IAD - EYW

$104 Find Cheap Flights from Washington Dulles Airport to Key West - Compare and Save

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 11/22. 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

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Everything you should know

Cheapest round-trip
$219
Typical prices: $233-$570
Multiple Airlines
Thu 8/20Wed 8/26
IAD - EYW • 1 stop
Cheapest non-stop
$299
United Airlines
Fri 1/8Mon 1/11
IAD - EYW • Non-stop
When to travel
Cheapest • 35% price drop
Most popular
Good to know
Good to know
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Booking Insights
Expert advice
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

Thu, Aug 20 - Wed, Aug 26
Multiple Airlines Logo
4:52 pm - 11:27 am
IAD
-
EYW
18h 35m
1 stop
Multiple Airlines Logo
11:46 am - 5:14 pm
EYW
-
IAD
29h 28m
2 stops
$219Multiple Airlines
Sun, Nov 1 - Wed, Nov 18
Multiple Airlines Logo
8:16 am - 10:19 am
IAD
-
EYW
26h 03m
1 stop
Multiple Airlines Logo
10:04 am - 12:28 am
EYW
-
IAD
14h 24m
2 stops
$220Multiple Airlines
Sat, Aug 29 - Mon, Aug 31
Multiple Airlines Logo
4:52 pm - 11:35 am
IAD
-
EYW
18h 43m
1 stop
Multiple Airlines Logo
12:07 pm - 10:52 pm
EYW
-
IAD
10h 45m
2 stops
$224Multiple Airlines
Fri, Jan 8 - Mon, Jan 11
United Airlines Logo
1:00 pm - 4:22 pm
IAD
-
EYW
3h 22mnonstop
United Airlines Logo
6:20 pm - 9:09 pm
EYW
-
IAD
2h 49mnonstop
$299United Airlines
Mon, Dec 14 - Mon, Dec 21
United Airlines Logo
6:00 am - 1:02 pm
IAD
-
EYW
7h 02m
1 stop
United Airlines Logo
1:30 pm - 4:12 pm
EYW
-
IAD
2h 42mnonstop
$309United Airlines
Wed, Dec 16 - Sun, Dec 20
United Airlines Logo
6:00 am - 1:02 pm
IAD
-
EYW
7h 02m
1 stop
United Airlines Logo
1:30 pm - 4:12 pm
EYW
-
IAD
2h 42mnonstop
$309United Airlines
Sun, Oct 4 - Fri, Oct 16
Delta Logo
12:26 pm - 5:23 pm
IAD
-
EYW
4h 57m
1 stop
Delta Logo
7:40 am - 2:08 pm
EYW
-
IAD
6h 28m
1 stop
$333Delta
Tue, Nov 3 - Wed, Nov 18
Delta Logo
6:00 am - 10:47 am
IAD
-
EYW
4h 47m
1 stop
Delta Logo
7:35 am - 2:05 pm
EYW
-
IAD
6h 30m
1 stop
$333Delta
Wed, Jan 6 - Sat, Jan 9
American Airlines Logo
6:00 am - 12:42 pm
IAD
-
EYW
6h 42m
1 stop
American Airlines Logo
4:04 pm - 11:12 pm
EYW
-
IAD
7h 08m
1 stop
$413American Airlines
Sat, Aug 29 - Sat, Sep 5
American Airlines Logo
10:27 am - 4:18 pm
IAD
-
EYW
5h 51m
1 stop
American Airlines Logo
4:45 pm - 9:53 pm
EYW
-
IAD
5h 08m
1 stop
$413American Airlines
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’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 Thursday, and avoid Wednesdays 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 $308 (return) on average. On the other hand, the most expensive months are October and May, where the average cost of round-trip tickets is $608 and $550 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 $447 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 1 week before departure. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Expert advice

Expert advice for your flight from Dulles Intl to Key West

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Paul Rubio

Paul Rubio

Expert on EYW

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.

Stefanie Waldek

Stefanie Waldek

Expert on IAD

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.

Good to know

Low season

August

Cheapest flight

$104
Best time to beat the crowds with an average 36% drop in price.
Most popular time to fly and prices are also 5% 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 5 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Key West was $104 for a one-way ticket and $219 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 $553 and an overall rating of 7.8, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $468 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 $414 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.
7.8
DeltaOverall score based on 8493 reviews
8.1Boarding
7.8Entertainment
7.2Food
7.8Comfort
8.5Crew
Airline reviews

Flight was delayed for about an hour but overall good experience

8.0 ExcellentNana, Jul 2026
DCA - ATL
Read more Delta reviews

Flight was delayed for about an hour but overall good experience

The gentleman at the gate I think his name is RIE was exceptional

This flight was no comparison to our prior flight. I'm thinking it all has to do with the age of the aircraft.

2 of the seats in row 31 the entertainment system was not working, and one seat the tray table did not go all the way down. Flight arrived early and departed on time which was great.

Waited at the usual crowded gate at DCA where one ends up standing up because there aren't enough seats.

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.

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.

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

I would fly again the whole experience was great. The only feed back I can give that they don't do that American Airlines does is the crew there is more humorous with boarding and thank their passengers. It makes it more fun to fly with them. I would however fly Delta again.

I wouldn't say I liked being forced to check my small roller bag at the gate; too many people had bags and were in a higher boarding group.

My flight was delayed so bad i missed u it so i just said never mind

Delayed 2 hours while stuck on the aircraft. If the luggage was properly loaded the first time we probably wouldn’t have been delayed at all

Onboard staff was courteous, helpful, responsive and friendly. The boarding process was disorganized, poorly communicated, and disheveled. Gate agents were yelling instead of using the PA system, didn’t communicate the timing delay of our flight, and created an atmosphere of chaos rather than order and communication. As far as I know, there was no reason for their. I would hate to see how it operated under extreme conditions. I’ve never seen United Airlines operations in such a state.

The flight did not have its customary snacks during the flight. Apparently they were never loaded on the plane.

Like: departed and arrived on time. Unlike: Food options for purchase allways bad, 1 of 2 of the crew members not very friendly at all. Seats and leg room aweful. At this point I am thinking on switching to AA.

United didn’t even try to hold the flight for me. They knew I had a tight connection and when I arrived at the gate less than 10 mins after final boarding the flight had already gone. The gate agent wasn’t even notified that I was on my way. She was told I wasn’t at the airport

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

The flying experience was great. The flight was on time with no boarding issues during a peak travel period. The short cut baggage drop and process was not smooth and efficient at Dulles.

The crew were really great, but the 4 hour delay in small chunks was the worst.

Wasn’t very crowded. Seamless processes. No issues traveling with two little kids.

Delayed boarding because a flight attendant couldn't find the gate...sat on the plane for over an hour at the gate because AA couldn't get one of the planes behind us to move

As always, most AA flights that we fly are almost ALWAYS delayed and that too multiple times. Very frustrating

The small flights with Valet Luggage has a poor service

Human interaction. Thought there would be more service-even a smile would have been nice.

Incoming flight was delayed, delaying boarding. It then took 30 mins to take off. Took 20 mins to get to a gate because they changed the gate last minute, crew weren’t ready so there was no one staffed to work the jet bridge. Boarding was so disorganized as is usual with American because everyone just stands around the gate regardless of boarding group.

Flight delay for mechanical. Inbound arrived on time. No one said why mechanical delay.

Flight boarded, departed and landed on time. Excellent service from flight attendant in FIRST

It was a little concerning to hear the ground crew arguing with the flight crew over baggage space. Instead of taking them and checking them, they started checking for space in the first class cabin moving items around like the flight crew didn't know what they were doing. I was embarrassed for them.

I got sick nothing contagious but distressing and the care I received by Kayla? Keighly the flight attendant will be memorable for ever. Thank You

We sat on the plane for 1 hour because the airline was short handed could not be unloading.

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

Information on your arrival and departure airports