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Key West

$107+ 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 3/8. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — EYW
Mar 21 — Mar 281
Sat 3/21
Sat 3/28
1 adult, Economy
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Find cheap flights from Dulles Intl to Key West with Cheapflights

1. Tell us where you want to go

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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Key West are usually found in July or August, booked 48 days in advance, depart on a Wednesday or Tuesday and return on a Monday

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 February 19, 2026.

This Delta deal was found by Cheapflights users on 2/15. 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.
Sun 3/112:35 pm
IAD
-
EYW
1 stop7h 07m
Delta
Wed 3/116:25 pm
EYW
-
IAD
1 stop6h 02m
Delta
Deal found 2/15$299
This Kiwi.com deal was found by Cheapflights users on 2/15. 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.
Sun 3/223:42 pm
IAD
-
EYW
1 stop18h 29m
Multiple Airlines
Thu 4/212:25 pm
EYW
-
IAD
2 stops12h 11m
Multiple Airlines
Deal found 2/15$300
This Kiwi.com deal was found by Cheapflights users on 2/18. 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 3/193:42 pm
IAD
-
EYW
1 stop18h 29m
Multiple Airlines
Mon 3/232:35 pm
EYW
-
IAD
2 stops9h 56m
Multiple Airlines
Deal found 2/18$301
This Kiwi.com deal was found by Cheapflights users on 2/16. 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.
Sun 3/88:09 am
IAD
-
EYW
1 stop28h 17m
Multiple Airlines
Fri 3/132:59 pm
EYW
-
IAD
2 stops33h 32m
Multiple Airlines
Deal found 2/16$302
This Kiwi.com deal was found by Cheapflights users on 2/16. 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.
Sun 2/228:30 pm
IAD
-
EYW
1 stop13h 41m
Multiple Airlines
Wed 2/2512:38 pm
EYW
-
IAD
2 stops28h 05m
Multiple Airlines
Deal found 2/16$303
This Delta deal was found by Cheapflights users on 2/15. 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.
Tue 4/710:06 am
IAD
-
EYW
1 stop7h 24m
Delta
Tue 4/146:23 pm
EYW
-
IAD
1 stop6h 19m
Delta
Deal found 2/15$304
This Kiwi.com deal was found by Cheapflights users on 2/16. 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.
Sun 3/294:09 pm
IAD
-
EYW
1 stop18h 02m
Multiple Airlines
Wed 4/112:25 pm
EYW
-
IAD
2 stops19h 22m
Multiple Airlines
Deal found 2/16$305
This United Airlines deal was found by Cheapflights users on 2/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/166:00 am
IAD
-
EYW
1 stop7h 23m
United Airlines
Thu 3/196:28 pm
EYW
-
IAD
Nonstop2h 50m
United Airlines
Deal found 2/17$307
This United Airlines deal was found by Cheapflights users on 2/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/201:15 pm
IAD
-
EYW
Nonstop3h 21m
United Airlines
Fri 3/276:28 pm
EYW
-
IAD
Nonstop2h 50m
United Airlines
Deal found 2/18$308
This Kiwi.com deal was found by Cheapflights users on 2/16. 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.
Sun 2/228:30 pm
IAD
-
EYW
1 stop13h 41m
Multiple Airlines
Fri 2/271:06 pm
EYW
-
IAD
2 stops20h 28m
Multiple Airlines
Deal found 2/16$309
This Kiwi.com deal was found by Cheapflights users on 2/17. 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 2/268:27 pm
IAD
-
EYW
1 stop13h 44m
Multiple Airlines
Sun 3/14:13 pm
EYW
-
IAD
2 stops18h 27m
Multiple Airlines
Deal found 2/17$311
This United Airlines deal was found by Cheapflights users on 2/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/56:00 am
IAD
-
EYW
1 stop7h 23m
United Airlines
Mon 3/96:28 pm
EYW
-
IAD
Nonstop2h 50m
United Airlines
Deal found 2/16$312

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 February 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$299
(Delta)

One-way from

$107
(Kiwi.com)

Popular in

October

Cheapest in

July

Average price

$520

Good round-trip deal

$362 or less

Good one-way deal

$364 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. 5% potential increase in price ($28 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Key West.
Search Deals
Price to beat on a one-way 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 February 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

Dulles Intl

Fly to

Key West

Route

Depart

Return

Price

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Thu 3/12

1:15 pm-4:36 pm

Nonstop3h 21m

Key West

Thu 3/26

6:28 pm-9:18 pm

Nonstop2h 50m

$304

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Fri 4/17

3:00 pm-7:40 pm

1 stop4h 40m

Key West

Thu 4/23

6:23 pm-12:42 am

1 stop6h 19m

$304

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Thu 3/19

1:15 pm-4:36 pm

Nonstop3h 21m

Key West

Thu 3/26

6:28 pm-9:18 pm

Nonstop2h 50m

$304

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Wed 4/22

3:00 pm-7:40 pm

1 stop4h 40m

Key West

Tue 4/28

11:45 am-4:31 pm

1 stop4h 46m

$304

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Mon 3/16

6:00 am-1:23 pm

1 stop7h 23m

Key West

Thu 3/19

6:28 pm-9:18 pm

Nonstop2h 50m

$307

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Wed 4/15

1:15 pm-4:42 pm

Nonstop3h 27m

Key West

Wed 4/22

6:22 pm-9:25 pm

Nonstop3h 03m

$318

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Sun 3/1

10:08 am-5:01 pm

1 stop6h 53m

Key West

Wed 3/11

6:25 pm-12:27 am

1 stop6h 02m

$324

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Tue 6/30

6:00 am-10:58 am

1 stop4h 58m

Key West

Tue 7/7

6:00 pm-12:09 am

1 stop6h 09m

$329

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Mon 3/9

1:15 pm-4:36 pm

Nonstop3h 21m

Key West

Thu 3/12

6:28 pm-9:18 pm

Nonstop2h 50m

$332

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Tue 5/26

6:08 am-10:53 am

1 stop4h 45m

Key West

Sat 5/30

6:22 pm-12:46 am

1 stop6h 24m

$334

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/18

Showing 1-10 of 18 results
1
2

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 February.
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?

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to Key West. Price data was last updated on February 18, 2026.

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 47 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, July is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Key West (average of $179). Flying from Washington, D.C. Dulles Intl Airport to Key West in May is currently the most expensive (average of $418). 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.

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

Find hourly flight availability from Dulles Intl to Key West. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 19, 2026.

When flying from Washington, D.C. Dulles Intl Airport to Key West, 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 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 February 19, 2026.
Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Key West, such as Delta, United Airlines, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,212 reviews

Food

7.2

Crew

8.5

Comfort

7.9

Entertainment

7.8

Boarding

8.1

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.
Delta
7.9
Good
8,212 reviews
Delta
7.9
Good
8,212 reviews

Food

7.2

Crew

8.5

Comfort

7.9

Entertainment

7.8

Boarding

8.1

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.
United Airlines
7.4
Good
9,321 reviews
Delta
7.9
Good
8,212 reviews

Food

7.2

Crew

8.5

Comfort

7.9

Entertainment

7.8

Boarding

8.1

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.
American Airlines
7.2
Good
11,313 reviews
Delta
7.9
Good
8,212 reviews

Food

7.2

Crew

8.5

Comfort

7.9

Entertainment

7.8

Boarding

8.1

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.

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 United Airlines and Delta fly from Washington, D.C. Dulles Intl Airport to Key West in about 3h 21m. The time it takes to get you to your destination can typically vary by up to 1h 19m. Airlines will cover a distance of 1025 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    According to our current data, Delta ($179), United Airlines ($259), and American Airlines ($337) offers the cheapest pricing from Washington, D.C. Dulles Intl Airport to Key West. Delta is 61% cheaper than the average price of flights available within the next 90 days to this destination.

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

    The top 3 most reliable airlines when flying from Washington, D.C. Dulles Intl Airport to Key West are Mesa Airlines (89%), United Airlines (81%) and Republic Airways (79%).

  • 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 $249. On average you can expect to pay $417. The most popular route, (Washington, D.C. Dulles Intl - Key West), can usually be booked for $179.

  • 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, July is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Key West (average of $179). Flying from Washington, D.C. Dulles Intl Airport to Key West in May is currently the most expensive (average of $418). 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 February 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$179Average$479FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$268Average$475FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$337Average$516FlexibilityNo cancel feeOn-time71%

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