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Cheap flights from Key West to Washington, D.C. from $126

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 7/17. 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

Find the cheapest flights from Key West to Washington, D.C.

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
1:11 pm - 11:43 am
EYW
-
IAD
22h 32m
1 stop
Multiple Airlines Logo
6:09 pm - 12:34 pm
IAD
-
EYW
18h 25m
2 stops
$265Multiple Airlines
Fri, Aug 21 - Mon, Aug 24
Multiple Airlines Logo
10:59 am - 11:43 am
EYW
-
IAD
24h 44m
1 stop
Multiple Airlines Logo
12:28 pm - 12:34 pm
IAD
-
EYW
24h 06m
1 stop
$286Multiple Airlines
Fri, Aug 21 - Mon, Aug 24
Multiple Airlines Logo
12:07 pm - 12:26 pm
EYW
-
IAD
24h 19m
1 stop
Multiple Airlines Logo
5:40 pm - 11:06 am
IAD
-
EYW
17h 26m
2 stops
$305Multiple Airlines
Fri, Jul 10 - Tue, Jul 14
Multiple Airlines Logo
10:59 am - 7:09 pm
EYW
-
IAD
8h 10m
1 stop
Multiple Airlines Logo
9:21 am - 12:19 pm
IAD
-
EYW
26h 58m
1 stop
$306Multiple Airlines
Thu, Sep 24 - Sun, Sep 27
Delta Logo
11:45 am - 6:26 pm
EYW
-
IAD
6h 41m
1 stop
Delta Logo
6:00 am - 10:58 am
IAD
-
EYW
4h 58m
1 stop
$309Delta
Thu, Oct 8 - Sun, Oct 11
Multiple Airlines Logo
10:59 am - 7:09 pm
EYW
-
IAD
8h 10m
1 stop
Multiple Airlines Logo
9:16 pm - 11:19 am
IAD
-
EYW
14h 03m
2 stops
$318Multiple Airlines
Thu, Sep 24 - Sun, Sep 27
Multiple Airlines Logo
12:07 pm - 6:33 pm
EYW
-
IAD
6h 26m
1 stop
Multiple Airlines Logo
8:33 pm - 11:27 am
IAD
-
EYW
14h 54m
2 stops
$329Multiple Airlines
Fri, Jul 24 - Sun, Jul 26
Delta Logo
6:18 pm - 12:41 am
EYW
-
IAD
6h 23m
1 stop
Delta Logo
10:21 am - 5:23 pm
IAD
-
EYW
7h 02m
1 stop
$334Delta
Tue, Jul 14 - Sun, Jul 19
Multiple Airlines Logo
1:14 pm - 11:43 am
EYW
-
IAD
22h 29m
1 stop
Multiple Airlines Logo
5:40 pm - 10:05 am
IAD
-
EYW
40h 25m
2 stops
$342Multiple Airlines
Tue, Jul 21 - Tue, Jul 28
Multiple Airlines Logo
11:04 am - 7:38 pm
EYW
-
IAD
8h 34m
2 stops
Multiple Airlines Logo
1:32 pm - 11:27 am
IAD
-
EYW
21h 55m
1 stop
$351Multiple Airlines
Thu, Jul 9 - Sun, Jul 12

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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
Aug 3
EYW1:01 pmKey West
6h 39m
1 stop
IAD7:40 pmWashington, D.C. Dulles Intl
Aug 14
IAD7:57 amWashington, D.C. Dulles Intl
4h 58m
1 stop
EYW12:55 pmKey West
$493
American Airlines
Jul 21
EYW11:28 amKey West
8h 06m
2 stops
IAD7:34 pmWashington, D.C. Dulles Intl
Jul 28
IAD9:20 amWashington, D.C. Dulles Intl
9h 46m
2 stops
EYW7:06 pmKey West
$507
American Airlines
Jul 14
EYW1:47 pmKey West
8h 18m
2 stops
IAD10:05 pmWashington, D.C. Dulles Intl
Jul 19
IAD1:08 pmWashington, D.C. Dulles Intl
5h 40m
1 stop
EYW6:48 pmKey West
$529

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

Our best Delta deals on Key West to Washington, D.C. Dulles Intl Airport flight tickets
Delta
Oct 8
EYW11:45 amKey West
6h 41m
1 stop
IAD6:26 pmWashington, D.C. Dulles Intl
Oct 11
IAD6:00 amWashington, D.C. Dulles Intl
4h 58m
1 stop
EYW10:58 amKey West
$309
Delta
Jul 14
EYW6:18 pmKey West
6h 23m
1 stop
IAD12:41 amWashington, D.C. Dulles Intl
Jul 19
IAD10:21 amWashington, D.C. Dulles Intl
7h 02m
1 stop
EYW5:23 pmKey West
$334
Delta
Jul 10
EYW6:18 pmKey West
6h 23m
1 stop
IAD12:41 amWashington, D.C. Dulles Intl
Jul 14
IAD6:00 amWashington, D.C. Dulles Intl
5h 00m
1 stop
EYW11:00 amKey West
$359

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 June 27, 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

Fri 8/21

1:11 pm-11:43 am

1 stop22h 32m

Washington, D.C. Dulles Intl

Mon 8/24

6:09 pm-12:34 pm

2 stops18h 25m

$265

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Fri 8/21

10:59 am-11:43 am

1 stop24h 44m

Washington, D.C. Dulles Intl

Mon 8/24

12:28 pm-12:34 pm

1 stop24h 06m

$286

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Fri 7/10

12:07 pm-12:26 pm

1 stop24h 19m

Washington, D.C. Dulles Intl

Tue 7/14

5:40 pm-11:06 am

2 stops17h 26m

$305

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Thu 9/24

10:59 am-7:09 pm

1 stop8h 10m

Washington, D.C. Dulles Intl

Sun 9/27

9:21 am-12:19 pm

1 stop26h 58m

$306
Quickest round-trip

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Thu 10/8

11:45 am-6:26 pm

1 stop6h 41m

Washington, D.C. Dulles Intl

Sun 10/11

6:00 am-10:58 am

1 stop4h 58m

$309

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Thu 9/24

10:59 am-7:09 pm

1 stop8h 10m

Washington, D.C. Dulles Intl

Sun 9/27

9:16 pm-11:19 am

2 stops14h 03m

$318

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Fri 7/24

12:07 pm-6:33 pm

1 stop6h 26m

Washington, D.C. Dulles Intl

Sun 7/26

8:33 pm-11:27 am

2 stops14h 54m

$329

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Tue 7/14

6:18 pm-12:41 am

1 stop6h 23m

Washington, D.C. Dulles Intl

Sun 7/19

10:21 am-5:23 pm

1 stop7h 02m

$334

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Tue 7/21

1:14 pm-11:43 am

1 stop22h 29m

Washington, D.C. Dulles Intl

Tue 7/28

5:40 pm-10:05 am

2 stops40h 25m

$342

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Thu 7/9

11:04 am-7:38 pm

2 stops8h 34m

Washington, D.C. Dulles Intl

Sun 7/12

1:32 pm-11:27 am

1 stop21h 55m

$351

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 at noon is the least expensive time of day to depart. momondo users have found prices as low as $409 when looking at flights departing at noon. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $441 on average. Flights to Washington, D.C. Dulles Intl Airport from Key West in the afternoon 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 Airport flights?

There are 4 cabin classes available to choose from on Key West to Washington, D.C. Dulles Intl Airport 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 34% 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

6h 03m

Direct flights

None
The fastest flight from Key West to Washington, D.C. Dulles Intl Airport takes 6h 03m
There are no direct flights from Key West to Washington, D.C. Dulles Intl Airport. There are no popular flight routes from Key West to Washington, D.C. Dulles Intl Airport.
Search flight deals

Frequently asked questions about flying from Key West to Washington, D.C. Dulles Intl Airport

  • 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. 6h 03m 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 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?

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
Arlington
Gettysburg
Winchester
Waldorf
Laurel
Woodbridge
Fredericksburg
Gaithersburg
Colonial Beach
Linthicum Heights
Rockville
Silver Spring
Towson
Manassas
Sterling
Tysons
Springfield
Fairfax

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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