HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Dulles Intl

$107+ 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 2/19. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — IAD
Mar 4 — Mar 111
Wed 3/4
Wed 3/11
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 February 2, 2026.

This United Airlines deal was found by Cheapflights users on 1/30. 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 2/266:35 pm
EYW
-
IAD
Nonstop2h 50m
United Airlines
Sun 3/112:50 pm
IAD
-
EYW
Nonstop3h 17m
United Airlines
Deal found 1/30$229
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 4/712:25 pm
EYW
-
IAD
2 stops12h 11m
Multiple Airlines
Sun 4/122:01 pm
IAD
-
EYW
1 stop20h 10m
Multiple Airlines
Deal found 2/1$248
This United Airlines deal was found by Cheapflights users on 1/31. 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.
Fri 2/206:40 pm
EYW
-
IAD
Nonstop2h 40m
United Airlines
Mon 3/236:00 am
IAD
-
EYW
1 stop7h 23m
United Airlines
Deal found 1/31$264
This Delta deal was found by Cheapflights users on 1/31. 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.
Fri 5/16:19 pm
EYW
-
IAD
1 stop6h 23m
Delta
Sun 5/36:00 am
IAD
-
EYW
1 stop5h 25m
Delta
Deal found 1/31$274
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 4/171:06 pm
EYW
-
IAD
1 stop18h 21m
Multiple Airlines
Wed 4/296:20 am
IAD
-
EYW
2 stops28h 57m
Multiple Airlines
Deal found 2/1$283
This United Airlines deal was found by Cheapflights users on 1/31. 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.
Mon 3/26:40 pm
EYW
-
IAD
Nonstop2h 40m
United Airlines
Mon 3/91:15 pm
IAD
-
EYW
Nonstop3h 21m
United Airlines
Deal found 1/31$304
This United Airlines deal was found by Cheapflights users on 2/1. 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.
Fri 2/136:40 pm
EYW
-
IAD
Nonstop2h 40m
United Airlines
Mon 2/1612:50 pm
IAD
-
EYW
Nonstop3h 17m
United Airlines
Deal found 2/1$329
This Delta deal was found by Cheapflights users on 1/30. 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.
Wed 3/47:10 am
EYW
-
IAD
1 stop7h 35m
Delta
Sun 3/812:47 pm
IAD
-
EYW
1 stop6h 54m
Delta
Deal found 1/30$341

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 February 2, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$229
(United Airlines)

One-way from

$107
(Kiwi.com)

Popular in

January

Cheapest in

September

Average price

$266

Good one-way deal

$176 or less
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. 36% potential increase in price ($261 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 33% potential price decrease ($114 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a one-way flight from Key West to Washington, D.C. Dulles Intl.
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 February 2, 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

Key West

Fly to

Dulles Intl

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

Fri 2/20

6:40 pm-9:20 pm

Nonstop2h 40m

Washington, D.C. Dulles Intl

Mon 3/23

6:00 am-1:23 pm

1 stop7h 23m

$264

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Fri 4/17

1:06 pm-7:27 am

1 stop18h 21m

Washington, D.C. Dulles Intl

Wed 4/29

6:20 am-11:17 am

2 stops28h 57m

$283

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

3:00 pm-7:40 pm

1 stop4h 40m

$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

Fri 2/13

6:40 pm-9:20 pm

Nonstop2h 40m

Washington, D.C. Dulles Intl

Mon 2/16

12:50 pm-4:07 pm

Nonstop3h 17m

$329

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Thu 2/19

11:01 am-7:12 pm

1 stop8h 11m

$107

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Tue 3/24

1:01 pm-12:21 am

2 stops35h 20m

$132

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Sun 4/5

4:22 pm-12:36 am

3 stops56h 14m

$179

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Sun 2/8

9:46 am-12:36 pm

1 stop26h 50m

$182

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/1

Showing 1-10 of 13 results
1
2
  • 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.

Cheapflights Insights

Everything you need to know about your flight from Key West to Washington, D.C. Dulles Intl Airport

What is the cheapest time of day to fly from EYW to IAD?

Find hourly flight availability from Key West to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 2, 2026.

When flying from Key West to Washington, D.C. Dulles Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated February 2, 2026.
Read reviews from past customers who have flown Delta from Key West to Washington, D.C. Dulles Intl Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,129 reviews

Boarding

8.1

Overall

7.9

Food

7.2

Crew

8.5

Comfort

7.9

Entertainment

7.8

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.
Delta
7.9
Good
8,129 reviews
Delta
7.9
Good
8,129 reviews

Boarding

8.1

Overall

7.9

Food

7.2

Crew

8.5

Comfort

7.9

Entertainment

7.8

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.

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 1 outbound flight to Washington, D.C. Dulles Intl per day from 1 airline. 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 $229, United Airlines can have you in Washington, D.C. Dulles Intl Airport from Key West in 2h 50m. Airlines will cover a distance of 1025 mi. Most flights are nonstop.

  • What is the cheapest airline to fly from Key West to Washington, D.C. Dulles Intl Airport round-trip?

    According to our current data, Delta ($223), offers the cheapest pricing from Key West to Washington, D.C. Dulles Intl Airport. Delta is priced at 50% lower than the current average price of a flight leaving 3 months from now.

  • What are the most reliable airlines from Key West to Washington, D.C. Dulles Intl Airport?

    The top 3 most reliable airlines when flying from Key West to Washington, D.C. Dulles Intl Airport are Mesa Airlines (89%), United Airlines (77%) and Republic Airways (70%).

  • What are the cheapest flights from Key West to Washington, D.C. Dulles Intl Airport?

    Looking at all options, your cheapest flight can be booked for $129. While the most popular route (Key West - Washington, D.C. Dulles Intl) can be booked for $229 on average, our data indicates $282 when flying from Key West to Washington, D.C. Dulles Intl Airport.

  • 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
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Silver Spring
Herndon
Fredericksburg
Hanover
Linthicum Heights
Rockville
Laurel
Towson
Manassas
Largo
Bowie
McLean
Clinton
Upper Marlboro

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 Dulles Intl flights
Orlando to Reagan-National flights
Orlando to Baltimore flights
Fort Lauderdale to Baltimore flights
Miami to Dulles Intl flights
Tampa to Dulles Intl flights
Fort Lauderdale to Dulles Intl flights
Tampa to Reagan-National flights
Miami to Baltimore flights
Miami to Reagan-National flights
Tampa to Baltimore flights
Fort Lauderdale to Reagan-National flights
Jacksonville to Baltimore flights
Sarasota to Baltimore flights
West Palm Beach to Reagan-National flights
Fort Myers to Baltimore flights
Jacksonville to Dulles Intl flights
West Palm Beach to Baltimore flights
Fort Myers to Dulles Intl flights
Jacksonville to Reagan-National flights
Fort Myers to Reagan-National flights
Pensacola to Dulles Intl flights
Sarasota to Reagan-National flights
Pensacola to Reagan-National flights
West Palm Beach to Dulles Intl flights
Pensacola to Baltimore flights
Tallahassee to Reagan-National flights
Tallahassee to Dulles Intl flights
Daytona Beach to Baltimore flights
Tallahassee to Baltimore flights
Daytona Beach to Reagan-National flights
Daytona Beach to Dulles Intl flights
Panama City to Reagan-National flights
Panama City to Dulles Intl flights
Sarasota to Dulles Intl flights
Valparaiso to Reagan-National flights
Valparaiso to Dulles Intl flights
Gainesville to Reagan-National flights
Key West to Baltimore flights
Melbourne to Dulles Intl flights
Gainesville to Dulles Intl flights
Valparaiso to Baltimore flights
Key West to Reagan-National flights
Panama City to Baltimore flights
Melbourne to Baltimore flights
Gainesville to Baltimore flights
Melbourne to Reagan-National flights
Valdosta to Dulles Intl flights
Valdosta to Baltimore flights

Top airline flying from Key West to Dulles Intl

Discover the top airline that operate flights from Key West to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$223Average$268FlexibilityNo cancel feeOn-timeN/A

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.
Site
Cookie settings©2026 Cheapflights