$110 Cheap Flights from Key West (EYW) to Washington (IAD)

View $110 flight on Sat, Aug 30, 2025Opens in a new window

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

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

Prices were available within the past 7 days and start at $110 for one-way flights and $219 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, Aug 30 - Sun, Aug 31
EYW
Key West
IAD
Washington
$219 Roundtrip, found 4 days ago
$219
Roundtrip
found 4 days ago
Select Delta flight, departing Sat, Aug 30 from Key West to Washington, returning Sun, Aug 31, priced at $219 found 4 days ago
Delta
Sat, Aug 30 - Tue, Sep 2
EYW
Key West
IAD
Washington
$234 Roundtrip, found 4 days ago
$234
Roundtrip
found 4 days ago
Select Delta flight, departing Sat, Aug 30 from Key West to Washington, returning Tue, Sep 2, priced at $234 found 4 days ago
United
Wed, Jan 14 - Wed, Jan 21
EYW
Key West
IAD
Washington
$239 Roundtrip, found 6 days ago
$239
Roundtrip
found 6 days ago
Select United flight, departing Wed, Jan 14 from Key West to Washington, returning Wed, Jan 21, priced at $239 found 6 days ago
Delta
Wed, Nov 12 - Sat, Nov 15
EYW
Key West
IAD
Washington
$249 Roundtrip, found 2 hours ago
$249
Roundtrip
found 2 hours ago
Select Delta flight, departing Wed, Nov 12 from Key West to Washington, returning Sat, Nov 15, priced at $249 found 2 hours ago
Delta
Tue, Aug 26 - Sat, Aug 30
EYW
Key West
IAD
Washington
$259 Roundtrip, found 2 days ago
$259
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Aug 26 from Key West to Washington, returning Sat, Aug 30, priced at $259 found 2 days ago
Delta
Wed, Aug 20 - Wed, Aug 27
EYW
Key West
IAD
Washington
$264 Roundtrip, found 19 hours ago
$264
Roundtrip
found 19 hours ago
Select Delta flight, departing Wed, Aug 20 from Key West to Washington, returning Wed, Aug 27, priced at $264 found 19 hours ago
Delta
Fri, Aug 29 - Mon, Sep 1
EYW
Key West
IAD
Washington
$274 Roundtrip, just found
$274
Roundtrip
just found
Select Delta flight, departing Fri, Aug 29 from Key West to Washington, returning Mon, Sep 1, priced at $274 just found
Delta
Fri, Aug 15 - Mon, Aug 18
EYW
Key West
IAD
Washington
$279 Roundtrip, found 5 hours ago
$279
Roundtrip
found 5 hours ago
Select Delta flight, departing Fri, Aug 15 from Key West to Washington, returning Mon, Aug 18, priced at $279 found 5 hours ago
United
Wed, Jan 14 - Wed, Jan 21
EYW
Key West
IAD
Washington
$282 Roundtrip, found 6 days ago
$282
Roundtrip
found 6 days ago
Select United flight, departing Wed, Jan 14 from Key West to Washington, returning Wed, Jan 21, priced at $282 found 6 days ago
American Airlines
Sat, Aug 30 - Wed, Sep 3
EYW
Key West
IAD
Washington
$339 Roundtrip, found 6 days ago
$339
Roundtrip
found 6 days ago
Select American Airlines flight, departing Sat, Aug 30 from Key West to Washington, returning Wed, Sep 3, priced at $339 found 6 days ago

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

April is typically the cheapest month to fly

From $198 - $694 per traveler.

Graph displaying average flight prices per month

Alternative airports near Washington

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

Select flight to Ronald Reagan Washington National DCA. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $580
DCA
Ronald Reagan Washington National
CheapestClosest
Average driving time to city center8 min
Flights from $580
Flights from Key West (EYW) to Washington (IAD)
Origin airport
Key West Intl.
Destination airport
Washington Dulles Intl.
Airlines serving
American Airlines, Delta, United
Roundtrip price
$218
Distance
1026 mi

Key West to Washington Flights

The cheapest times to fly from Key West to Washington

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 Key West to Washington are during the month of August. You can find some of the cheapest flights from Key West to Washington with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Key West to Washington: 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 Key West to Washington

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 Key West to Washington in 2025. You can also book with separate airlines for your outbound and return journeys, from $110 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 Key West to Washington 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 Key West to Washington 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.

 

Frequently asked questions

How much does a flight from Key West Intl. Airport (EYW) to Washington Dulles Intl. Airport (IAD) cost?
Discover the latest flight deals from EYW to IAD by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from EYW to IAD?
The cheapest flights from EYW to IAD are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Key West Intl. Airport (EYW) to Washington Dulles Intl. Airport (IAD)?
Fly nonstop from Key West Intl. Airport (EYW) to Washington Dulles Intl. Airport (IAD) on a United Airlines flight.
What is the cheapest airline that flies from EYW to IAD?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from EYW to IAD. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Key West Intl. Airport (EYW) to Washington Dulles Intl. Airport (IAD)?
On average, Key West Intl. Airport (EYW) only has 1 direct flight to Washington Dulles Intl. Airport (IAD) per day. To explore more options, try our easy-to-use filter tool. Just enter your details, then click on "1 Stop" or "2+ Stops" to discover flights with layovers.
What are the most popular departure times for flights from Key West Intl. Airport (EYW) to Washington Dulles Intl. Airport (IAD)?
The 12 PM departures from EYW to IAD see the highest demand. They can also be more expensive. If you want to save on your fare, book during off-peak hours.
What day of the week has the most flights from EYW to IAD?
If you jet off on a Friday, you'll get the greatest range of choices for flights from Key West Intl. Airport (EYW) to Washington Dulles Intl. Airport (IAD).
What is the earliest flight from Key West Intl. Airport (EYW) to Washington Dulles Intl. Airport (IAD)?
The earliest flight out of Key West Intl. Airport (EYW) is at around 12:25PM UTC-5. Board this flight and you'll land at Washington Dulles Intl. Airport (IAD) at approximately 3:07PM UTC-5. The overall travel time is 2h 42m.
How long does it take to fly from Key West Intl. Airport (EYW) to Washington Dulles Intl. Airport (IAD)?
The average flight time from EYW to IAD is 2 hours and 42 minutes, covering a total distance of 1,050 mi.
What is the best time to fly from Key West Intl. Airport (EYW) to Washington Dulles Intl. Airport (IAD)?
Choose a flight from Key West Intl. Airport (EYW) to Washington Dulles Intl. Airport (IAD) that takes off before 3 PM to reduce the risk of delays and cancellations. Departures later than this are on average 22% more likely to be canceled.**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 Washington from Key West Intl. Airport (EYW)?
If you're leaving on a direct flight from Key West Intl. Airport (EYW) to Washington, you can arrive at either Ronald Reagan Washington National Airport (DCA) or Washington Dulles Intl. Airport (IAD).
Is it cheaper to buy a plane ticket from Key West Intl. Airport (EYW) to Washington Dulles Intl. Airport (IAD) last-minute?
Last-minute fares from EYW to IAD are typically more expensive. To lock in the best rates, start looking for flights well in advance. That being said, if you can play around with your travel dates, you may score a cheap fare right before your trip.
Is it cheaper to book an EYW to IAD flight and hotel package?
You'll generally save money by booking an EYW to IAD flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one place. Once you've selected your ideal accommodations and flights, you can add extras such as car rentals, tours and activities.
Can I cancel or change the date of my flight from Key West Intl. Airport (EYW) to Washington Dulles Intl. Airport (IAD)?
Generally, it's possible to reschedule or cancel your EYW to IAD flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more details on our Customer Service portal.

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*Available to One Key members.