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Cheap flights from Key West to Washington, D.C. from $107

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 8/31. 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
5:09 pm - 1:03 pmEYW  Key West-IAD Washington, D.C. Dulles Intl
19h 54m1 stop Tampa St. Petersburg
Multiple Airlines Logo
9:04 pm - 9:24 amIAD  Washington, D.C. Dulles Intl-EYW Key West
36h 20m2 stops Atlanta Hartsfield-Jackson Tampa
$249Multiple Airlines
Thu, Sep 10 - Mon, Sep 14
Delta Logo
6:10 pm - 12:42 amEYW  Key West-IAD Washington, D.C. Dulles Intl
6h 32m1 stop Atlanta Hartsfield-Jackson
Delta Logo
6:00 am - 10:47 amIAD  Washington, D.C. Dulles Intl-EYW Key West
4h 47m1 stop Atlanta Hartsfield-Jackson
$333Delta
Thu, Oct 8 - Sun, Oct 11
Delta Logo
7:40 am - 2:11 pmEYW  Key West-IAD Washington, D.C. Dulles Intl
6h 31m1 stop Atlanta Hartsfield-Jackson
Delta Logo
8:08 am - 12:53 pmIAD  Washington, D.C. Dulles Intl-EYW Key West
4h 45m1 stop Atlanta Hartsfield-Jackson
$359Delta
Fri, Sep 11 - Mon, Sep 14
Delta Logo
6:10 pm - 12:42 amEYW  Key West-IAD Washington, D.C. Dulles Intl
6h 32m1 stop Atlanta Hartsfield-Jackson
Delta Logo
6:00 am - 10:47 amIAD  Washington, D.C. Dulles Intl-EYW Key West
4h 47m1 stop Atlanta Hartsfield-Jackson
$411Delta
Thu, Oct 8 - Sun, Oct 11
Delta Logo
6:10 pm - 12:42 amEYW  Key West-IAD Washington, D.C. Dulles Intl
6h 32m1 stop Atlanta Hartsfield-Jackson
Delta Logo
6:00 am - 10:47 amIAD  Washington, D.C. Dulles Intl-EYW Key West
4h 47m1 stop Atlanta Hartsfield-Jackson
$422Delta
Thu, Oct 8 - Sun, Oct 11
Delta Logo
6:10 pm - 12:42 amEYW  Key West-IAD Washington, D.C. Dulles Intl
6h 32m1 stop Atlanta Hartsfield-Jackson
Delta Logo
6:00 am - 10:47 amIAD  Washington, D.C. Dulles Intl-EYW Key West
4h 47m1 stop Atlanta Hartsfield-Jackson
$437Delta
Thu, Oct 8 - Sun, Oct 11
American Airlines Logo
2:15 pm - 6:59 pmEYW  Key West-IAD Washington, D.C. Dulles Intl
4h 44m1 stop Charlotte Douglas
American Airlines Logo
10:25 am - 2:49 pmIAD  Washington, D.C. Dulles Intl-EYW Key West
4h 24m1 stop Charlotte Douglas
$503American Airlines
Fri, Sep 25 - Mon, Sep 28
American Airlines Logo
6:27 pm - 10:51 pmEYW  Key West-IAD Washington, D.C. Dulles Intl
4h 24m1 stop Charlotte Douglas
American Airlines Logo
10:25 am - 7:17 pmIAD  Washington, D.C. Dulles Intl-EYW Key West
8h 52m2 stops Charlotte Douglas Miami
$510American Airlines
Thu, Sep 24 - Tue, Sep 29
American Airlines Logo
6:27 pm - 10:51 pmEYW  Key West-IAD Washington, D.C. Dulles Intl
4h 24m1 stop Charlotte Douglas
American Airlines Logo
6:14 am - 1:17 pmIAD  Washington, D.C. Dulles Intl-EYW Key West
7h 03m2 stops Charlotte Douglas Miami
$513American Airlines
Fri, Sep 11 - Mon, Sep 14
American Airlines Logo
4:50 pm - 10:55 pmEYW  Key West-IAD Washington, D.C. Dulles Intl
6h 05m1 stop Charlotte Douglas
American Airlines Logo
6:10 am - 12:55 pmIAD  Washington, D.C. Dulles Intl-EYW Key West
6h 45m1 stop Charlotte Douglas
$532American Airlines
Thu, Sep 3 - Mon, Sep 7

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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
Sep 25
EYW2:15 pmKey West
4h 44m
1 stop
IAD6:59 pmWashington, D.C. Dulles Intl
Sep 28
IAD10:25 amWashington, D.C. Dulles Intl
4h 24m
1 stop
EYW2:49 pmKey West
$503
American Airlines
Sep 24
EYW6:27 pmKey West
4h 24m
1 stop
IAD10:51 pmWashington, D.C. Dulles Intl
Sep 29
IAD10:25 amWashington, D.C. Dulles Intl
8h 52m
2 stops
EYW7:17 pmKey West
$510
American Airlines
Sep 11
EYW6:27 pmKey West
4h 24m
1 stop
IAD10:51 pmWashington, D.C. Dulles Intl
Sep 14
IAD6:14 amWashington, D.C. Dulles Intl
7h 03m
2 stops
EYW1:17 pmKey West
$513

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
EYW6:10 pmKey West
6h 32m
1 stop
IAD12:42 amWashington, D.C. Dulles Intl
Oct 11
IAD6:00 amWashington, D.C. Dulles Intl
4h 47m
1 stop
EYW10:47 amKey West
$333
Delta
Sep 11
EYW7:40 amKey West
6h 31m
1 stop
IAD2:11 pmWashington, D.C. Dulles Intl
Sep 14
IAD8:08 amWashington, D.C. Dulles Intl
4h 45m
1 stop
EYW12:53 pmKey West
$359
Delta
Oct 8
EYW6:10 pmKey West
6h 32m
1 stop
IAD12:42 amWashington, D.C. Dulles Intl
Oct 11
IAD6:00 amWashington, D.C. Dulles Intl
4h 47m
1 stop
EYW10:47 amKey West
$411

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 August 8, 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 Key West - IAD Washington, D.C. Dulles Intl

EYWIAD

Key West

Thu 9/10

5:09 pm-1:03 pm

1 stop19h 54m

Washington, D.C. Dulles Intl

Mon 9/14

9:04 pm-9:24 am

2 stops36h 20m

$249

Key WestWashington, D.C.

EYW Key West - IAD Washington, D.C. Dulles Intl

EYWIAD

Key West

Thu 10/8

6:10 pm-12:42 am

1 stop6h 32m

Washington, D.C. Dulles Intl

Sun 10/11

6:00 am-10:47 am

1 stop4h 47m

$333

Key WestWashington, D.C.

EYW Key West - IAD Washington, D.C. Dulles Intl

EYWIAD

Key West

Fri 9/11

7:40 am-2:11 pm

1 stop6h 31m

Washington, D.C. Dulles Intl

Mon 9/14

8:08 am-12:53 pm

1 stop4h 45m

$359

Key WestWashington, D.C.

EYW Key West - IAD Washington, D.C. Dulles Intl

EYWIAD

Key West

Thu 10/8

6:10 pm-12:42 am

1 stop6h 32m

Washington, D.C. Dulles Intl

Sun 10/11

6:00 am-10:47 am

1 stop4h 47m

$411

Key WestWashington, D.C.

EYW Key West - IAD Washington, D.C. Dulles Intl

EYWIAD

Key West

Thu 10/8

6:10 pm-12:42 am

1 stop6h 32m

Washington, D.C. Dulles Intl

Sun 10/11

6:00 am-10:47 am

1 stop4h 47m

$422

Key WestWashington, D.C.

EYW Key West - IAD Washington, D.C. Dulles Intl

EYWIAD

Key West

Thu 10/8

6:10 pm-12:42 am

1 stop6h 32m

Washington, D.C. Dulles Intl

Sun 10/11

6:00 am-10:47 am

1 stop4h 47m

$437
Quickest round-trip

Key WestWashington, D.C.

EYW Key West - IAD Washington, D.C. Dulles Intl

EYWIAD

Key West

Fri 9/25

2:15 pm-6:59 pm

1 stop4h 44m

Washington, D.C. Dulles Intl

Mon 9/28

10:25 am-2:49 pm

1 stop4h 24m

$503

Key WestWashington, D.C.

EYW Key West - IAD Washington, D.C. Dulles Intl

EYWIAD

Key West

Thu 9/24

6:27 pm-10:51 pm

1 stop4h 24m

Washington, D.C. Dulles Intl

Tue 9/29

10:25 am-7:17 pm

2 stops8h 52m

$510

Key WestWashington, D.C.

EYW Key West - IAD Washington, D.C. Dulles Intl

EYWIAD

Key West

Fri 9/11

6:27 pm-10:51 pm

1 stop4h 24m

Washington, D.C. Dulles Intl

Mon 9/14

6:14 am-1:17 pm

2 stops7h 03m

$513

Key WestWashington, D.C.

EYW Key West - IAD Washington, D.C. Dulles Intl

EYWIAD

Key West

Thu 9/3

4:50 pm-10:55 pm

1 stop6h 05m

Washington, D.C. Dulles Intl

Mon 9/7

6:10 am-12:55 pm

1 stop6h 45m

$532

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 month to fly to Washington, D.C. Dulles Intl Airport?

In general, November is the cheapest month to fly from Key West to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of November, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $0.

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 is only 1 cabin class 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 6% 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 32m

Direct flights

Sat and Sun
The fastest flight from Key West to Washington, D.C. Dulles Intl Airport takes 6h 32m
Direct flights go from Key West to Washington, D.C. Dulles Intl Airport on Saturday and Sunday. There are no airlines offering direct flights.
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 32m 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
Linthicum Heights
Rockville
Silver Spring
Towson
Sterling
Colonial Beach
Springfield
Fairfax
Tysons
Edgewood

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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