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Cheap flights from Washington, D.C. to Key West from $99

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, D.C. to Key West departing on 12/21. 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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Find the cheapest flights from Washington, D.C. to Key West

Cheap round-trip flights

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Spirit Airlines Logo
5:40 am - 11:20 amBWI-EYW
5h 40m1 stop
Spirit Airlines Logo
12:15 pm - 5:43 pmEYW-BWI
5h 28m1 stop
$205Spirit Airlines
Find Deal
Thu, Nov 20 - Thu, Nov 27
Spirit Airlines Logo
5:40 am - 11:20 amBWI-EYW
5h 40m1 stop
Spirit Airlines Logo
12:15 pm - 11:17 pmEYW-BWI
11h 02m1 stop
$220Spirit Airlines
Find Deal
Thu, Nov 20 - Sun, Nov 23
Multiple Airlines Logo
6:23 pm - 11:20 amBWI-EYW
16h 57m1 stop
Multiple Airlines Logo
8:55 am - 8:29 amEYW-BWI
23h 34m1 stop
$222Multiple Airlines
Find Deal
Wed, Dec 10 - Mon, Dec 15
Multiple Airlines Logo
9:36 pm - 11:20 amBWI-EYW
13h 44m1 stop
Multiple Airlines Logo
6:33 pm - 10:50 amEYW-BWI
16h 17m1 stop
$223Multiple Airlines
Find Deal
Wed, Nov 12 - Wed, Nov 19
American Airlines Logo
5:54 pm - 10:44 pmBWI-EYW
4h 50m1 stop
American Airlines Logo
4:40 pm - 11:43 pmEYW-BWI
7h 03m1 stop
$259American Airlines
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Thu, Dec 18 - Tue, Dec 23
American Airlines Logo
2:46 pm - 9:47 pmBWI-EYW
7h 01m1 stop
American Airlines Logo
1:53 pm - 11:46 pmEYW-BWI
9h 53m2 stops
$264American Airlines
Find Deal
Thu, Jan 22 - Sat, Jan 31
Delta Logo
1:50 pm - 8:06 pmBWI-EYW
6h 16m1 stop
Delta Logo
7:40 am - 12:36 pmEYW-BWI
4h 56m1 stop
$271Delta
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Fri, Oct 31 - Wed, Nov 5
Delta Logo
1:41 pm - 8:06 pmBWI-EYW
6h 25m1 stop
Delta Logo
1:57 pm - 7:44 pmEYW-BWI
5h 47m1 stop
$274Delta
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Thu, Oct 30 - Mon, Nov 3
United Airlines Logo
6:00 am - 2:04 pmIAD-EYW
8h 04m1 stop
United Airlines Logo
3:00 pm - 10:58 pmEYW-IAD
7h 58m1 stop
$331United Airlines
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Sat, Nov 15 - Wed, Nov 19
United Airlines Logo
1:00 pm - 4:23 pmIAD-EYW
3h 23mnonstop
United Airlines Logo
1:25 pm - 4:14 pmEYW-IAD
2h 49mnonstop
$344United Airlines
Find Deal
Thu, Dec 18 - Sun, Dec 21

Spirit Airlines flights from Washington, D.C. to Key West

Our best Spirit Airlines deals on Washington, D.C. to Key West flight tickets
Spirit Airlines
Nov 20
BWI5:40 amBaltimore/Washington
5h 40m
1 stop
EYW11:20 amKey West
Nov 27
EYW12:15 pmKey West
5h 28m
1 stop
BWI5:43 pmBaltimore/Washington
$205
Find similar
Spirit Airlines
Nov 20
BWI5:40 amBaltimore/Washington
5h 40m
1 stop
EYW11:20 amKey West
Nov 23
EYW12:15 pmKey West
11h 02m
1 stop
BWI11:17 pmBaltimore/Washington
$220
Find similar
Spirit Airlines
Nov 5
BWI9:36 pmBaltimore/Washington
13h 44m
1 stop
EYW11:20 amKey West
Nov 9
EYW12:15 pmKey West
22h 23m
1 stop
BWI10:38 amBaltimore/Washington
$238
Find similar

American Airlines flights from Washington, D.C. to Key West

Our best American Airlines deals on Washington, D.C. to Key West flight tickets
American Airlines
Dec 18
BWI5:54 pmBaltimore/Washington
4h 50m
1 stop
EYW10:44 pmKey West
Dec 23
EYW4:40 pmKey West
7h 03m
1 stop
BWI11:43 pmBaltimore/Washington
$259
Find similar
American Airlines
Jan 22
BWI2:46 pmBaltimore/Washington
7h 01m
1 stop
EYW9:47 pmKey West
Jan 31
EYW1:53 pmKey West
9h 53m
2 stops
BWI11:46 pmBaltimore/Washington
$264
Find similar
American Airlines
Jan 23
BWI2:46 pmBaltimore/Washington
9h 10m
2 stops
EYW11:56 pmKey West
Jan 28
EYW1:33 pmKey West
7h 50m
2 stops
BWI9:23 pmBaltimore/Washington
$269
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. 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 October 14, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Key West that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BaltimoreKey West

BWI - EYW

BWIEYW

Baltimore/Washington

Thu 11/20

5:40 am-11:20 am

1 stop5h 40m

Key West

Thu 11/27

12:15 pm-5:43 pm

1 stop5h 28m

$205

BaltimoreKey West

BWI - EYW

BWIEYW

Baltimore/Washington

Thu 11/20

5:40 am-11:20 am

1 stop5h 40m

Key West

Sun 11/23

12:15 pm-11:17 pm

1 stop11h 02m

$220

BaltimoreKey West

BWI - EYW

BWIEYW

Baltimore/Washington

Wed 12/10

6:23 pm-11:20 am

1 stop16h 57m

Key West

Mon 12/15

8:55 am-8:29 am

1 stop23h 34m

$222

BaltimoreKey West

BWI - EYW

BWIEYW

Baltimore/Washington

Wed 11/12

9:36 pm-11:20 am

1 stop13h 44m

Key West

Wed 11/19

6:33 pm-10:50 am

1 stop16h 17m

$223

BaltimoreKey West

BWI - EYW

BWIEYW

Baltimore/Washington

Thu 12/18

5:54 pm-10:44 pm

1 stop4h 50m

Key West

Tue 12/23

4:40 pm-11:43 pm

1 stop7h 03m

$259

BaltimoreKey West

BWI - EYW

BWIEYW

Baltimore/Washington

Thu 1/22

2:46 pm-9:47 pm

1 stop7h 01m

Key West

Sat 1/31

1:53 pm-11:46 pm

2 stops9h 53m

$264

BaltimoreKey West

BWI - EYW

BWIEYW

Baltimore/Washington

Fri 10/31

1:50 pm-8:06 pm

1 stop6h 16m

Key West

Wed 11/5

7:40 am-12:36 pm

1 stop4h 56m

$271

BaltimoreKey West

BWI - EYW

BWIEYW

Baltimore/Washington

Thu 10/30

1:41 pm-8:06 pm

1 stop6h 25m

Key West

Mon 11/3

1:57 pm-7:44 pm

1 stop5h 47m

$274

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Sat 11/15

6:00 am-2:04 pm

1 stop8h 04m

Key West

Wed 11/19

3:00 pm-10:58 pm

1 stop7h 58m

$331

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Thu 12/18

1:00 pm-4:23 pm

Nonstop3h 23m

Key West

Sun 12/21

1:25 pm-4:14 pm

Nonstop2h 49m

$344

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Key West from

How to get the cheapest flight ticket from Washington, D.C. 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 Washington, D.C. to Key West. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $369. If you are unable to visit Key West during the month of January, then departing from Washington, D.C. during the month September is also very affordable. Most momondo users find prices during this month for around $374.

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 Washington, D.C. is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $362. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Washington, D.C. to Key West for around $526.

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 afternoon. momondo users have found flights departing from Washington, D.C. to Key West in the afternoon for as low as $340. 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 $559. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Washington, D.C. to Key West flight route?

Fly from Washington, D.C. Reagan-National to Key West for the best Washington, D.C. - Key West flight prices

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

You are more likely to see cheaper flights to Key West from Washington, D.C. when booking weeks ahead of your departure date. In general, you can expect to find flights to Key West for around $486 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Key West from Washington, D.C. for as low as $364 on momondo.

What cabin class options are available on Washington, D.C. to Key West flights?

There are 3 cabin classes available to choose from on Washington, D.C. to Key West flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Washington, D.C. to Key West flights?

You could potentially save up to 33% on your flight if you consider stops on a Washington, D.C. to Key West flight.

How have Washington, D.C. to Key West flight prices changed over time?

As of October 2025, prices for Washington, D.C. to Key West flights are approximately 133% more expensive when compared to flights at the same time last year.

When to book flights from Washington, D.C. to Key West

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. to Key West according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. to Key West (WAS to EYW) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Key West

Best Price Found

$258

Fastest flight time

2h 56m

Direct flights

Every day

Airports in Key West

1 airport
The best one-way flight to Key West from Washington, D.C. in the past 72 hours is $258. The best round-trip flight deal from Washington, D.C. to Key West found on momondo in the last 72 hours is $354.
The fastest flight from Washington, D.C. to Key West takes 2h 56m
Direct flights go from Washington, D.C. to Key West every day.
There is 1 airport near Key West: Key West (EYW)
Search flight deals

  • How far is Washington, D.C. to Key West by plane?

    The straight-line distance from Washington, D.C. to Key West is 1029.2 mi. In terms of flight time, this usually takes a little over 2h 56m.

  • When did momondo last update prices for flights from Washington, D.C. to Key West Airport?

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

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

  • How old do you have to be to fly from Washington, D.C. to Key West Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to Key West Airport.

  • What documentation or ID do you need to fly to Key West Airport?

    The travel and health documents you'll need for your trip to Key West Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Key West Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Washington, D.C. to Key West?

  • What is the most popular airline from Washington, D.C. to Key West?

Best airlines flying from Washington, D.C. to Key West

Compare and see reviews for airlines that fly from Washington, D.C. to Key West with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $105Free CancellationRating
6.3
8,092 reviews
Search Spirit Airlines flights
DeltaPriceFrom $117Free CancellationRating
7.9
7,973 reviews
Search Delta flights
United AirlinesPriceFrom $186Free CancellationRating
7.4
8,974 reviews
Search United Airlines flights
American AirlinesPriceFrom $258Free CancellationRating
7.2
11,045 reviews
Search American Airlines flights

  • American Airlines Flights From Washington, D.C. to Key West

    American Airlines flight deals from Washington, D.C. to Key West start from $258 round-trip. Over the 8 American Airlines flights for this route in a normal week, average airfare is usually $465 round-trip - but some users have found much cheaper deals with momondo.

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, D.C. to Key West?

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

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

Yes. momondo allows you to filter the results for Washington, D.C. to Key West flights to just show those with flexible booking policies.

How can momondo help me find flights from Washington, D.C. to Key West?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Key West from Washington, D.C..

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

Price alerts on flights to Key West from Washington, D.C. are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Key West trip

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