HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Dulles Intl

$109+ 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 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — IAD
ago. 19 — ago. 261
mar. 8/19
mar. 8/26
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

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 agosto 14, 2025.

Round-trip from

$249
(Delta)

One-way from

$109
(Kiwi.com)

Popular in

March

Cheapest in

September

Average price

$416
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. 24% potential increase in price ($135 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($29 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
Search Deals

Find 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 agosto 14, 2025.

This Delta deal was found by Cheapflights users on 8/14. 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.
mar. 9/237:00 amEYW - IAD
1 stop4h 40mDelta
dom. 9/286:00 amIAD - EYW
1 stop4h 55mDelta
Deal found 8/14$249
This Delta deal was found by Cheapflights users on 8/14. 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.
vie. 9/266:10 pmEYW - IAD
1 stop6h 03mDelta
mar. 9/307:20 amIAD - EYW
1 stop5h 42mDelta
Deal found 8/14$274
This Kiwi.com deal was found by Cheapflights users on 8/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/2812:29 pmEYW - IAD
1 stop21h 30mMultiple Airlines
vie. 10/39:09 pmIAD - EYW
1 stop11h 53mMultiple Airlines
Deal found 8/14$324
This American Airlines deal was found by Cheapflights users on 8/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/1811:25 amEYW - IAD
2 stops8h 17mAmerican Airlines
mar. 9/2311:18 amIAD - EYW
1 stop6h 28mAmerican Airlines
Deal found 8/14$364
This Delta deal was found by Cheapflights users on 8/14. 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.
mar. 9/236:10 pmEYW - IAD
1 stop5h 07mDelta
vie. 10/310:07 amIAD - EYW
1 stop7h 05mDelta
Deal found 8/14$384
This Delta deal was found by Cheapflights users on 8/14. 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.
sáb. 9/277:00 amEYW - IAD
1 stop16h 17mDelta
dom. 9/286:00 amIAD - EYW
1 stop4h 55mDelta
Deal found 8/14$386
This United Airlines deal was found by Cheapflights users on 8/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/273:11 pmEYW - IAD
1 stop7h 47mUnited Airlines
dom. 9/286:15 amIAD - EYW
1 stop8h 14mUnited Airlines
Deal found 8/14$397
This United Airlines deal was found by Cheapflights users on 8/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/113:50 pmEYW - IAD
1 stop6h 49mUnited Airlines
lun. 9/155:30 pmIAD - EYW
2 stops20h 31mUnited Airlines
Deal found 8/13$417
This Delta deal was found by Cheapflights users on 8/14. 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.
sáb. 9/276:10 pmEYW - IAD
1 stop5h 07mDelta
mié. 10/112:35 pmIAD - EYW
1 stop7h 32mDelta
Deal found 8/14$439
This Delta deal was found by Cheapflights users on 8/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 8/146:22 pmEYW - IAD
1 stop5h 59mDelta
jue. 8/216:00 amIAD - EYW
1 stop4h 56mDelta
Deal found 8/13$464

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 agosto 14, 2025.
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

mié. 9/24

2:00 pm-6:39 pm

1 stop4h 39m

Washington, D.C. Dulles Intl

lun. 9/29

3:31 pm-8:07 pm

1 stop4h 36m

$249

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

mar. 9/23

7:00 am-11:40 am

1 stop4h 40m

Washington, D.C. Dulles Intl

dom. 9/28

6:00 am-10:55 am

1 stop4h 55m

$249

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

jue. 9/25

6:10 pm-12:13 am

1 stop6h 03m

Washington, D.C. Dulles Intl

mié. 10/1

3:31 pm-8:07 pm

1 stop4h 36m

$249

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

jue. 9/18

6:10 pm-12:13 am

1 stop6h 03m

Washington, D.C. Dulles Intl

mar. 9/23

10:07 am-5:15 pm

1 stop7h 08m

$249

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

jue. 9/25

11:50 am-4:27 pm

1 stop4h 37m

Washington, D.C. Dulles Intl

mar. 9/30

12:35 pm-8:07 pm

1 stop7h 32m

$249

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

mar. 9/23

6:10 pm-11:17 pm

1 stop5h 07m

Washington, D.C. Dulles Intl

mié. 10/1

3:31 pm-8:07 pm

1 stop4h 36m

$249

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

jue. 9/18

2:00 pm-9:39 pm

1 stop7h 39m

Washington, D.C. Dulles Intl

lun. 9/22

6:00 am-1:02 pm

1 stop7h 02m

$249

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

mar. 9/23

7:00 am-11:40 am

1 stop4h 40m

Washington, D.C. Dulles Intl

lun. 9/29

3:31 pm-8:07 pm

1 stop4h 36m

$249

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

jue. 9/25

7:00 am-2:33 pm

1 stop7h 33m

Washington, D.C. Dulles Intl

lun. 9/29

3:31 pm-8:07 pm

1 stop4h 36m

$249

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

mar. 9/23

7:00 am-11:40 am

1 stop4h 40m

Washington, D.C. Dulles Intl

mar. 9/30

12:35 pm-5:12 pm

1 stop4h 37m

$249

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Showing 1-10 of 20 results
1
2

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.

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 agosto 14, 2025.
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
8.0
Very good
7,980 reviews

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Boarding

8.2

Food

7.3

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
8.0
Very good
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Boarding

8.2

Food

7.3

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 0 outbound flights 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.

  • 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.

  • 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.

  • What is the cheapest month to book a flight from Key West to Washington, D.C. Dulles Intl Airport?

    Currently, July is the cheapest month in which you can book a flight from Key West to Washington, D.C. Dulles Intl Airport (average of $302). Flying from Key West to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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
Woodbridge
Arlington
Alexandria
Tysons
Silver Spring
Springfield
Fredericksburg
Gaithersburg
Towson
Linthicum Heights
Fairfax
Manassas
Falls Church
Laurel
Rockville
Oxon Hill
National Harbor
Dundalk
Waldorf
Bowie

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.
Tampa to Dulles Intl flights
Fort Lauderdale to Baltimore flights
Orlando to Reagan-National flights
Orlando to Dulles Intl flights
Orlando to Baltimore flights
Miami to Reagan-National flights
Miami to Dulles Intl flights
Tampa to Baltimore flights
Fort Lauderdale to Dulles Intl flights
Miami to Baltimore flights
Fort Lauderdale to Reagan-National flights
West Palm Beach to Reagan-National flights
Tampa to Reagan-National flights
Fort Myers to Baltimore flights
Fort Myers to Dulles Intl flights
West Palm Beach to Dulles Intl flights
Jacksonville to Dulles Intl flights
Jacksonville to Reagan-National flights
West Palm Beach to Baltimore flights
Jacksonville to Baltimore flights
Fort Myers to Reagan-National flights
Sarasota to Reagan-National flights
Sarasota to Dulles Intl flights
Sarasota to Baltimore flights
Pensacola to Reagan-National flights
Pensacola to Dulles Intl flights
Pensacola to Baltimore flights
Panama City to Reagan-National flights
Tallahassee to Dulles Intl flights
Tallahassee to Reagan-National flights
Panama City to Dulles Intl flights
Valparaiso to Dulles Intl flights
Panama City to Baltimore flights
Valparaiso to Baltimore flights
Tallahassee to Baltimore flights
Daytona Beach to Dulles Intl flights
Daytona Beach to Reagan-National flights
Melbourne to Dulles Intl flights
Gainesville to Dulles Intl flights
Daytona Beach to Baltimore flights
Gainesville to Reagan-National flights
Gainesville to Baltimore flights
Key West to Reagan-National flights
Valparaiso to Reagan-National flights
Melbourne to Reagan-National flights
Melbourne to Baltimore flights
Key West to Baltimore flights
Valdosta to Baltimore flights
Valdosta to Dulles Intl 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 agosto 14, 2025.
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.