IAD - EYW

$102 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 12/7. 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, 0 bags

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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Flight 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

Sun, Dec 21 - Wed, Dec 24
Multiple Airlines Logo
4:38 pm - 9:17 amIAD-EYW
16h 39m1 stop
Multiple Airlines Logo
7:47 am - 8:46 amEYW-IAD
24h 59m1 stop
$286Multiple Airlines
Find Deal
Sun, Dec 21 - Mon, Dec 29
Multiple Airlines Logo
8:16 pm - 1:43 pmIAD-EYW
17h 27m1 stop
Multiple Airlines Logo
10:01 pm - 9:28 amEYW-IAD
11h 27m1 stop
$287Multiple Airlines
Find Deal
Thu, Jan 1 - Thu, Jan 8
Multiple Airlines Logo
9:41 am - 9:17 amIAD-EYW
23h 36m1 stop
Multiple Airlines Logo
3:46 pm - 2:18 pmEYW-IAD
22h 32m2 stops
$289Multiple Airlines
Find Deal
Sun, Dec 21 - Mon, Dec 29
Multiple Airlines Logo
8:16 pm - 1:43 pmIAD-EYW
17h 27m1 stop
Multiple Airlines Logo
2:30 pm - 9:20 amEYW-IAD
18h 50m2 stops
$292Multiple Airlines
Find Deal
Sat, Dec 27 - Wed, Dec 31
Multiple Airlines Logo
10:15 pm - 8:15 amIAD-EYW
10h 00m1 stop
Multiple Airlines Logo
7:47 am - 5:47 pmEYW-IAD
10h 00m2 stops
$294Multiple Airlines
Find Deal
Sat, Nov 15 - Tue, Nov 18
Delta Logo
12:36 pm - 7:53 pmIAD-EYW
7h 17m1 stop
Delta Logo
6:18 pm - 12:16 amEYW-IAD
5h 58m1 stop
$299Delta
Find Deal
Fri, Jan 2 - Wed, Jan 7
Delta Logo
4:17 pm - 8:58 pmIAD-EYW
4h 41m1 stop
Delta Logo
7:10 am - 1:59 pmEYW-IAD
6h 49m1 stop
$304Delta
Find Deal
Sat, Jan 3 - Thu, Jan 8
United Airlines Logo
1:06 pm - 4:29 pmIAD-EYW
3h 23mnonstop
United Airlines Logo
6:05 pm - 8:53 pmEYW-IAD
2h 48mnonstop
$309United Airlines
Find Deal
Wed, Jan 7 - Sun, Jan 11
United Airlines Logo
6:00 am - 1:03 pmIAD-EYW
7h 03m1 stop
United Airlines Logo
2:25 pm - 9:13 pmEYW-IAD
6h 48m1 stop
$313United Airlines
Find Deal
Thu, Jan 1 - Tue, Jan 6
American Airlines Logo
9:12 am - 7:39 pmIAD-EYW
10h 27m2 stops
American Airlines Logo
6:43 pm - 11:12 pmEYW-IAD
4h 29m1 stop
$369American Airlines
Find Deal

Everything you should know

Our travelers' advice
AI-generated summary based on content written by travel experts
For a smooth departure from IAD, use the AeroTrain.
Upon arrival at EYW, taxis and rideshares are available.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Delta
Cheapest • from $299 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
3 weeks
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 42% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
August
Cheapest • 30% price drop
March
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$286
Typical prices: $451-$814
Multiple Airlines
Sun 12/21Wed 12/24
IAD - EYW • 1 stop
Cheapest non-stop
$309
United Airlines
Sat 1/3Thu 1/8
IAD - EYW • Non-stop
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Key West!
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.

How much is a round-trip flight from Washington, D.C. Dulles Intl Airport to Key West?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Washington, D.C. Dulles Intl Airport to Key West departing in December.

What’s the cheapest day of the week to fly from Washington Dulles Airport to Key West?

The average price of all round-trip flights from Washington, D.C. Dulles Intl Airport to Key West clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Key West on a Tuesday and more expensive on a Monday. On your return trip to Washington Dulles Airport, you should consider flying back on a Wednesday, and avoid Fridays for better deals.

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 August, where tickets cost $343 (return) on average. On the other hand, the most expensive months are November and December, where the average cost of round-trip tickets is $671 and $592 respectively.

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 42% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 20 weeks before departure.

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

Good to know

Low seasonSeptember
Cheapest flight$102
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly and prices are also 11% 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 $102 for a one-way ticket and $286 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?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Washington Dulles Airport and Key West, with oneworld 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 $482 and an overall rating of 7.9, 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.

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 $709 or less round-trip.

Prefer to fly direct from Washington Dulles Airport to Key West?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Washington, D.C. Dulles Intl to Key West.
Find which airlines fly direct from Washington, D.C. Dulles Intl Airport to Key West Airport, which days they fly and book direct flights.

Direct departures

Washington, D.C. Dulles Intl to Key West

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Direct returns

Key West to Washington, D.C. Dulles Intl

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

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.
7.9
DeltaOverall score based on 7998 reviews
8.5Crew
8.2Boarding
7.3Food
7.9Entertainment
7.9Comfort
Airline reviews

The flight was an hour and a half late departing which was inconvenient

8.0 ExcellentDan, Oct 2025SLC - MCO
Read more Delta reviews

The flight was an hour and a half late departing which was inconvenient

The flight was great. The gate location was way to far away!!!

The flight attendant in first class was beyond rude and didn't care at all about her job. AND the gate agent was even worse than the flight attendant for rudeness. She was awful.

Movie selection was meh. Food was great. Crew as always great. I paid for premium because that’s the only way not to feel like a sardine. That’s how economy should be imo. Sadly passengers have to pay an extra $1000 to get what they should at base price but that’s all airlines. The airline industry in general treats passengers as cargo.

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.

Short flight but an "eager to help" crew made the journey more enjoyable!

During booking, I kept trying submitting my payment from the Mexican website and it didn't work. After I had the idea to change it to the Canadian website, it worked but I had to be charged the equivalent of 50 CAD more. I received the clear instruction that I would only be able to check-in at the airport and that it was impossible to select a seat 24 hours before departure, that I had to pay 144 CAD to do so, although not only was I able to check-in 24 hours before departure, but I could have selected my seats for free then. All in all, I almost threw $200 out the window due to misleading information. Besides, the app kept crashing, the information to get to the gate on the app was inaccurate, my gate was switched and I was only informed once in the air (luckily I had noticed the departure pannel), I was not addressed in my language beforehand and even if I tried I was immediately answered in English (which meant the crew understood but didn't want to answer accordingly), there was only one snack & beverage service on my medium haul flight and no beverage service on my short haul flight. To be fair, the planes were comfortable, the crew apart from the language issue was helpful, dynamic and engaging, the plane was clean and the directions were clear and direct. United has a lot of potential to be one of my favourite airlines, but the devil is in the details and a lot of them missed the target.

Better WiFi. I cannot understand that in 2025, United is so behind on a technology that is now a necessity and still painfully unreliable, slow and keeps disconnecting.

Great service on board. Boarding a bit slow due to process. Food was pretty average.

Very small cramped plane for an international flight. Everything else was good, but it was maybe the smallest comfort-wise I've ever been on for longer than 3-4 hours and the trip was 7.5

Flight was delayed 3 hours. No food and drink vouchers was provided. They offered a mini pretzel bag and water .

Staff was rude. Didn’t give water for 2 hours. Worst service

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.

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

The flight attendant, a black woman with curly hair who sat near Row 21, was wonderful and kind.

Delays to take off and to leave the plane after landing added a lot of time to this flight.

It was a red eye flight, so no meals were provided, but it was fine with snacks. The seats felt cramped and almost too narrow.

We didn't take off until an hour after we boarded.

Wish they had the seat-back video screens for watching movies or playing games.

Very good but wish they had the seat-back video screens for movies & games

It took way too long to diagnose and solve the problem of a broken crew member cabin seat. Though compensation for the volunteer who left the flight was very kind.

We fly American Airlines quite a bit. And we always fly business class when traveling internationally. We were a bit disappointed with the comfort of this particular plane as well as the entertainment options.

Flight was delayed not sure why no explanation given and no apologies either. Otherwise the flight was fine

The AA staff person who checked our bags was curt and almost rude. The FA also seemed unhappy doing her job. Overall it was like riding the school bus back in grade school.

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

Information on your arrival and departure airports

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