IAD - EYW

$181 Find Cheap Flights from Washington Dulles Airport to Key West

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Key West departing on 6/25. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Key West

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Key West, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Key West, as well as popular online travel agencies
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Flights Deals

Cheap Flights from Dulles Intl to Key West (IAD-EYW)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to Key West that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Dulles Intl to Key West

Thu, Oct 2 - Sun, Oct 5
 Logo
5:40 pm - 7:55 pmIAD-EYW
26h 15m2 stops
 Logo
12:32 pm - 3:49 pmEYW-IAD
27h 17m1 stop
Fri, Jul 4 - Fri, Jul 11
Delta Logo
12:49 pm - 5:34 pmIAD-EYW
4h 45m1 stop
Delta Logo
7:00 am - 2:42 pmEYW-IAD
7h 42m1 stop
$249Delta
Find Deal
Thu, Aug 7 - Sun, Aug 10
 Logo
12:55 pm - 4:36 pmIAD-EYW
27h 41m2 stops
 Logo
4:20 pm - 9:23 amEYW-IAD
17h 03m1 stop
Thu, Aug 21 - Sun, Aug 24
 Logo
5:40 pm - 4:51 pmIAD-EYW
23h 11m2 stops
 Logo
4:36 pm - 3:23 pmEYW-IAD
22h 47m1 stop
Fri, Aug 22 - Sun, Aug 24
Allegiant Air Logo
4:13 pm - 2:35 pmIAD-EYW
22h 22m2 stops
Allegiant Air Logo
4:36 pm - 3:23 pmEYW-IAD
22h 47m1 stop
$265Allegiant Air
Find Deal
Sat, Aug 2 - Thu, Aug 7
Allegiant Air Logo
2:40 pm - 3:30 pmIAD-EYW
24h 50m2 stops
Allegiant Air Logo
4:20 pm - 9:23 amEYW-IAD
17h 03m1 stop
$270Allegiant Air
Find Deal
Fri, Jul 4 - Fri, Jul 11
United Airlines Logo
6:15 am - 1:12 pmIAD-EYW
6h 57m1 stop
United Airlines Logo
1:00 pm - 8:39 pmEYW-IAD
7h 39m1 stop
$296United Airlines
Find Deal
Thu, Sep 11 - Sun, Sep 14
United Airlines Logo
5:25 pm - 8:00 amIAD-EYW
14h 35m1 stop
United Airlines Logo
6:45 pm - 11:16 amEYW-IAD
16h 31m1 stop
$303United Airlines
Find Deal
Tue, Nov 18 - Tue, Dec 2
American Airlines Logo
2:04 pm - 6:27 pmIAD-EYW
4h 23m1 stop
American Airlines Logo
5:26 pm - 11:57 pmEYW-IAD
6h 31m1 stop
$350American Airlines
Find Deal
Tue, Aug 5 - Wed, Aug 13
American Airlines Logo
6:35 am - 12:55 pmIAD-EYW
6h 20m2 stops
American Airlines Logo
1:13 pm - 6:52 pmEYW-IAD
5h 39m1 stop
$354American Airlines
Find Deal
Expert advice

Expert advice for your flight from Dulles Intl to Key West

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airports
IAD

For a smooth departure from IAD, use the AeroTrain to quickly navigate between terminals and avoid long walks.

Read more about IADby Stefanie Waldek
EYW

Upon arrival at EYW, taxis and rideshares are readily available, making it easy to reach Key West's attractions.

Read more about EYWby Paul Rubio
Our travel experts
Paul Rubio

Paul Rubio

Expert on EYW

Paul Rubio

Paul Rubio

Travel journalist and photographer Paul Rubio is a Miami native (and current resident), who has lived in nine countries and traveled to 137. He is an expert in luxury travel, eco-travel, loyalty programs, hotels, airports and airlines. He is a contributing editor at AFAR, Condé Nast Traveler, LUXURY Magazine, and Palm Beach Illustrated.

Read more
Stefanie Waldek

Stefanie Waldek

Expert on IAD

Stefanie Waldek

Stefanie Waldek

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more
Useful Info

KAYAK's insights & trends for Dulles Intl to Key West flights

Get data-powered insights and trends into flights from Dulles Intl to Key West to help you find the cheapest flights, the best time to fly and much more.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Key West, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. Dulles Intl Airport to Key West is July, where tickets cost $363 (return) on average. On the other hand, the most expensive months are December and May, where the average cost of round-trip tickets is $592 and $578 respectively.

Can I save money by flying with a layover from Washington, D.C. Dulles Intl Airport to Key West?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $697 on average.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Key West, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Washington, D.C. Dulles Intl Airport to Key West, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

Good to know

Low seasonSeptember
High seasonMarch
Cheapest flight$181
Best time to beat the crowds with an average 3% drop in price.
Most popular time to fly and prices are also 8% lower on average.
Flight from Washington Dulles Airport to Key West

When to book flights from Dulles Intl to Key West

Are your dates flexible? Find out the best times to travel from Dulles Intl to Key West based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Washington Dulles Airport to Key West flights

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Key West was $181 for a one-way ticket and $226 for a round-trip.

  • Do I need a passport to fly between Washington Dulles Airport and Key West?

    A passport is not required to fly from Washington Dulles Airport to Key West.

  • Which airlines offer Wi-Fi service onboard planes from Washington Dulles Airport to Key West?

    American Airlines, and JetBlue offer inflight Wi-Fi service on the Washington Dulles Airport to Key West flight route.

  • Which aircraft models fly most regularly from Washington Dulles Airport to Key West?

    The Boeing 737-700 is the aircraft model that flies most regularly on the Washington Dulles Airport to Key West flight route.

  • Which airline alliances offer flights from Washington Dulles Airport to Key West?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Washington Dulles Airport and Key West, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Washington, D.C. to Key West, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Key West are Delta and United Airlines. With an average price for the route of $430 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $493 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to Key West?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington Dulles Airport to Key West.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to Key West?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Key West from Washington Dulles Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington Dulles Airport to Key West?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Key West with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and EYW can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Key West?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Key West from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top 3 airlines serving from Dulles Intl to Key West

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Key West. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Dulles Intl to Key West? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 7950 reviews
8.2Boarding
7.9Comfort
7.3Food
7.9Entertainment
8.5Crew
Airline reviews

I am very bothered by the events today. I can't believe the flight attendants allowed someone to take my seat and made me move. It was embarrassing. I was in the right. The lady just didn't want move. I can't believe delta would allow this to stand and disrespect my rights as a passenger. The lady complained about her leg and that she couldn't move. Firstly somehow she was able to make it to row 24. Not sure how much her leg could have hurt. Secondly, I'm in plenty of pain myself. I just finished chemotherapy a several weeks ago. My body is constantly sore. Yet deltas flight attendants didn't appropriately protect my rights. In the end they found me a seat on the plane but I want to understand how delta can operate this way. They in essence allowed a bully to get their way.

2.0 MediocreNachi, May 2025LGA - MIA
Read more Delta reviews

I am very bothered by the events today. I can't believe the flight attendants allowed someone to take my seat and made me move. It was embarrassing. I was in the right. The lady just didn't want move. I can't believe delta would allow this to stand and disrespect my rights as a passenger. The lady complained about her leg and that she couldn't move. Firstly somehow she was able to make it to row 24. Not sure how much her leg could have hurt. Secondly, I'm in plenty of pain myself. I just finished chemotherapy a several weeks ago. My body is constantly sore. Yet deltas flight attendants didn't appropriately protect my rights. In the end they found me a seat on the plane but I want to understand how delta can operate this way. They in essence allowed a bully to get their way.

Crew was friendly Love the entertainment in the seat head rest.

Delayed take-off. Very small plane so very scary with lots of bumps during the flight. Would never fly Delta on short flights in small 80 seaters plane again! Felt relieved when landed.

Other then mechanical/ computer problem and 3.5 hours flight delay the flight was great. I guess that what happened when you fly an old airplane now a day.

Inexpensive, got an exit row aisle aeat with no middle passenger, bought a great breakfast sandwich, flight comfortable & arrived ahead of schedule.

This was a code share Latam Airlines flight - everything very good except there was no seatback entertainment

Don't waste your money or points on first class. Delta first class is a joke. The seats were rickety, the food was awful, and nothing worked, wifi, my light, the power plug - and it was dirty - the fold out table was gross. For 2-3 hours, tough it out in Economy.

Loyal Delta traveler, but last nights flight was a train wreck. Seated in 1B after multiple delays. Then we couldn’t takeoff because of an issue with the passenger that was ‘not in compliance’ and had to deplane along with the threat if they did not deplane, all the passengers would be required to do so. Finally they were escorted off, but the experience threw off the crew. Disruptive for everyone. Service was a mess, televisions didn’t work, bathroom door kept swinging open during the entire flight whenever empty …

My flight was cancelled twice and the third time I tried to rebook it online I cancelled the flight because it looked like I would get a refund to my credit card. Instead I now have a credit. I was also on hold for three hours waiting for a representative and then disconnected. I will never fly delta again.

Awful. Flight was continuously getting delayed and gates kept changing without any reason. Flight was delayed for more then 3 hours

Smooth flight, especially take off and landing, and great crew on board. Really loved the stroopwaffles!

I fly UAL 7-8 times per year. This flight was not up to snuff because it boarded very late "due to unexpected delays in restocking the plane" and yet Flight Aware showed the plane had landed some 10 hours earlier--so I think they could have planned accordingly. The FA's were nice but harried. The video system had to be rebooted 3-4 times. The food service was rather abrupt; they forgot my row and when I asked for my meal, they brought it with some impatience. Overall, the flight was fine, but the little details made it feel somewhat mundane and hurried.

Stewardess spilled orange juice on my clothes/seat no help no apology just threw napkins at me to clean the mess up. Not Happy.

I didn’t get on plane. Passport being processed by consulate with visa application. Tried to cancel through underpricer after purchasing cacelling for any reason. No dice, they are thieves.

When I booked it on Kayak it aaid that I wasn't allowed hamd luggage. I called United Airlines and it took them 6 minutes to figure out if I was allowed free hand luggage. Surely something that simple they should be able to tell me instantly.

We were delayed in Toronto on the tarmac for THREE hours with no clear indication as to why except that it was not a safety hazard. Pilot did apologize more than once but even he was unable to explain why exactly we were delayed. I overheard the stewards saying that the captain was very frustrated with the situation as well because he was not able to explain why except it had something to do with water supply or system on the aircraft and now we needed to wait for an engineer to approve the aircraft for flight. It was very frustrating and distressing as a passenger and we should have been given complimentary meals at the very least.

Flight was cramped with every seat taken. The food was fine, nothing crazy to write home about. The plane felt dated and needing some TLC, the button for the window shade didn't work and there were no AC outlets to use. When communicating with staff all except one nice lady never seemed happy to help me almost like I was bothering them when asked for things like a glass of water or a snack. The flight was overall fine. It did what was needed which is get me from point A to point B. But it certainly was not special. I don't expect much in economy but I believe economy on a host of other airlines is more memorable and better experience.

The flight was heavily booked so boarding was a lengthy process. The FA’s were rather abrupt during this process but became more gracious as the flight went on. Breakfast (puffed pastry and chewy sausage) was pretty horrible but there was fruit and yogurt which they didn’t mess up. Overall it was fine.

The tv monitor in front of my seat was not responding. The flight crew reset it and it still didn’t work.

Liked nothing. As per previous segment it was delay delay delay.

During service there was a garbage/beverage spill near our seats that never was cleaned up. On a relatively short flight when we’re fortunate enough to actually have in flight movies available, the flight attendants pitching the AADVANTAGE credit card shouldn’t talk for the last 10 minutes of the flight so that we miss the end of the movie.

Waited on the runway for takeoff for 2.5 hours. Air traffic rerouted us. The plane didn't have enough fuel, so had to go back to the gate. Had to wait for a new pilot. Should have landed at 5:22. Didn't land until 9:10. Trash flight.

The boarding was pretty easy. However, the first class seats are not lay flat as other airlines (like JetBlue) has and therefore sleeping was a challenge.

Pitch was very small. Knees were on the seat back in front of me.

Everything about the flight was lovely…We left early, arrived early, cabin crew were efficient and helpful. Flight was easy and most pleasant.

Would have thought that they would gas up plane before everyone got on board

Wonderful as usual except for other guests that were unruly and not kept in check by the Crew.

The flight was initially delayed, then cancelled. American Airlines says the cancellation was weather related, though the actual weather was not bad in both Washington and Providence and between. There were very few cancellations that day. In fact, AA2120 from Washington, DC to Boston flew with a minor delay at about the same time. So, the weather somehow affected only this particular flight AA5230. The next available flight was the following morning. The American Airlines refused to reimburse accommodation (hotel at DCA)

Fine. On time, cabin service was fine, bag arrived. All good. Flying into DCA so did not collide with any helicopters, which is also good. Horrid incident that could have and should have been prevented.

Good experience but the snacks are not gluten free, so I cannot eat them.

Everything you need to know for your flight from Dulles Intl to Key West

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