IAD - EYW

$110 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 8/30. 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

Sat, Aug 30 - Wed, Sep 3
Delta Logo
3:26 pm - 8:12 pmIAD-EYW
4h 46m1 stop
Delta Logo
7:00 am - 2:31 pmEYW-IAD
7h 31m1 stop
$234Delta
Find Deal
Tue, Oct 14 - Fri, Oct 24
Delta Logo
3:33 pm - 8:06 pmIAD-EYW
4h 33m1 stop
Delta Logo
1:57 pm - 9:31 pmEYW-IAD
7h 34m1 stop
$249Delta
Find Deal
Wed, Aug 27 - Sat, Aug 30
Delta Logo
3:26 pm - 8:12 pmIAD-EYW
4h 46m1 stop
Delta Logo
6:20 pm - 11:21 pmEYW-IAD
5h 01m1 stop
$259Delta
Find Deal
Sun, Oct 26 - Thu, Nov 6
Delta Logo
6:00 am - 11:27 amIAD-EYW
5h 27m1 stop
Delta Logo
6:00 pm - 11:20 pmEYW-IAD
5h 20m1 stop
$264Delta
Find Deal
Fri, Oct 10 - Mon, Oct 13
 Logo
8:25 am - 7:55 pmIAD-EYW
11h 30m2 stops
 Logo
9:50 am - 8:46 pmEYW-IAD
10h 56m1 stop
Tue, Oct 28 - Wed, Nov 5
United Airlines Logo
6:00 am - 2:09 pmIAD-EYW
8h 09m1 stop
United Airlines Logo
3:05 pm - 8:57 pmEYW-IAD
5h 52m1 stop
$329United Airlines
Find Deal
Fri, Nov 7 - Fri, Nov 14
United Airlines Logo
6:00 am - 2:09 pmIAD-EYW
8h 09m1 stop
United Airlines Logo
3:05 pm - 8:57 pmEYW-IAD
5h 52m1 stop
$330United Airlines
Find Deal
Fri, Oct 31 - Mon, Nov 3
American Airlines Logo
8:09 am - 1:08 pmIAD-EYW
4h 59m1 stop
American Airlines Logo
6:33 pm - 11:07 pmEYW-IAD
4h 34m1 stop
$339American Airlines
Find Deal
Fri, Oct 31 - Wed, Nov 5
American Airlines Logo
8:09 am - 1:08 pmIAD-EYW
4h 59m1 stop
American Airlines Logo
1:45 pm - 11:07 pmEYW-IAD
9h 22m2 stops
$344American Airlines
Find Deal
Fri, Nov 14 - Sun, Nov 16
 Logo
12:50 pm - 9:01 amIAD-EYW
20h 11m3 stops
 Logo
8:36 pm - 6:37 pmEYW-IAD
22h 01m2 stops
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
Booking Insights

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 $388 (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 2 stops layover the cheapest option at $809 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, which saves you about 23% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

Good to know

Low seasonSeptember
Cheapest flight$110
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly with an average 1% increase in price.
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 $110 for a one-way ticket and $234 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 Embraer 175 (Enhanced Winglets) 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?

    SkyTeam, Star Alliance, 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 $476 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 $494 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.

KAYAK’s top tips for finding a cheap flight from Washington, D.C. Dulles Intl Airport to Key West

  • Looking for a cheap flight? 25% of our users found flights on this route for $522 or less round-trip.

Reviews of the 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 7980 reviews
7.3Food
7.9Entertainment
8.2Boarding
8.5Crew
7.9Comfort
Airline reviews

Always good but we must do something about people in rows ahead of you that don't put their seats back up when they are suppose to. And It's rough to not be able to even lean over to get something out of my purse.

10.0 ExcellentAnonymous, Jul 2025ATL - EYW
Read more Delta reviews

Always good but we must do something about people in rows ahead of you that don't put their seats back up when they are suppose to. And It's rough to not be able to even lean over to get something out of my purse.

this crew didn't care much. bumping carts into seats more times than i care to remember

Everything was fine except the entertainment was not working for half of the flight.

Easy boarding with an extremely kind attendant. Seats were spacious and we had 3 seats for 2 people so we could stretch out. Comfortable air flow and very attentive and hospital attendants. Bathrooms and food were the only negative. Bathrooms were so small you could hardly get in and close the door. I don’t think an obese person would fit or a person with a movement disability. Food was the trending food for flights, nonexistent. We spent $40 getting sandwich and snack at airport for our 6 hour flught.

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

Was on time until within 1 hour of flight-how does that happen? Staff very friendly.

I liked the choice of lemon ginger tea. I think stewardesses can be more considerate of older people needs.

I love flying with United. Unfortunately, I flew on an older plane with minimal upgraded technology (no Bluetooth functionality or handy charging ports). Otherwise, the flight was great and even arrived early.

They changed my seats after I checked in and I was stressed from the time I saw that information until just before boarding, when the gate attendant fixed it, but it shouldn't have happened. And if it couldn't be prevented, then the people on the phone I spoke with should have done something to help, which they did not, nor did they offer me compensation, just meaningless apologies.

We were given vouchers we couldn’t use with a 5.5 hour delay

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.

Flight delays numerous times. Everytime we would get close to boarding it would be delayed again. Strung along the entire time.

This flight never occurred because AA couldn’t get their act together.

They are still charging me after taking 466 and 833 for round trip from AR to to Bradley airport from 19 to 21. Then poor experience. Am hurt and I will say it on social media. Please stay away from this airline. I see in my bank account they are still taking 644. Am trying to stop it. I used to fly United airlines and I suggest that if you don't want extra charges and good service you go back there. American airlines delayed my flight again and I was late for my meeting, no recompensation but charging me over and over.

They changed our Gate 5 times, and concourse twice. Changed our seats twice.

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

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

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