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Cheap flights from Washington to Key West from $279

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Key West departing on 9/21. 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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0 bags

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Cheap round-trip flights

American Airlines Logo
7:46 am - 6:35 pmSEA-EYW
7h 49m1 stop
American Airlines Logo
8:10 am - 5:24 pmEYW-SEA
12h 14m1 stop
$309American Airlines
Find Deal
Tue, Jan 13 - Wed, Jan 21
American Airlines Logo
10:45 pm - 11:08 amPDX-EYW
9h 23m1 stop
American Airlines Logo
4:59 pm - 11:26 pmEYW-PDX
9h 27m1 stop
$309American Airlines
Find Deal
Mon, Nov 10 - Sat, Nov 15
American Airlines Logo
12:27 am - 3:18 pmSEA-EYW
11h 51m2 stops
American Airlines Logo
3:49 pm - 11:11 pmEYW-SEA
10h 22m1 stop
$314American Airlines
Find Deal
Mon, Jan 12 - Wed, Jan 21
American Airlines Logo
9:56 pm - 11:13 amPDX-EYW
10h 17m1 stop
American Airlines Logo
2:30 pm - 11:59 pmEYW-PDX
12h 29m2 stops
$314American Airlines
Find Deal
Fri, Sep 12 - Fri, Sep 19
United Airlines Logo
11:50 pm - 2:04 pmSEA-EYW
11h 14m1 stop
United Airlines Logo
3:00 pm - 10:41 pmEYW-SEA
10h 41m1 stop
$409United Airlines
Find Deal
Thu, Nov 6 - Wed, Nov 12
Delta Logo
5:45 am - 8:12 pmGEG-EYW
11h 27m2 stops
Delta Logo
11:52 am - 9:26 pmEYW-GEG
12h 34m2 stops
$464Delta
Find Deal
Sat, Aug 30 - Wed, Sep 3
Delta Logo
7:20 am - 8:12 pmSEA-EYW
9h 52m1 stop
Delta Logo
7:00 am - 1:50 pmEYW-SEA
9h 50m1 stop
$529Delta
Find Deal
Wed, Aug 27 - Sun, Aug 31
Delta Logo
12:40 am - 1:02 pmPDX-EYW
9h 22m2 stops
Delta Logo
1:57 pm - 10:08 pmEYW-PDX
11h 11m1 stop
$592Delta
Find Deal
Fri, Oct 17 - Tue, Oct 28
United Airlines Logo
5:45 am - 4:01 pmPDX-EYW
31h 16m2 stops
United Airlines Logo
4:50 pm - 12:19 amEYW-PDX
34h 29m3 stops
$601United Airlines
Find Deal
Thu, Jan 22 - Mon, Jan 26
United Airlines Logo
3:25 pm - 12:46 pmSEA-EYW
18h 21m2 stops
United Airlines Logo
4:05 pm - 1:16 pmEYW-SEA
24h 11m3 stops
$639United Airlines
Find Deal
Tue, Jan 13 - Wed, Jan 21

American Airlines flights from State of Washington to Key West

Our best American Airlines deals on State of Washington to Key West flight tickets
American Airlines
Nov 10
PDX10:45 pmPortland
9h 23m
1 stop
EYW11:08 amKey West
Nov 15
EYW4:59 pmKey West
9h 27m
1 stop
PDX11:26 pmPortland
$309
Find similar
American Airlines
Sep 12
PDX9:56 pmPortland
10h 17m
1 stop
EYW11:13 amKey West
Sep 19
EYW2:30 pmKey West
12h 29m
2 stops
PDX11:59 pmPortland
$314
Find similar
American Airlines
Sep 12
PDX5:38 amPortland
10h 21m
2 stops
EYW6:59 pmKey West
Sep 19
EYW11:25 amKey West
13h 02m
2 stops
PDX9:27 pmPortland
$319
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Delta flights from State of Washington to Key West

Our best Delta deals on State of Washington to Key West flight tickets
Delta
Aug 30
GEG5:45 amSpokane
11h 27m
2 stops
EYW8:12 pmKey West
Sep 3
EYW11:52 amKey West
12h 34m
2 stops
GEG9:26 pmSpokane
$464
Find similar
Delta
Aug 23
GEG5:00 amSpokane
12h 12m
2 stops
EYW8:12 pmKey West
Aug 26
EYW7:00 amKey West
7h 35m
1 stop
GEG11:35 amSpokane
$504
Find similar
Delta
Aug 23
GEG5:00 amSpokane
12h 12m
2 stops
EYW8:12 pmKey West
Aug 26
EYW11:52 amKey West
12h 34m
2 stops
GEG9:26 pmSpokane
$509
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from State of Washington to Key West that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 16, 2025.
Use the filters below to find and compare flights from Washington to Key West that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleKey West

SEA - EYW

SEAEYW

Seattle/Tacoma Intl

Tue 1/13

7:46 am-6:35 pm

1 stop7h 49m

Key West

Wed 1/21

8:10 am-5:24 pm

1 stop12h 14m

$309

PortlandKey West

PDX - EYW

PDXEYW

Portland

Mon 11/10

10:45 pm-11:08 am

1 stop9h 23m

Key West

Sat 11/15

4:59 pm-11:26 pm

1 stop9h 27m

$309

SeattleKey West

SEA - EYW

SEAEYW

Seattle/Tacoma Intl

Mon 1/12

12:27 am-3:18 pm

2 stops11h 51m

Key West

Wed 1/21

3:49 pm-11:11 pm

1 stop10h 22m

$314

PortlandKey West

PDX - EYW

PDXEYW

Portland

Fri 9/12

9:56 pm-11:13 am

1 stop10h 17m

Key West

Fri 9/19

2:30 pm-11:59 pm

2 stops12h 29m

$314

SeattleKey West

SEA - EYW

SEAEYW

Seattle/Tacoma Intl

Thu 11/6

11:50 pm-2:04 pm

1 stop11h 14m

Key West

Wed 11/12

3:00 pm-10:41 pm

1 stop10h 41m

$409

SpokaneKey West

GEG - EYW

GEGEYW

Spokane

Sat 8/30

5:45 am-8:12 pm

2 stops11h 27m

Key West

Wed 9/3

11:52 am-9:26 pm

2 stops12h 34m

$464

SeattleKey West

SEA - EYW

SEAEYW

Seattle/Tacoma Intl

Wed 8/27

7:20 am-8:12 pm

1 stop9h 52m

Key West

Sun 8/31

7:00 am-1:50 pm

1 stop9h 50m

$529

PortlandKey West

PDX - EYW

PDXEYW

Portland

Fri 10/17

12:40 am-1:02 pm

2 stops9h 22m

Key West

Tue 10/28

1:57 pm-10:08 pm

1 stop11h 11m

$592

PortlandKey West

PDX - EYW

PDXEYW

Portland

Thu 1/22

5:45 am-4:01 pm

2 stops31h 16m

Key West

Mon 1/26

4:50 pm-12:19 am

3 stops34h 29m

$601

SeattleKey West

SEA - EYW

SEAEYW

Seattle/Tacoma Intl

Tue 1/13

3:25 pm-12:46 pm

2 stops18h 21m

Key West

Wed 1/21

4:05 pm-1:16 pm

3 stops24h 11m

$639

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
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See travel insights to Key West from

How to get the cheapest flight ticket from State of Washington 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 cheapest month to fly to Key West?

In general, January is the cheapest month to fly from State of Washington to Key West. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $483. If you are unable to visit Key West during the month of January, then departing from State of Washington during the month March is also very affordable. Most momondo users find prices during this month for around $493.

What is the cheapest day to depart on your flight to Key West?

On average, the least expensive day to fly to Key West from State of Washington is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $597. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from State of Washington to Key West for around $940.

What is the cheapest time of day to depart on your flight to Key West?

According to our data, the cheapest time of day to fly to Key West is in the morning. momondo users have found flights departing from State of Washington to Key West in the morning for as low as $674. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Key West are more costly in the evening, with an average ticket price of $756. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

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

You are more likely to see cheaper flights to Key West from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Key West for around $648 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Key West from State of Washington for as low as $407 on momondo.

Can stopping save me money on State of Washington to Key West flights?

You could potentially save up to 2% on your flight if you consider stops on a State of Washington to Key West flight.

Cheap State of Washington to Key West flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Key West

Best Price Found

$279

Fastest flight time

7h 03m

Direct flights

None

Airports in Key West

1 airport
The best one-way flight to Key West from State of Washington in the past 72 hours is $279. The best round-trip flight deal from State of Washington to Key West found on momondo in the last 72 hours is $309.
The fastest flight from State of Washington to Key West takes 7h 03m
There are no direct flights from State of Washington to Key West. Popular non-direct routes for this connection are Spokane Airport - Key West Airport, Seattle/Tacoma Intl Airport - Key West Airport and Portland Airport - Key West Airport.
There is 1 airport near Key West: Key West (EYW)
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  • When did momondo last update prices for flights from Washington to Key West Airport?

    Prices for flights from Washington to Key West Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Washington to Key West Airport?

  • How old do you have to be to fly from Washington to Key West Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington 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.

Best airlines flying from State of Washington to Key West

Compare and see reviews for airlines that fly from State of Washington to Key West with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $308Free CancellationRating
7.4
8,916 reviews
Search United Airlines flights
American AirlinesPriceFrom $308Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $373Free CancellationRating
8.0
7,985 reviews
Search Delta flights

Traveling to a place near Key West?

Book flights to Key West if you plan to visit one of these locations
Big Pine Key
Little Torch Key

Why use momondo?

Why should I use momondo to find a flight deal from Washington to Key West?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington to Key West. momondo saves you time and could save you money on your trip.

Can I find flights from Washington to Key West with flexible booking policies on momondo?

momondo does allow users to show only those flights to Key West from Washington which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Washington to Key West?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington to Key West.

I’m not ready to book a flight from Washington to Key West right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Key West from Washington. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Key West trip

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