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Key West

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

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 6/9. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — EYW
Jun 18 — Jun 251
Thu 6/18
Thu 6/25
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Key West are usually found in January or August, booked 48 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap flight deals from Dulles Intl to Key West

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

This American Airlines deal was found by Cheapflights users on 5/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:33 am
IAD
-
EYW
1 stop5h 38m
American Airlines
Wed 9/91:59 pm
EYW
-
IAD
2 stops9h 52m
American Airlines
Deal found 5/18$314
This Kiwi.com deal was found by Cheapflights users on 5/17. 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.
Fri 6/123:06 pm
IAD
-
EYW
2 stops22h 52m
Multiple Airlines
Fri 6/191:11 pm
EYW
-
IAD
1 stop28h 04m
Multiple Airlines
Deal found 5/17$315
This Kiwi.com deal was found by Cheapflights users on 5/17. 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.
Thu 6/111:38 pm
IAD
-
EYW
1 stop24h 57m
Multiple Airlines
Sun 6/149:16 pm
EYW
-
IAD
1 stop15h 37m
Multiple Airlines
Deal found 5/17$316
This Kiwi.com deal was found by Cheapflights users on 5/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/2411:17 am
IAD
-
EYW
2 stops23h 07m
Multiple Airlines
Tue 6/301:14 pm
EYW
-
IAD
1 stop22h 33m
Multiple Airlines
Deal found 5/16$317
This American Airlines deal was found by Cheapflights users on 5/19. 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.
Sat 8/156:33 am
IAD
-
EYW
2 stops6h 32m
American Airlines
Tue 8/181:40 pm
EYW
-
IAD
2 stops9h 15m
American Airlines
Deal found 5/19$319
This Kiwi.com deal was found by Cheapflights users on 5/17. 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.
Sat 8/86:00 pm
IAD
-
EYW
1 stop25h 13m
Multiple Airlines
Fri 8/1412:07 pm
EYW
-
IAD
1 stop24h 19m
Multiple Airlines
Deal found 5/17$320
This Kiwi.com deal was found by Cheapflights users on 5/17. 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.
Sun 8/91:36 pm
IAD
-
EYW
1 stop25h 01m
Multiple Airlines
Thu 8/137:53 pm
EYW
-
IAD
1 stop15h 50m
Multiple Airlines
Deal found 5/17$321
This Kiwi.com deal was found by Cheapflights users on 5/17. 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.
Thu 6/45:25 pm
IAD
-
EYW
2 stops25h 02m
Multiple Airlines
Mon 6/812:07 pm
EYW
-
IAD
1 stop6h 35m
Multiple Airlines
Deal found 5/17$322
This Kiwi.com deal was found by Cheapflights users on 5/17. 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.
Thu 6/111:38 pm
IAD
-
EYW
1 stop24h 57m
Multiple Airlines
Mon 6/1512:07 pm
EYW
-
IAD
2 stops22h 15m
Multiple Airlines
Deal found 5/17$325
This Kiwi.com deal was found by Cheapflights users on 5/18. 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 5/287:27 pm
IAD
-
EYW
1 stop18h 34m
Multiple Airlines
Sun 5/319:24 pm
EYW
-
IAD
2 stops18h 22m
Multiple Airlines
Deal found 5/18$327
This Kiwi.com deal was found by Cheapflights users on 5/15. 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.
Sat 7/256:00 pm
IAD
-
EYW
1 stop25h 13m
Multiple Airlines
Sun 8/29:22 pm
EYW
-
IAD
1 stop15h 29m
Multiple Airlines
Deal found 5/15$328
This Kiwi.com deal was found by Cheapflights users on 5/17. 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.
Fri 6/129:02 pm
IAD
-
EYW
2 stops16h 56m
Multiple Airlines
Tue 6/161:14 pm
EYW
-
IAD
1 stop22h 33m
Multiple Airlines
Deal found 5/17$329

Find flight deals from Dulles Intl to Key West

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Key West (EYW). 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 May 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$314
(American Airlines)

One-way from

$114
(Kiwi.com)

Popular in

October

Cheapest in

January

Average price

$550

Good round-trip deal

$476 or less
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Key West flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Key West flights.
Search Deals
From Washington, D.C. Dulles Intl to Key West
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Key West
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($17 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals
Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Key West.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Key West 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 May 19, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Key West that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Sat 9/26

1:00 pm-7:45 pm

1 stop6h 45m

Key West

Sat 10/3

6:00 pm-12:10 am

1 stop6h 10m

$356

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Mon 6/1

12:40 pm-7:49 pm

1 stop7h 09m

Key West

Sat 6/6

1:10 pm-8:02 pm

1 stop6h 52m

$359

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Thu 6/4

10:11 am-5:23 pm

1 stop7h 12m

Key West

Fri 6/19

7:50 am-2:02 pm

1 stop6h 12m

$364

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Thu 8/6

10:16 am-5:20 pm

1 stop7h 04m

Key West

Mon 8/10

6:15 pm-12:33 am

1 stop6h 18m

$469

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Thu 7/30

6:00 am-11:00 am

1 stop5h 00m

Key West

Sun 8/2

6:18 pm-12:41 am

1 stop6h 23m

$519
Quickest round-trip

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Sun 11/1

6:00 am-10:58 am

1 stop4h 58m

Key West

Wed 11/4

11:45 am-4:36 pm

1 stop4h 51m

$547

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Sun 8/23

3:03 pm-7:54 pm

1 stop4h 51m

Key West

Thu 8/27

7:40 am-2:04 pm

1 stop6h 24m

$547

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Sat 9/5

1:00 pm-7:45 pm

1 stop6h 45m

Key West

Tue 9/8

6:00 pm-12:10 am

1 stop6h 10m

$609

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Sat 10/3

8:15 am-10:11 pm

2 stops13h 56m

Key West

Wed 10/7

2:20 pm-10:59 pm

1 stop8h 39m

$661

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Sat 6/6

10:10 pm-1:30 pm

2 stops15h 20m

Key West

Wed 6/10

2:26 pm-11:48 am

2 stops21h 22m

$667

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/18

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

Compare providers for flights from Dulles Intl to Key West

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 Dulles Intl to Key West in May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust 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 Washington, D.C. Dulles Intl Airport-Key West flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Key West flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Key West flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Key West 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 Washington, D.C. Dulles Intl Airport-Key West 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 Dulles Intl to Key West

Have a flexible travel schedule? Discover the best time to fly to Key West from Dulles Intl 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 Washington, D.C. Dulles Intl Airport to Key West

How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Key West?

The price you pay for your flight from Washington, D.C. Dulles Intl Airport to Key West may vary depending on when you book. For the best chance of a lower fare, look to book 46 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Key West (average of $392). Flying from Washington, D.C. Dulles Intl Airport to Key West in October is currently the most expensive (average of $608). 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.

How much does it cost to fly round-trip from Washington, D.C. Dulles Intl Airport to Key West?

Reviews of airlines servicing Key West

Get insights into the airlines that provide service to Key West. 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 Key West. Reviews last updated May 19, 2026.
Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Key West, such as Delta,United Airlines, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,455 reviews

Crew

8.5

Food

7.2

Boarding

8.1

Entertainment

7.8

Overall

7.9

Comfort

7.8

Reviews

1 / 20
4.0
Okay

Joel,May 2026

ATL - JAX

The flight was delivered 50 minutes and taxing took what felt like 20 minutes to takeoff.
Delta
7.9
Good
8,455 reviews
Delta
7.9
Good
8,455 reviews

Crew

8.5

Food

7.2

Boarding

8.1

Entertainment

7.8

Overall

7.9

Comfort

7.8

Reviews

1 / 20
4.0
Okay

Joel,May 2026

ATL - JAX

The flight was delivered 50 minutes and taxing took what felt like 20 minutes to takeoff.
United Airlines
7.4
Good
9,734 reviews
Delta
7.9
Good
8,455 reviews

Crew

8.5

Food

7.2

Boarding

8.1

Entertainment

7.8

Overall

7.9

Comfort

7.8

Reviews

1 / 20
4.0
Okay

Joel,May 2026

ATL - JAX

The flight was delivered 50 minutes and taxing took what felt like 20 minutes to takeoff.
American Airlines
7.1
Good
11,648 reviews
Delta
7.9
Good
8,455 reviews

Crew

8.5

Food

7.2

Boarding

8.1

Entertainment

7.8

Overall

7.9

Comfort

7.8

Reviews

1 / 20
4.0
Okay

Joel,May 2026

ATL - JAX

The flight was delivered 50 minutes and taxing took what felt like 20 minutes to takeoff.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Key West. 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 into for flights to Key West from Washington, D.C. Dulles Intl?

    Key West (EYW) is the airport you will fly into if you book a flight from Washington, D.C. Dulles Intl to Key West. You should not have trouble finding flights to Key West from Washington, D.C. Dulles Intl; the airport handles an average of 0 inbound flights from Washington, D.C. Dulles Intl per day. You should also have plenty of airline options to choose from since 3 airlines have flights to the Key West airport from Washington, D.C. Dulles Intl. It is only a 2.6 mi journey from Key West (EYW) to Key West’s city center.

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

    Airlines like Delta fly from Washington, D.C. Dulles Intl Airport to Key West in about 6h 45m. The time it takes to get you to your destination can typically vary by up to . Airlines will cover a distance of 1025 mi.

  • What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Key West round-trip?

    According to our current data, Delta ($248), United Airlines ($279), and American Airlines ($358) offers the cheapest pricing from Washington, D.C. Dulles Intl Airport to Key West. Delta is 48% cheaper than the average price of flights available within the next 90 days to this destination.

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

    The cheapest flight price from Washington, D.C. Dulles Intl Airport to Key West is $426. On average you can expect to pay $476. The most popular route, (Washington, D.C. Dulles Intl - Key West), can usually be booked for $224.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Dulles Intl to Key West 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 Washington, D.C. Dulles Intl Airport to Key West?

    Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Key West (average of $392). Flying from Washington, D.C. Dulles Intl Airport to Key West in October is currently the most expensive (average of $608). 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

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Alternative routes for Dulles Intl to Key West

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Dulles Intl to Key West

Discover the top 3 airlines that operate flights from Dulles Intl to Key West. 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 May 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$248Average$502FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$279Average$469FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$358Average$512FlexibilityNo cancel feeOn-time71%

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