$116 Cheap Flights from Washington (IAD) to Key West (EYW)

View $116 flight on Tue, Feb 3, 2026Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to Key West Intl. Airport (EYW)

Cheap Flights from Washington to Key West (IAD-EYW)

Prices were available within the past 7 days and start at $116 for one-way flights and $229 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Mon, Jan 26 - Wed, Feb 4
IAD
Washington
EYW
Key West
$229 Roundtrip, found 6 hours ago
$229
Roundtrip
found 6 hours ago
Select United flight, departing Mon, Jan 26 from Washington to Key West, returning Wed, Feb 4, priced at $229 found 6 hours ago
United
Mon, Jan 26 - Wed, Feb 4
IAD
Washington
EYW
Key West
$239 Roundtrip, found 6 hours ago
$239
Roundtrip
found 6 hours ago
Select United flight, departing Mon, Jan 26 from Washington to Key West, returning Wed, Feb 4, priced at $239 found 6 hours ago
Delta
Mon, Jan 26 - Wed, Feb 4
IAD
Washington
EYW
Key West
$249 Roundtrip, found 6 hours ago
$249
Roundtrip
found 6 hours ago
Select Delta flight, departing Mon, Jan 26 from Washington to Key West, returning Wed, Feb 4, priced at $249 found 6 hours ago
Delta
Tue, Nov 4 - Wed, Nov 5
IAD
Washington
EYW
Key West
$251 Roundtrip, found 7 hours ago
$251
Roundtrip
found 7 hours ago
Select Delta flight, departing Tue, Nov 4 from Washington to Key West, returning Wed, Nov 5, priced at $251 found 7 hours ago
United
Mon, Dec 15 - Mon, Dec 22
IAD
Washington
EYW
Key West
$252 Roundtrip, found 2 days ago
$252
Roundtrip
found 2 days ago
Select United flight, departing Mon, Dec 15 from Washington to Key West, returning Mon, Dec 22, priced at $252 found 2 days ago
Delta
Wed, Nov 19 - Wed, Dec 10
IAD
Washington
EYW
Key West
$255 Roundtrip, found 12 hours ago
$255
Roundtrip
found 12 hours ago
Select Delta flight, departing Wed, Nov 19 from Washington to Key West, returning Wed, Dec 10, priced at $255 found 12 hours ago
United
Wed, Mar 11 - Wed, Mar 18
IAD
Washington
EYW
Key West
$255 Roundtrip, found 3 days ago
$255
Roundtrip
found 3 days ago
Select United flight, departing Wed, Mar 11 from Washington to Key West, returning Wed, Mar 18, priced at $255 found 3 days ago
United
Sat, Jan 24 - Wed, Jan 28
IAD
Washington
EYW
Key West
$257 Roundtrip, found 1 day ago
$257
Roundtrip
found 1 day ago
Select United flight, departing Sat, Jan 24 from Washington to Key West, returning Wed, Jan 28, priced at $257 found 1 day ago
United
Sat, Nov 8 - Wed, Nov 12
IAD
Washington
EYW
Key West
$259 Roundtrip, found 9 hours ago
$259
Roundtrip
found 9 hours ago
Select United flight, departing Sat, Nov 8 from Washington to Key West, returning Wed, Nov 12, priced at $259 found 9 hours ago
American Airlines
Thu, Jan 1 - Wed, Jan 7
IAD
Washington
EYW
Key West
$369 Roundtrip, found 9 hours ago
$369
Roundtrip
found 9 hours ago
Select American Airlines flight, departing Thu, Jan 1 from Washington to Key West, returning Wed, Jan 7, priced at $369 found 9 hours ago

Find the cheapest month to fly from Washington (IAD) to Key West (EYW)

September is typically the cheapest month to fly

From $198 - $503 per traveler.

Alternative airports near Key West

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Key West Intl. EYW. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $593
EYW
Key West Intl.
CheapestClosest
Average driving time to city center8 min
Flights from $593

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Key West Intl. Airport (EYW) cost?
Secure a cheap one-way flight from $116 or cheap return flight from $229 from Washington Dulles Intl. Airport (IAD) to Key West Intl. Airport (EYW) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Washington Dulles Intl. Airport (IAD) to Key West Intl. Airport (EYW)?
The cheapest month to fly from IAD to EYW is January, when there's less demand. Off-peak season is generally when you'll find cheap fares for travel between these airports.
Which airlines fly direct from Washington Dulles Intl. Airport (IAD) to Key West Intl. Airport (EYW)?
Take a direct flight with United Airlines and fly straight from Washington Dulles Intl. Airport (IAD) to Key West Intl. Airport (EYW).
What is the cheapest airline that flies from Washington Dulles Intl. Airport (IAD) to Key West Intl. Airport (EYW)?
Use the filters on Expedia to compare airlines and find the cheapest carrier that'll fly you from IAD to EYW. Then, sort your results by "Price (lowest to highest)" to snag a good deal.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Key West Intl. Airport (EYW)?
On average, there is just 1 nonstop flight taking off from Washington Dulles Intl. Airport (IAD) to Key West Intl. Airport (EYW) each day. If this doesn't fit your travel plans, check out flights with layovers. Just customize your search on Expedia to include one or more stops to discover a better alternative.
What are the most popular departure times for flights from Washington Dulles Intl. Airport (IAD) to Key West Intl. Airport (EYW)?
More passengers fly between IAD and EYW at 8 AM than at any other point in the day. Prefer a quieter experience? Pick a flight outside the busiest times and you could save on your fare as well.
What day of the week has the most flights from IAD to EYW?
If you fly on a Friday, you'll get the greatest range of options for flights from Washington Dulles Intl. Airport (IAD) to Key West Intl. Airport (EYW).
What is the earliest flight from Washington Dulles Intl. Airport (IAD) to Key West Intl. Airport (EYW)?
The first flight of the day departing from Washington Dulles Intl. Airport (IAD) is at around 8:25AM UTC-5. Catch this flight and you'll arrive at Key West Intl. Airport (EYW) at approximately 11:39AM UTC-5. The total time in the air is 3h 14m.
How long does it take to fly from Washington Dulles Intl. Airport (IAD) to Key West Intl. Airport (EYW)?
The average flight time from IAD to EYW is 3 hours and 14 minutes, covering a total distance of 1,050 mi.
What is the best time to fly from Washington Dulles Intl. Airport (IAD) to Key West Intl. Airport (EYW)?
To touch down at Key West Intl. Airport (EYW) on schedule, opt for a flight that takes off from Washington Dulles Intl. Airport (IAD) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Key West from Washington Dulles Intl. Airport (IAD)?
If you're on a direct flight from Washington Dulles Intl. Airport (IAD) to Key West, Key West Intl. Airport (EYW) is the only airport you can touch down at.
Is it cheaper to buy a plane ticket from Washington Dulles Intl. Airport (IAD) to Key West Intl. Airport (EYW) last-minute?
Last-minute bookings from IAD to EYW are generally more expensive. To secure the best rates, start searching for flights as early as possible. That being said, if you can play around with your travel dates, you may score a cheap fare right before you leave.
Is it cheaper to book an IAD to EYW flight and hotel package?
You'll typically save money by booking an IAD to EYW flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one convenient place. Once you've selected your ideal accommodations and flights, consider other add-ons like car rentals, tours and activities.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Key West Intl. Airport (EYW)?
If you reserved your IAD to EYW flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more information.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Key West Intl.
Airlines serving
American Airlines, Delta, United
Roundtrip price
$229
Distance
1026 mi

Book with confidence

Washington to Key West Flights

The cheapest times to fly from Washington to Key West

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Key West are during the month of January. You can find some of the cheapest flights from Washington to Key West with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Key West

Sunday is one of the best days to book for cheap flights from Washington to Key West: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Washington to Key West

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Key West in 2025. You can also book with separate airlines for your outbound and return journeys, from $116 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Key West flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to Key West airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Washington to Key West Flights

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*Available to One Key members.