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Cheap flights from Key West to Washington, D.C. from $86

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Key West to Washington, D.C. departing on 4/30. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap round-trip flights

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Allegiant Air Logo
9:58 am - 8:59 am
EYW
-
IAD
23h 01m
1 stop
Allegiant Air Logo
2:01 pm - 10:11 am
IAD
-
EYW
20h 10m
1 stop
$183Allegiant Air
jue., abr. 16 - dom., abr. 19
Allegiant Air Logo
2:04 pm - 8:59 am
EYW
-
IAD
18h 55m
2 stops
Allegiant Air Logo
2:01 pm - 10:11 am
IAD
-
EYW
20h 10m
1 stop
$213Allegiant Air
jue., abr. 16 - dom., abr. 19
Multiple Airlines Logo
11:46 am - 11:09 pm
EYW
-
IAD
11h 23m
2 stops
Multiple Airlines Logo
7:27 pm - 11:27 am
IAD
-
EYW
16h 00m
1 stop
$228Multiple Airlines
mié., may. 27 - jue., may. 28
Multiple Airlines Logo
1:06 pm - 10:11 am
EYW
-
IAD
21h 05m
1 stop
Multiple Airlines Logo
6:05 am - 11:11 am
IAD
-
EYW
29h 06m
2 stops
$245Multiple Airlines
vie., abr. 10 - mar., abr. 14
Multiple Airlines Logo
12:07 pm - 12:53 pm
EYW
-
IAD
24h 46m
1 stop
Multiple Airlines Logo
1:38 pm - 11:35 am
IAD
-
EYW
21h 57m
1 stop
$251Multiple Airlines
lun., ago. 24 - sáb., ago. 29
Multiple Airlines Logo
9:46 am - 5:54 pm
EYW
-
IAD
8h 08m
1 stop
Multiple Airlines Logo
10:25 pm - 12:21 pm
IAD
-
EYW
13h 56m
2 stops
$256Multiple Airlines
jue., abr. 9 - lun., abr. 13
Multiple Airlines Logo
1:01 pm - 2:20 pm
EYW
-
IAD
25h 19m
2 stops
Multiple Airlines Logo
8:30 pm - 9:06 am
IAD
-
EYW
12h 36m
1 stop
$271Multiple Airlines
mar., abr. 7 - sáb., abr. 11
United Airlines Logo
6:22 pm - 9:25 pm
EYW
-
IAD
3h 03mnonstop
United Airlines Logo
1:15 pm - 4:42 pm
IAD
-
EYW
3h 27mnonstop
$289United Airlines
jue., abr. 16 - dom., abr. 19
United Airlines Logo
6:22 pm - 9:25 pm
EYW
-
IAD
3h 03mnonstop
United Airlines Logo
6:00 am - 1:31 pm
IAD
-
EYW
7h 31m
1 stop
$299United Airlines
jue., abr. 16 - dom., abr. 19
American Airlines Logo
4:20 pm - 11:59 pm
EYW
-
IAD
7h 39m
1 stop
American Airlines Logo
6:25 am - 1:21 pm
IAD
-
EYW
6h 56m
1 stop
$309American Airlines
vie., may. 1 - dom., may. 3

Allegiant Air flights from Key West to Washington, D.C. Dulles Intl Airport

Our best Allegiant Air deals on Key West to Washington, D.C. Dulles Intl Airport flight tickets
Allegiant Air
Apr 16
EYW9:58 amKey West
23h 01m
1 stop
IAD8:59 amWashington, D.C. Dulles Intl
Apr 19
IAD2:01 pmWashington, D.C. Dulles Intl
20h 10m
1 stop
EYW10:11 amKey West
$183
Allegiant Air
Apr 16
EYW2:04 pmKey West
18h 55m
2 stops
IAD8:59 amWashington, D.C. Dulles Intl
Apr 19
IAD2:01 pmWashington, D.C. Dulles Intl
20h 10m
1 stop
EYW10:11 amKey West
$213

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

Our best United Airlines deals on Key West to Washington, D.C. Dulles Intl Airport flight tickets
United Airlines
Apr 16
EYW6:22 pmKey West
3h 03m
IAD9:25 pmWashington, D.C. Dulles Intl
Apr 19
IAD1:15 pmWashington, D.C. Dulles Intl
3h 27m
EYW4:42 pmKey West
$289
United Airlines
Apr 16
EYW6:22 pmKey West
3h 03m
IAD9:25 pmWashington, D.C. Dulles Intl
Apr 19
IAD6:00 amWashington, D.C. Dulles Intl
7h 31m
1 stop
EYW1:31 pmKey West
$299
United Airlines
Apr 16
EYW6:22 pmKey West
3h 03m
IAD9:25 pmWashington, D.C. Dulles Intl
Apr 20
IAD1:15 pmWashington, D.C. Dulles Intl
3h 27m
EYW4:42 pmKey West
$379

momondo Fare Finder

 
Customize your flight search to find flights from Key West to Washington, D.C. Dulles Intl Airport 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 25, 2026.
Use the filters below to find and compare flights from Key West to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

jue. 4/16

9:58 am-8:59 am

1 stop23h 01m

Washington, D.C. Dulles Intl

dom. 4/19

2:01 pm-10:11 am

1 stop20h 10m

$183

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

jue. 4/16

2:04 pm-8:59 am

2 stops18h 55m

Washington, D.C. Dulles Intl

dom. 4/19

2:01 pm-10:11 am

1 stop20h 10m

$213

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

mié. 5/27

11:46 am-11:09 pm

2 stops11h 23m

Washington, D.C. Dulles Intl

jue. 5/28

7:27 pm-11:27 am

1 stop16h 00m

$228

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

vie. 4/10

1:06 pm-10:11 am

1 stop21h 05m

Washington, D.C. Dulles Intl

mar. 4/14

6:05 am-11:11 am

2 stops29h 06m

$245

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

lun. 8/24

12:07 pm-12:53 pm

1 stop24h 46m

Washington, D.C. Dulles Intl

sáb. 8/29

1:38 pm-11:35 am

1 stop21h 57m

$251

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

jue. 4/9

9:46 am-5:54 pm

1 stop8h 08m

Washington, D.C. Dulles Intl

lun. 4/13

10:25 pm-12:21 pm

2 stops13h 56m

$256

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

mar. 4/7

1:01 pm-2:20 pm

2 stops25h 19m

Washington, D.C. Dulles Intl

sáb. 4/11

8:30 pm-9:06 am

1 stop12h 36m

$271
Quickest round-trip

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

jue. 4/16

6:22 pm-9:25 pm

Nonstop3h 03m

Washington, D.C. Dulles Intl

dom. 4/19

1:15 pm-4:42 pm

Nonstop3h 27m

$289

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

jue. 4/16

6:22 pm-9:25 pm

Nonstop3h 03m

Washington, D.C. Dulles Intl

dom. 4/19

6:00 am-1:31 pm

1 stop7h 31m

$299

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

vie. 5/1

4:20 pm-11:59 pm

1 stop7h 39m

Washington, D.C. Dulles Intl

dom. 5/3

6:25 am-1:21 pm

1 stop6h 56m

$309

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 Washington, D.C. from

How to get the cheapest flight ticket from Key West to Washington, D.C. Dulles Intl Airport

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 day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Our data shows that Thursday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $279. When flying out on a Wednesday, the most expensive travel day of the week, you can expect to see flight prices from Key West to Washington, D.C. Dulles Intl Airport for around $357.

What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Flying to Washington, D.C. Dulles Intl Airport from Key West in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $327 when looking at flights departing in the afternoon. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $409 on average. Flights to Washington, D.C. Dulles Intl Airport from Key West at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

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

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

There are 4 cabin classes available to choose from on Key West to Washington, D.C. Dulles Intl 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 Key West to Washington, D.C. Dulles Intl Airport flights?

You could potentially save up to 59% on your flight if you consider stops on a Key West to Washington, D.C. Dulles Intl Airport flight.

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

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

Cheap Key West to Washington, D.C. Dulles Intl Airport (EYW to IAD) flight deals and tips

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

Fastest flight time

2h 50m

Direct flights

Every day
The fastest flight from Key West to Washington, D.C. Dulles Intl Airport takes 2h 50m
Direct flights go from Key West to Washington, D.C. Dulles Intl Airport every day.
Search flight deals

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

    The distance between Key West and Washington, D.C. Dulles Intl is about 1025.8 mi. 2h 50m is a normal flight duration for this route.

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

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

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

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

  • What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

    The required travel and health documents for your Washington, D.C. Dulles Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington, D.C. Dulles Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

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

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

Compare and see reviews for airlines that fly from Key West to Washington, D.C. Dulles Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $223Free CancellationRating
7.9
8,327 reviews
Search Delta flights

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
National Harbor
Gettysburg
Arlington
Winchester
Waldorf
Woodbridge
Laurel
Colonial Beach
Gaithersburg
Towson
Silver Spring
Fredericksburg
Rockville
Tysons
Manassas
Sterling
Linthicum Heights
Springfield
Bethesda

Why use momondo?

Why should I use momondo to find a flight deal from Key West to Washington, D.C.?

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 Key West to Washington, D.C. for you.

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

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

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

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 Key West to Washington, D.C..

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

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

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