Cheap flights from Seattle to Key West from $237
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Key West departing on 10/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Fly from
Fly to
Route
Depart
Return
SeattleKey West
SEA Seattle/Tacoma Intl - EYW Key West
SEAEYW
Seattle/Tacoma Intl
Mon 12/21
11:44 pm-11:41 am
1 stop8h 57m
Key West
Fri 12/25
4:04 pm-10:32 pm
1 stop9h 28m
SeattleKey West
SEA Seattle/Tacoma Intl - EYW Key West
SEAEYW
Seattle/Tacoma Intl
Tue 1/5
5:10 am-4:38 pm
1 stop8h 28m
Key West
Wed 1/13
12:12 pm-8:13 pm
1 stop11h 01m
SeattleKey West
SEA Seattle/Tacoma Intl - EYW Key West
SEAEYW
Seattle/Tacoma Intl
Tue 1/19
6:00 am-5:11 pm
1 stop8h 11m
Key West
Wed 1/27
6:00 pm-12:09 am
1 stop9h 09m
SeattleKey West
SEA Seattle/Tacoma Intl - EYW Key West
SEAEYW
Seattle/Tacoma Intl
Sat 11/14
9:14 pm-10:44 am
1 stop10h 30m
Key West
Sat 11/21
5:05 pm-12:42 am
1 stop10h 37m
SeattleKey West
SEA Seattle/Tacoma Intl - EYW Key West
SEAEYW
Seattle/Tacoma Intl
Sat 10/24
10:48 pm-1:54 pm
1 stop12h 06m
Key West
Wed 10/28
4:10 pm-11:17 pm
1 stop10h 07m
SeattleKey West
SEA Seattle/Tacoma Intl - EYW Key West
SEAEYW
Seattle/Tacoma Intl
Sat 11/7
11:59 pm-10:47 am
1 stop7h 48m
Key West
Tue 11/10
6:08 pm-11:57 pm
1 stop8h 49m
SeattleKey West
SEA Seattle/Tacoma Intl - EYW Key West
SEAEYW
Seattle/Tacoma Intl
Fri 3/5
5:00 am-6:40 pm
1 stop10h 40m
Key West
Wed 3/10
2:29 pm-10:39 pm
1 stop11h 10m
SeattleKey West
SEA Seattle/Tacoma Intl - EYW Key West
SEAEYW
Seattle/Tacoma Intl
Sat 11/7
11:59 pm-10:47 am
1 stop7h 48m
Key West
Thu 11/12
6:08 pm-11:57 pm
1 stop8h 49m
SeattleKey West
SEA Seattle/Tacoma Intl - EYW Key West
SEAEYW
Seattle/Tacoma Intl
Tue 10/20
10:48 pm-1:29 pm
1 stop11h 41m
Key West
Sat 10/24
4:20 pm-10:56 pm
1 stop9h 36m
SeattleKey West
SEA Seattle/Tacoma Intl - EYW Key West
SEAEYW
Seattle/Tacoma Intl
Sat 1/30
10:50 pm-2:13 pm
1 stop12h 23m
Key West
Wed 2/3
4:09 pm-10:45 pm
1 stop9h 36m
See travel insights to Key West from
How to get the cheapest flight ticket from Seattle to Key West
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the typical price of a round-trip flight between Seattle and Key West?
Prices are currently low for flights on this route.
Typical prices usually range from $558 to $716.The lowest price recently found on this route was $399.
What is the cheapest month to fly to Key West?
In general, July is the cheapest month to fly from Seattle to Key West. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $388. If you are unable to visit Key West during the month of July, then departing from Seattle during the month February is also very affordable. Most momondo users find prices during this month for around $476.
Can stopping save me money on Seattle to Key West flights?
You could potentially save up to 28% on your flight if you consider stops on a Seattle to Key West flight.
When to book flights from Seattle to Key West
Cheap Seattle to Key West (SEA to EYW) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Seattle to Key West
Frequently asked questions about flying from Seattle to Key West
How far is Seattle/Tacoma Intl to Key West by plane?
The distance between Seattle/Tacoma Intl and Key West is about 2719.2 mi. By plane, this route typically takes 7h 44m.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Key West Airport?
Prices for flights from Seattle/Tacoma Intl Airport to Key West Airport refresh daily.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Key West Airport?
The number of operators available for flights from Seattle/Tacoma Intl Airport to Key West Airport is 2 as of October 2026.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Key West Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Seattle/Tacoma Intl Airport to Key West Airport.
What documentation or ID do you need to fly to Key West Airport?
The travel and health documents required for your trip to Key West Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Key West Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from Seattle to Key West?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Seattle to Key West is American Airlines (78% of total bookings). The next most popular airline is Delta (22%).
Best airlines flying from Seattle to Key West
Compare and see reviews for airlines that fly from Seattle to Key West with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $384 | Free Cancellation | Rating 7.0 12,146 reviews | |||
| PriceFrom $588 | Free Cancellation | Rating 7.8 8,646 reviews |
Traveling to a place near Key West?
Book flights to Key West if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Seattle to Key West?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Key West from Seattle.
Can I find flights from Seattle to Key West with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for Seattle to Key West flights to just show those with flexible booking policies.
How can momondo help me find flights from Seattle to Key West?
momondo helps you find the best flight between Seattle and Key West by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.
I’m not ready to book a flight from Seattle to Key West right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Key West, momondo offers a useful price alert feature which will track prices for flights to Key West from Seattle and alert you when they change.