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Key West

$95+ 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 11/23. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — EYW
Nov 4 — Nov 111
Tue 11/4
Tue 11/11
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 August or July, booked 51 days in advance, depart on a Tuesday or Wednesday and return on a Monday

Cheap 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 October 5, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$279
(Delta)

One-way from

$95
(Kiwi.com)

Popular in

November

Cheapest in

August

Average price

$506

Good round-trip deal

$333 or less

Good one-way deal

$258 or less
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Key West flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Key West flights.
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From Washington, D.C. Dulles Intl to Key West
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One-way flight from Washington, D.C. Dulles Intl to Key West
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Highest demand for flights based on searches. 16% potential increase in price ($95 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Key West.
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Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Key West.
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Find 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 October 5, 2025.

This Delta deal was found by Cheapflights users on 10/3. 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.
Sat 10/183:33 pmIAD - EYW
1 stop4h 33mDelta
Tue 10/2112:22 pmEYW - IAD
1 stop4h 35mDelta
Deal found 10/3$279
This Kiwi.com deal was found by Cheapflights users on 10/2. 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 11/88:36 pmIAD - EYW
1 stop11h 39mMultiple Airlines
Sat 11/1510:47 amEYW - IAD
2 stops13h 08mMultiple Airlines
Deal found 10/2$281
This Kiwi.com deal was found by Cheapflights users on 10/3. 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 11/243:00 pmIAD - EYW
1 stop18h 35mMultiple Airlines
Thu 11/2710:59 amEYW - IAD
1 stop5h 32mMultiple Airlines
Deal found 10/3$286
This Kiwi.com deal was found by Cheapflights users on 10/3. 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 12/188:16 pmIAD - EYW
1 stop17h 27mMultiple Airlines
Sun 12/213:24 pmEYW - IAD
1 stop16h 11mMultiple Airlines
Deal found 10/3$287
This Delta deal was found by Cheapflights users on 10/3. 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.
Sat 12/66:55 amIAD - EYW
1 stop4h 47mDelta
Tue 12/93:02 pmEYW - IAD
1 stop6h 27mDelta
Deal found 10/3$289
This Mytrip deal was found by Cheapflights users on 10/4. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/313:53 pmIAD - EYW
1 stop5h 02mAllegiant Air
Sun 11/28:33 pmEYW - IAD
2 stops20h 37mAllegiant Air
Deal found 10/4$290
This Kiwi.com deal was found by Cheapflights users on 10/3. 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 10/248:53 pmIAD - EYW
1 stop13h 14mMultiple Airlines
Mon 10/2711:11 amEYW - IAD
2 stops33h 09mMultiple Airlines
Deal found 10/3$291
This Kiwi.com deal was found by Cheapflights users on 10/3. 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 12/218:16 pmIAD - EYW
1 stop17h 27mMultiple Airlines
Sun 12/288:55 amEYW - IAD
1 stop22h 40mMultiple Airlines
Deal found 10/3$295
This Kiwi.com deal was found by Cheapflights users on 10/3. 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 12/188:16 pmIAD - EYW
1 stop17h 27mMultiple Airlines
Mon 12/221:10 pmEYW - IAD
1 stop18h 25mMultiple Airlines
Deal found 10/3$297
This Kiwi.com deal was found by Cheapflights users on 10/3. 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 11/238:23 pmIAD - EYW
1 stop18h 00mMultiple Airlines
Fri 11/285:58 pmEYW - IAD
1 stop18h 40mMultiple Airlines
Deal found 10/3$299
This Kiwi.com deal was found by Cheapflights users on 10/3. 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 12/218:16 pmIAD - EYW
1 stop17h 27mAllegiant Air
Mon 12/2910:01 pmEYW - IAD
2 stops39h 44mAllegiant Air
Deal found 10/3$300
This Kiwi.com deal was found by Cheapflights users on 10/4. 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 12/218:16 pmIAD - EYW
1 stop17h 27mAllegiant Air
Tue 12/303:15 pmEYW - IAD
2 stops22h 30mAllegiant Air
Deal found 10/4$301

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 October 5, 2025.
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

Sat 11/1

3:33 pm-8:06 pm

1 stop4h 33m

Key West

Wed 11/5

7:40 am-2:38 pm

1 stop6h 58m

$324

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Sat 11/8

3:33 pm-8:06 pm

1 stop4h 33m

Key West

Sat 11/15

6:18 pm-11:19 pm

1 stop5h 01m

$324

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Thu 1/1

6:00 am-10:52 am

1 stop4h 52m

Key West

Tue 1/6

6:00 pm-11:17 pm

1 stop5h 17m

$364

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Sat 10/11

3:33 pm-8:06 pm

1 stop4h 33m

Key West

Wed 10/15

6:17 pm-11:18 pm

1 stop5h 01m

$369

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Sun 11/16

12:36 pm-7:53 pm

1 stop7h 17m

Key West

Wed 11/19

2:58 pm-9:32 pm

1 stop6h 34m

$369

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Mon 12/15

12:30 pm-5:15 pm

1 stop4h 45m

Key West

Wed 12/17

3:02 pm-9:29 pm

1 stop6h 27m

$369

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Sat 10/11

3:33 pm-8:06 pm

1 stop4h 33m

Key West

Thu 10/16

6:17 pm-12:12 am

1 stop5h 55m

$369

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Thu 12/18

8:15 am-11:41 am

Nonstop3h 26m

Key West

Tue 12/23

3:09 pm-11:06 pm

1 stop7h 57m

$385

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Tue 10/28

10:07 pm-1:52 pm

2 stops15h 45m

Key West

Sat 11/1

3:00 pm-10:58 pm

1 stop7h 58m

$401

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Sun 11/23

8:23 pm-2:23 pm

1 stop18h 00m

$95

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/3

Showing 1-10 of 19 results
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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 October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice 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 October 3, 2025.

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 50 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, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Key West (average of $328). Flying from Washington, D.C. Dulles Intl Airport to Key West in March is currently the most expensive (average of $488). 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 October 5, 2025.

It’s optimal to fly from Washington, D.C. Dulles Intl Airport to Key West at noon. By choosing this option you can save up to 29% on the cost of your flight, compared to a flight in the morning.

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 October 5, 2025.
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
8.0
Very good
7,970 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

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
8.0
Very good
7,970 reviews
Delta
8.0
Very good
7,970 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

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
8,953 reviews
Delta
8.0
Very good
7,970 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

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
11,041 reviews
Delta
8.0
Very good
7,970 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

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 Delta fly from Washington, D.C. Dulles Intl Airport to Key West in about 4h 33m. 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 ($179), United Airlines ($248), and American Airlines ($348) offers the cheapest pricing from Washington, D.C. Dulles Intl Airport to Key West. Delta is 62% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Key West one-way?

    One-way options have recently been found by users for as low as $95 on Allegiant Air. Other airlines that offer cheap prices include Delta from $126 and United Airlines from $136 one-way.

  • 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 $258. On average you can expect to pay $296. The most popular route, (Washington, D.C. Dulles Intl - Key West), can usually be booked for $228.

  • 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, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Key West (average of $328). Flying from Washington, D.C. Dulles Intl Airport to Key West in March is currently the most expensive (average of $488). 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 October 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$179Average$494FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$248Average$484FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$348Average$472FlexibilityNo cancel feeOn-time71%

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