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Cheap flights from Washington, D.C. Dulles Intl Airport to Key West from $100

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. Dulles Intl Airport to Key West departing on 4/5. 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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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to Key West

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
1:15 pm - 4:36 pm
IAD
-
EYW
3h 21mnonstop
United Airlines Logo
6:28 pm - 9:18 pm
EYW
-
IAD
2h 50mnonstop
$306United Airlines
mar., mar. 17 - mar., mar. 24
Multiple Airlines Logo
8:30 pm - 9:06 am
IAD
-
EYW
12h 36m
1 stop
Multiple Airlines Logo
2:48 pm - 5:34 pm
EYW
-
IAD
26h 46m
2 stops
$307Multiple Airlines
sáb., abr. 11 - dom., abr. 19
United Airlines Logo
6:00 am - 1:23 pm
IAD
-
EYW
7h 23m
1 stop
United Airlines Logo
6:28 pm - 9:18 pm
EYW
-
IAD
2h 50mnonstop
$308United Airlines
mié., mar. 18 - vie., mar. 27
United Airlines Logo
1:15 pm - 4:42 pm
IAD
-
EYW
3h 27mnonstop
United Airlines Logo
6:22 pm - 9:25 pm
EYW
-
IAD
3h 03mnonstop
$309United Airlines
mié., abr. 8 - mié., abr. 15
Multiple Airlines Logo
4:09 pm - 10:11 am
IAD
-
EYW
18h 02m
1 stop
Multiple Airlines Logo
10:32 pm - 12:36 am
EYW
-
IAD
50h 04m
2 stops
$310Multiple Airlines
dom., mar. 29 - dom., abr. 5
Multiple Airlines Logo
9:30 pm - 2:42 pm
IAD
-
EYW
17h 12m
2 stops
Multiple Airlines Logo
11:51 am - 7:24 am
EYW
-
IAD
19h 33m
1 stop
$311Multiple Airlines
vie., mar. 20 - mié., mar. 25
United Airlines Logo
1:15 pm - 4:42 pm
IAD
-
EYW
3h 27mnonstop
United Airlines Logo
6:22 pm - 9:25 pm
EYW
-
IAD
3h 03mnonstop
$312United Airlines
vie., abr. 10 - mar., abr. 14
Multiple Airlines Logo
8:15 am - 12:26 pm
IAD
-
EYW
28h 11m
1 stop
Multiple Airlines Logo
12:25 pm - 7:20 am
EYW
-
IAD
18h 55m
2 stops
$313Multiple Airlines
dom., mar. 15 - mié., mar. 18
Multiple Airlines Logo
3:42 pm - 10:11 am
IAD
-
EYW
18h 29m
1 stop
Multiple Airlines Logo
12:25 pm - 11:56 pm
EYW
-
IAD
11h 31m
2 stops
$314Multiple Airlines
jue., mar. 19 - mar., mar. 24
United Airlines Logo
1:15 pm - 4:42 pm
IAD
-
EYW
3h 27mnonstop
United Airlines Logo
6:22 pm - 9:25 pm
EYW
-
IAD
3h 03mnonstop
$315United Airlines
vie., abr. 10 - lun., abr. 13

United Airlines flights from Washington, D.C. Dulles Intl Airport to Key West

Our best United Airlines deals on Washington, D.C. Dulles Intl Airport to Key West flight tickets
United Airlines
Mar 17
IAD1:15 pmWashington, D.C. Dulles Intl
3h 21m
EYW4:36 pmKey West
Mar 24
EYW6:28 pmKey West
2h 50m
IAD9:18 pmWashington, D.C. Dulles Intl
$306
United Airlines
Mar 18
IAD6:00 amWashington, D.C. Dulles Intl
7h 23m
1 stop
EYW1:23 pmKey West
Mar 27
EYW6:28 pmKey West
2h 50m
IAD9:18 pmWashington, D.C. Dulles Intl
$308
United Airlines
Apr 8
IAD1:15 pmWashington, D.C. Dulles Intl
3h 27m
EYW4:42 pmKey West
Apr 15
EYW6:22 pmKey West
3h 03m
IAD9:25 pmWashington, D.C. Dulles Intl
$309

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

Our best American Airlines deals on Washington, D.C. Dulles Intl Airport to Key West flight tickets
American Airlines
Apr 5
IAD4:46 pmWashington, D.C. Dulles Intl
5h 51m
1 stop
EYW10:37 pmKey West
Apr 9
EYW11:56 amKey West
7h 29m
1 stop
IAD7:25 pmWashington, D.C. Dulles Intl
$317
American Airlines
May 16
IAD3:26 pmWashington, D.C. Dulles Intl
7h 10m
1 stop
EYW10:36 pmKey West
May 20
EYW11:24 amKey West
8h 01m
2 stops
IAD7:25 pmWashington, D.C. Dulles Intl
$322
American Airlines
Apr 26
IAD6:25 amWashington, D.C. Dulles Intl
10h 05m
2 stops
EYW4:30 pmKey West
Apr 30
EYW3:58 pmKey West
8h 01m
2 stops
IAD11:59 pmWashington, D.C. Dulles Intl
$327

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport 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 marzo 5, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Key West that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

mar. 3/17

1:15 pm-4:36 pm

Nonstop3h 21m

Key West

mar. 3/24

6:28 pm-9:18 pm

Nonstop2h 50m

$306

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

sáb. 4/11

8:30 pm-9:06 am

1 stop12h 36m

Key West

dom. 4/19

2:48 pm-5:34 pm

2 stops26h 46m

$307

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

mié. 3/18

6:00 am-1:23 pm

1 stop7h 23m

Key West

vie. 3/27

6:28 pm-9:18 pm

Nonstop2h 50m

$308

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

mié. 4/8

1:15 pm-4:42 pm

Nonstop3h 27m

Key West

mié. 4/15

6:22 pm-9:25 pm

Nonstop3h 03m

$309

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

dom. 3/29

4:09 pm-10:11 am

1 stop18h 02m

Key West

dom. 4/5

10:32 pm-12:36 am

2 stops50h 04m

$310

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

vie. 3/20

9:30 pm-2:42 pm

2 stops17h 12m

Key West

mié. 3/25

11:51 am-7:24 am

1 stop19h 33m

$311

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

vie. 4/10

1:15 pm-4:42 pm

Nonstop3h 27m

Key West

mar. 4/14

6:22 pm-9:25 pm

Nonstop3h 03m

$312

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

dom. 3/15

8:15 am-12:26 pm

1 stop28h 11m

Key West

mié. 3/18

12:25 pm-7:20 am

2 stops18h 55m

$313

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

jue. 3/19

3:42 pm-10:11 am

1 stop18h 29m

Key West

mar. 3/24

12:25 pm-11:56 pm

2 stops11h 31m

$314

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

vie. 4/10

1:15 pm-4:42 pm

Nonstop3h 27m

Key West

lun. 4/13

6:22 pm-9:25 pm

Nonstop3h 03m

$315

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. Dulles Intl Airport 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, July is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Key West. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $328. If you are unable to visit Key West during the month of July, then departing from Washington, D.C. Dulles Intl Airport during the month August is also very affordable. Most momondo users find prices during this month for around $363.

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. Dulles Intl Airport is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $374. 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. Dulles Intl Airport to Key West for around $512.

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 at noon. momondo users have found flights departing from Washington, D.C. Dulles Intl Airport to Key West at noon for as low as $384. 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 morning, with an average ticket price of $472. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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

Fly from Washington, D.C. Dulles Intl to Key West for the best Washington, D.C. Dulles Intl - 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. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Key West for around $464 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. Dulles Intl Airport for as low as $287 on momondo.

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

There are 3 cabin classes available to choose from on Washington, D.C. Dulles Intl 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. Dulles Intl Airport to Key West flights?

No. A direct flight is the cheapest option for a flight between Washington, D.C. Dulles Intl Airport to Key West.

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

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport to Key West (IAD to EYW) flight deals and tips

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

Best Price Found

$367

Fastest flight time

3h 21m

Direct flights

Every day

Airports in Key West

1 airport
The best one-way flight to Key West from Washington, D.C. Dulles Intl Airport in the past 72 hours is $367. The best round-trip flight deal from Washington, D.C. Dulles Intl Airport to Key West found on momondo in the last 72 hours is $360.
The fastest flight from Washington, D.C. Dulles Intl Airport to Key West takes 3h 21m
Direct flights go from Washington, D.C. Dulles Intl Airport to Key West every day.
There is 1 airport in Key West. From Washington, D.C. Dulles Intl Airport there are direct flights to Key West (EYW).
Search flight deals

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

    Washington, D.C. Dulles Intl and Key West are 1025.8 mi apart from one another. Flights usually cover this in 3h 21m, depending on flying conditions and air traffic around both airports.

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

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

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

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

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

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

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Key West with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $179Free CancellationRating
7.9
8,258 reviews
Search Delta flights
United AirlinesPriceFrom $295Free CancellationRating
7.4
9,403 reviews
Search United Airlines flights
American AirlinesPriceFrom $354Free CancellationRating
7.1
11,392 reviews
Search American Airlines flights

  • United Airlines Flights From Washington, D.C. Dulles Intl Airport to Key West

    United Airlines flight deals from Washington, D.C. Dulles Intl Airport to Key West start from $295 round-trip. Over the 3 United Airlines flights for this route in a normal week, average airfare is usually $469 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?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington, D.C. to Key West for you.

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?

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, D.C. to Key West.

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

If you are not ready to book a flight from Washington, D.C. to Key West now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Key West and let you know when they change.

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