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Cheap flights from Key West to Washington, D.C. from $88

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 4/29. 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

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United Airlines Logo
6:35 pm - 9:25 pm
EYW
-
IAD
2h 50mnonstop
United Airlines Logo
12:50 pm - 4:07 pm
IAD
-
EYW
3h 17mnonstop
$229United Airlines
Thu, Feb 26 - Sun, Mar 1
United Airlines Logo
4:52 pm - 11:21 pm
EYW
-
IAD
6h 29m
1 stop
United Airlines Logo
12:50 pm - 4:07 pm
IAD
-
EYW
3h 17mnonstop
$239United Airlines
Thu, Feb 26 - Sun, Mar 1
Multiple Airlines Logo
12:25 pm - 12:36 am
EYW
-
IAD
12h 11m
2 stops
Multiple Airlines Logo
2:01 pm - 10:11 am
IAD
-
EYW
20h 10m
1 stop
$258Multiple Airlines
Thu, Apr 9 - Sun, Apr 12
United Airlines Logo
6:35 pm - 9:25 pm
EYW
-
IAD
2h 50mnonstop
United Airlines Logo
12:50 pm - 4:07 pm
IAD
-
EYW
3h 17mnonstop
$279United Airlines
Thu, Feb 19 - Mon, Feb 23
Multiple Airlines Logo
9:46 am - 10:11 am
EYW
-
IAD
24h 25m
1 stop
Multiple Airlines Logo
2:01 pm - 10:11 am
IAD
-
EYW
20h 10m
1 stop
$283Multiple Airlines
Thu, Apr 9 - Sun, Apr 12
United Airlines Logo
6:35 pm - 9:25 pm
EYW
-
IAD
2h 50mnonstop
United Airlines Logo
6:00 am - 1:15 pm
IAD
-
EYW
7h 15m
1 stop
$289United Airlines
Thu, Feb 19 - Mon, Feb 23
Delta Logo
6:19 pm - 12:42 am
EYW
-
IAD
6h 23m
1 stop
Delta Logo
6:00 am - 11:25 am
IAD
-
EYW
5h 25m
1 stop
$299Delta
Fri, May 1 - Sun, May 3
United Airlines Logo
6:40 pm - 9:20 pm
EYW
-
IAD
2h 40mnonstop
United Airlines Logo
1:15 pm - 4:36 pm
IAD
-
EYW
3h 21mnonstop
$304United Airlines
Mon, Mar 2 - Mon, Mar 9
United Airlines Logo
2:15 pm - 9:03 pm
EYW
-
IAD
6h 48m
1 stop
United Airlines Logo
12:50 pm - 4:07 pm
IAD
-
EYW
3h 17mnonstop
$314United Airlines
Thu, Feb 26 - Sun, Mar 1
United Airlines Logo
4:52 pm - 11:21 pm
EYW
-
IAD
6h 29m
1 stop
United Airlines Logo
6:00 am - 1:18 pm
IAD
-
EYW
7h 18m
1 stop
$324United Airlines
Thu, Feb 26 - Sun, Mar 1

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
Feb 26
EYW6:35 pmKey West
2h 50m
IAD9:25 pmWashington, D.C. Dulles Intl
Mar 1
IAD12:50 pmWashington, D.C. Dulles Intl
3h 17m
EYW4:07 pmKey West
$229
United Airlines
Feb 26
EYW4:52 pmKey West
6h 29m
1 stop
IAD11:21 pmWashington, D.C. Dulles Intl
Mar 1
IAD12:50 pmWashington, D.C. Dulles Intl
3h 17m
EYW4:07 pmKey West
$239
United Airlines
Feb 19
EYW6:35 pmKey West
2h 50m
IAD9:25 pmWashington, D.C. Dulles Intl
Feb 23
IAD12:50 pmWashington, D.C. Dulles Intl
3h 17m
EYW4:07 pmKey West
$279

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

Our best American Airlines deals on Key West to Washington, D.C. Dulles Intl Airport flight tickets
American Airlines
May 1
EYW3:58 pmKey West
8h 01m
2 stops
IAD11:59 pmWashington, D.C. Dulles Intl
May 3
IAD6:25 amWashington, D.C. Dulles Intl
6h 56m
1 stop
EYW1:21 pmKey West
$392
American Airlines
Feb 19
EYW7:45 amKey West
5h 47m
1 stop
IAD1:32 pmWashington, D.C. Dulles Intl
Feb 21
IAD4:46 pmWashington, D.C. Dulles Intl
5h 51m
1 stop
EYW10:37 pmKey West
$399
American Airlines
Jun 10
EYW4:45 pmKey West
5h 13m
1 stop
IAD9:58 pmWashington, D.C. Dulles Intl
Jun 13
IAD1:06 pmWashington, D.C. Dulles Intl
5h 46m
1 stop
EYW6:52 pmKey West
$429

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 February 6, 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

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Thu 2/26

6:35 pm-9:25 pm

Nonstop2h 50m

Washington, D.C. Dulles Intl

Sun 3/1

12:50 pm-4:07 pm

Nonstop3h 17m

$229

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Thu 2/26

4:52 pm-11:21 pm

1 stop6h 29m

Washington, D.C. Dulles Intl

Sun 3/1

12:50 pm-4:07 pm

Nonstop3h 17m

$239

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Thu 4/9

12:25 pm-12:36 am

2 stops12h 11m

Washington, D.C. Dulles Intl

Sun 4/12

2:01 pm-10:11 am

1 stop20h 10m

$258

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Thu 2/19

6:35 pm-9:25 pm

Nonstop2h 50m

Washington, D.C. Dulles Intl

Mon 2/23

12:50 pm-4:07 pm

Nonstop3h 17m

$279

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Thu 4/9

9:46 am-10:11 am

1 stop24h 25m

Washington, D.C. Dulles Intl

Sun 4/12

2:01 pm-10:11 am

1 stop20h 10m

$283

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Thu 2/19

6:35 pm-9:25 pm

Nonstop2h 50m

Washington, D.C. Dulles Intl

Mon 2/23

6:00 am-1:15 pm

1 stop7h 15m

$289

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Fri 5/1

6:19 pm-12:42 am

1 stop6h 23m

Washington, D.C. Dulles Intl

Sun 5/3

6:00 am-11:25 am

1 stop5h 25m

$299

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Mon 3/2

6:40 pm-9:20 pm

Nonstop2h 40m

Washington, D.C. Dulles Intl

Mon 3/9

1:15 pm-4:36 pm

Nonstop3h 21m

$304

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Thu 2/26

2:15 pm-9:03 pm

1 stop6h 48m

Washington, D.C. Dulles Intl

Sun 3/1

12:50 pm-4:07 pm

Nonstop3h 17m

$314

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Thu 2/26

4:52 pm-11:21 pm

1 stop6h 29m

Washington, D.C. Dulles Intl

Sun 3/1

6:00 am-1:18 pm

1 stop7h 18m

$324

Flights are sorted by cheapest round-trip flights 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 Wednesday 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 $357. When flying out on a Friday, 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 $613.

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 $279 when looking at flights departing in the afternoon. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $608 on average. Flights to Washington, D.C. Dulles Intl Airport from Key West in the morning 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.

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 40m

Direct flights

Every day
The fastest flight from Key West to Washington, D.C. Dulles Intl Airport takes 2h 40m
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 40m 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
8,151 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
Tysons
Laurel
Colonial Beach
Silver Spring
Towson
Fredericksburg
Gaithersburg
Rockville
Manassas
Springfield
Sterling
Fairfax
Linthicum Heights

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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