it more fun to fly with them. I would however fly Delta again.

Had a broken tray in business class. Crew just shrugged it off.

Everything was great except for the seat. The backrest would not stay in the upright position.

public website still broken for years randomly blocking browsers with privacy options active after loading a page maybe once. check-in on laptop was almost impossible but eventually randomly worked. had to print pass at airport since couldn't get back in to load digital pass on mobile firefox or chrome. red eye flight so smooth onboarding, plenty of room to spread out, easy offboarding. onboard wifi instructions mention vpn can cause problems connecting but fails to also mention private dns. no printed or built in menu list, seems weird to require personal device to point at qr code link for menu which does not even allow direct ordering. people with health condition risk related dietary restrictions trying to avoid for example cholesterol and sugar are left guessing what they can order either way without nutritional info highlights (cranberry juice was minute maid cocktail with as much suger as typical can of soda). tap to pay wasn't working and always seems sketchy to manually enter card info. good movie variety, so limited tv was okay.

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

Flight diverted in SD. Later take off in Seattle by 1.3hrs

Mi primera conexión se retrasó por lo cual perdí mi segunda conexión la cual salió adelantada

Crew was not friendly when I went to request a seat change.

There were choices for the snacks. Good choices and tasty lunch and breakfast as well.

The flight crew was amazing. I’m very tall and they moved me to an exit row unsolicited!!! Amazing service.

There was a group of school age passengers that were very loud and unruly with their chaperones were no where to be found.

flight delays, staff only communicating when pushed, food service lasting a grand total of 7 minutes, stuck in seat from 45mins into flight until landing

I liked everything about the flight. The service was excellent!

Delayed a day due to snow storm. Was upgraded. That kind of made up for significant delays from FLL to COS with no compensation or acknowledgement.

The crew were really great, but the 4 hour delay in small chunks was the worst.

Everything was very good. Boarding and takeoff were on time and organized. Had a good flight

Other than the two hour delay, it was fine. Of course they were very professional and kept us informed throughout the whole delay..

Good. The wife was not working but then it got resolved.

Good boarding. Crew started quick with drinks and food. They came around several times for trash which I really liked. Other than turbulence due to storms in the area, flight was great.

Seats are way too snug for my hip to knee ratio and the recline on the seat in front of me made my experience worst. My legs had no room at all. Not a plane for people 6 ft or over unless you fly first class.

Flight was cancelled had to move to another gate late again no internet paid for the month and never can use it waste of money

Flight delayed over an over all day until it cancelled at 1:30am. Would not repeatedly delay that late. Offer hotel rooms and rebook early. Very difficult for families with small children

Those seats were way too narrow. I had the middle seat, one person was a very skinny person and we still couldn’t avoid touching each other anytime one of us moved. The other person was larger and we were basically sitting in each others lap the entire flight. There was zero entertainment. The flight was long enough to justify tvs, but no. Gotta sit there in your infant seat and twiddle your thumbs.

It was a good flight. Of course it was full, but it went well.

We sat on the plane for 1 hour because the airline was short handed could not be unloading.

We are gluten free, there were not any available complimentary gluten free options.

Flight delayed 3 times. We were directed to go to a gate across from our gate. The plane wasn't there yet so we had to wait for it to arrive, then deplane everyone and then wait again for the plane to be cleaned. After 45 minuites we were allowed on the plane. The first plane had mechanical issues. The 2nd plane must have had bathroom issues because we did not have any food service whatsoever. No snack or beverage. That made for a long time not to have anything considering that we had just made it to the original gate and we had no time to stop to get food or a drink. Then we didn't want to leave the gate to get food because we wouldn't know how much longer the delay would be. Then the next gate change. Had we been told that the total time would have been aprox 45 min later we would have left to get food and a beverage. We had to wait again for the okay to the pilot to take off so we were on the runway for another 20 min. Overall, we were delayed over 2 hours which felt like 4 hours.

Lots of weather delays that were poorly communicated and managed. I get there are weather delays but they didn’t make it clear what was happening or comfortable on the plane

Me and my husband experienced very bad in American Airlines. We missed our flight going to Doha. The American Airlines was delayed we arrived already 10:27pm. Supposed to be 9:40 pm. So what they did they rebooked our flight and they gave us a hotel. When we arrived at the hotel the front desk said it was fully booked already. Oh my gosh! I said why did you accept the booking if it's fully booked. The guy said that's American Airlines they just book even it's already full. That's 2am already, we have nothing to do so, we decided to go another hotel. We pay the room, food and taxi. Pls give an action on this matter. Refund our expenses and give us more compensation. Not only our room, food, taxi but also our efforts, tiredness looking for a room that can accommodate us.

Horrible. Flight was delayed and very bumpy. I was super unhappy

Book cheap flights from Seattle to Key West

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Seattle to Key West found on KAYAK in the last 72 hours.
5/29Wed
2 stops
27h 46mSEA-EYW
$174
5/29Wed
1 stopAmerican Airlines
9h 56mSEA-EYW
$273
5/28Tue
1 stopAmerican Airlines
7h 54mSEA-EYW
$274
5/28Tue
2 stopsAmerican Airlines
11h 03mSEA-EYW
$279
7/14Sun
2 stops
25h 41mSEA-EYW
$307
7/14Sun
3 stops
19h 55mSEA-EYW
$355
7/14Sun
1 stopDelta
8h 05mSEA-EYW
$369
5/29Wed
3 stopsUnited Airlines
29h 42mSEA-EYW
$370
7/13Sat
1 stopAmerican Airlines
9h 51mSEA-EYW
$399
5/17Fri
2 stopsUnited Airlines
26h 25mSEA-EYW
$477

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Last minute flights from Seattle to Key West

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Seattle to Key West that are departing in the next 10 days.
5/12Sun
multi-stop
27h 47mSEA-EYW
5/16Thu
multi-stop
32h 37mEYW-SEA
$681
5/12Sun
multi-stop
27h 47mSEA-EYW
5/16Thu
multi-stop
18h 19mEYW-SEA
$734
5/11Sat
multi-stopUnited Airlines
23h 59mSEA-EYW
5/13Mon
multi-stopUnited Airlines
19h 47mEYW-SEA
$836
5/11Sat
multi-stopUnited Airlines
31h 09mSEA-EYW
5/13Mon
multi-stopUnited Airlines
19h 47mEYW-SEA
$841
5/11Sat
multi-stopUnited Airlines
10h 09mSEA-EYW
5/16Thu
multi-stopUnited Airlines
22h 56mEYW-SEA
$856
5/12Sun
multi-stop
26h 00mSEA-EYW
5/16Thu
multi-stop
32h 37mEYW-SEA
$901
5/11Sat
multi-stopAmerican Airlines
8h 25mSEA-EYW
5/16Thu
multi-stopAmerican Airlines
11h 30mEYW-SEA
$955
5/10Fri
multi-stopAmerican Airlines
7h 54mSEA-EYW
5/16Thu
multi-stopAmerican Airlines
10h 45mEYW-SEA
$956
5/10Fri
multi-stopAmerican Airlines
11h 53mSEA-EYW
5/16Thu
multi-stopAmerican Airlines
8h 32mEYW-SEA
$961
5/10Fri
multi-stopAmerican Airlines
11h 11mSEA-EYW
5/16Thu
multi-stopAmerican Airlines
11h 54mEYW-SEA
$966

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Seattle - Key West Flights

Departure:

Seattle (undefined)United States

Destination:

Key West (EYW)United States

Return flight deals:

Key West - Seattle

Cabin classes: