HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Dulles Intl

$114+ Cheap flights from Key West (EYW) to Dulles Intl (IAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/19. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — IAD
Aug 18 — Aug 251
Tue 8/18
Tue 8/25
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Key West to Dulles Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Key West to Dulles Intl

Cheapest flights from Key West to Dulles Intl
Explore the most affordable flight options available from Key West to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 19, 2026.

This Kiwi.com deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/712:07 pm
EYW
-
IAD
1 stop6h 26m
Multiple Airlines
Sun 8/1612:50 pm
IAD
-
EYW
2 stops29h 47m
Multiple Airlines
Deal found 7/15$280
This Kiwi.com deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/203:27 pm
EYW
-
IAD
1 stop21h 20m
Multiple Airlines
Sun 7/2612:50 pm
IAD
-
EYW
2 stops29h 38m
Multiple Airlines
Deal found 7/13$297
This Kiwi.com deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/41:14 pm
EYW
-
IAD
1 stop22h 29m
Multiple Airlines
Tue 8/186:09 pm
IAD
-
EYW
2 stops16h 57m
Multiple Airlines
Deal found 7/17$303
This Delta deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/61:59 pm
EYW
-
IAD
1 stop6h 56m
Delta
Sun 8/96:00 am
IAD
-
EYW
1 stop4h 50m
Delta
Deal found 7/14$309
This Kiwi.com deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/612:05 pm
EYW
-
IAD
1 stop22h 20m
Multiple Airlines
Tue 8/118:33 pm
IAD
-
EYW
2 stops38h 54m
Multiple Airlines
Deal found 7/18$313
This Delta deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/82:00 pm
EYW
-
IAD
1 stop4h 43m
Delta
Sun 10/116:00 am
IAD
-
EYW
1 stop4h 48m
Delta
Deal found 7/15$323
This United Airlines deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/302:26 pm
EYW
-
IAD
1 stop6h 34m
United Airlines
Wed 8/56:33 am
IAD
-
EYW
1 stop6h 57m
United Airlines
Deal found 7/15$334
This Kiwi.com deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/3012:05 pm
EYW
-
IAD
2 stops23h 15m
Multiple Airlines
Wed 8/511:11 am
IAD
-
EYW
1 stop24h 14m
Multiple Airlines
Deal found 7/15$341
This Delta deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/47:40 am
EYW
-
IAD
1 stop6h 25m
Delta
Tue 8/186:00 am
IAD
-
EYW
1 stop4h 50m
Delta
Deal found 7/16$349
This Kiwi.com deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/101:11 pm
EYW
-
IAD
2 stops9h 41m
Multiple Airlines
Wed 8/1212:28 pm
IAD
-
EYW
1 stop21h 56m
Multiple Airlines
Deal found 7/17$362

Find flight deals from Key West to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Key West (EYW) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$280
(Kiwi.com)

One-way from

$114
(Kiwi.com)

Popular in

September

Cheapest in

February

Average price

$453
Provider with most accurate pricing for Key West-Washington, D.C. Dulles Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Key West-Washington, D.C. Dulles Intl flights.
Search Deals
From Key West to Washington, D.C. Dulles Intl
Search Deals
One-way flight from Key West to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 28% potential increase in price ($177 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Key West to Dulles Intl 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, Cheapflights users made 2,558,603 searches. Data last updated July 19, 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 8/7

12:07 pm-6:33 pm

1 stop6h 26m

Washington, D.C. Dulles Intl

Sun 8/16

12:50 pm-6:37 pm

2 stops29h 47m

$280

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Tue 8/4

1:14 pm-11:43 am

1 stop22h 29m

Washington, D.C. Dulles Intl

Tue 8/18

6:09 pm-11:06 am

2 stops16h 57m

$303

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Thu 8/13

6:15 pm-12:34 am

1 stop6h 19m

Washington, D.C. Dulles Intl

Sun 8/16

6:00 am-10:50 am

1 stop4h 50m

$309
Quickest round-trip

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Sat 9/5

11:48 am-4:42 pm

1 stop4h 54m

Washington, D.C. Dulles Intl

Sun 9/6

6:00 am-10:50 am

1 stop4h 50m

$309

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Thu 8/6

1:59 pm-8:55 pm

1 stop6h 56m

Washington, D.C. Dulles Intl

Sun 8/9

6:00 am-10:50 am

1 stop4h 50m

$309

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Thu 9/24

7:40 am-2:12 pm

1 stop6h 32m

Washington, D.C. Dulles Intl

Tue 9/29

6:00 am-10:47 am

1 stop4h 47m

$309

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Thu 8/6

11:48 am-6:28 pm

1 stop6h 40m

Washington, D.C. Dulles Intl

Tue 8/11

8:28 am-1:00 pm

1 stop4h 32m

$349

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Fri 8/7

6:15 pm-12:34 am

1 stop6h 19m

Washington, D.C. Dulles Intl

Sun 8/16

6:00 am-10:50 am

1 stop4h 50m

$349

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Thu 7/30

11:56 am-4:46 pm

1 stop4h 50m

Washington, D.C. Dulles Intl

Wed 8/5

3:03 pm-7:57 pm

1 stop4h 54m

$375
Cheapest one-way

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Wed 8/19

11:46 am-11:43 am

1 stop23h 57m

$137

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/17

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

Compare providers for flights from Key West to Dulles Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Key West to Dulles Intl in July.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Key West-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Key West-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Key West-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Key West-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Key West-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Key West to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Key West with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from Key West to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Key West to Washington, D.C. Dulles Intl?

    Most people fly from Key West (EYW) if they book a flight from Key West to Washington, D.C. Dulles Intl. On average, Key West has 0 outbound flights to Washington, D.C. Dulles Intl per day from 0 airlines. Key West is conveniently located just 2.6 mi from Key West’s city center.

  • How long is the flight from Key West to Washington, D.C. Dulles Intl Airport?

    For as low as $309, Delta can have you in Washington, D.C. Dulles Intl Airport from Key West in 6h 19m. Airlines will cover a distance of 1025 mi.

  • Can I find deals for flights from Key West to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Key West to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Key West to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Key West to Dulles Intl.

  • Can I find deals for business class flights from Key West to Dulles Intl?

    Yes. Cheapflights offers flight deals from Key West to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Arlington
Tysons
Owings Mills
Springfield
Lanham
Reston
Herndon
Rockville
Chantilly
Hyattsville
Manassas
Fredericksburg
Falls Church
Hanover
Laurel
Sterling
Clinton
Hunt Valley
Cordova

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Key West to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
Orlando to Reagan-National flights
Orlando to Baltimore flights
Fort Lauderdale to Baltimore flights
Orlando to Dulles Intl flights
Tampa to Baltimore flights
Tampa to Dulles Intl flights
Miami to Reagan-National flights
Miami to Dulles Intl flights
Fort Lauderdale to Dulles Intl flights
Tampa to Reagan-National flights
Miami to Baltimore flights
Fort Lauderdale to Reagan-National flights
Jacksonville to Baltimore flights
Jacksonville to Dulles Intl flights
West Palm Beach to Reagan-National flights
Jacksonville to Reagan-National flights
West Palm Beach to Dulles Intl flights
Fort Myers to Reagan-National flights
Fort Myers to Dulles Intl flights
Fort Myers to Baltimore flights
West Palm Beach to Baltimore flights
Pensacola to Dulles Intl flights
Pensacola to Baltimore flights
Sarasota to Reagan-National flights
Pensacola to Reagan-National flights
Panama City to Reagan-National flights
Panama City to Dulles Intl flights
Sarasota to Baltimore flights
Tallahassee to Dulles Intl flights
Sarasota to Dulles Intl flights
Panama City to Baltimore flights
Valparaiso to Baltimore flights
Tallahassee to Reagan-National flights
Daytona Beach to Dulles Intl flights
Daytona Beach to Reagan-National flights
Valparaiso to Reagan-National flights
Valparaiso to Dulles Intl flights
Tallahassee to Baltimore flights
Gainesville to Dulles Intl flights
Melbourne to Baltimore flights
Gainesville to Reagan-National flights
Daytona Beach to Baltimore flights
Gainesville to Baltimore flights
Key West to Reagan-National flights
Melbourne to Dulles Intl flights
Melbourne to Reagan-National flights
Valdosta to Dulles Intl flights
Key West to Baltimore flights
Valdosta to Baltimore flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.