EYW - IAD

$129 Find Cheap Flights from Key West to Washington Dulles Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Key West to Dulles Intl departing on 4/29. 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 Washington, D.C. Dulles Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Key West to Washington, D.C., 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 Key West to Washington, D.C., as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$183
Allegiant Air
Do 4/16So 4/19
EYW - IAD • 1 stop
Cheapest non-stop
$289
United Airlines
Do 4/16So 4/19
EYW - IAD • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Arrive two hours early at Key West for security.
Use the Silver Line Metro from Dulles to downtown D.C.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Cheapest • from $183 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Every day
You can fly direct with United Airlines. Average duration is 3h 03m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top layover airports
Cheapest • Avg $248 (round-trip)
Shortest trip • 4h 54m (one-way)
Insights
Insights
Insights
Insights
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 Dulles Intl!
Flight Deals
Booking Insights
Expert advice
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Key West to Dulles Intl 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 Key West to Dulles Intl

Do, Apr 16 - So, Apr 19
Allegiant Air Logo
9:58 am - 8:59 am
EYW
-
IAD
23h 01m
1 stop
Allegiant Air Logo
2:01 pm - 10:11 am
IAD
-
EYW
20h 10m
1 stop
$183Allegiant Air
Do, Apr 16 - So, Apr 19
Allegiant Air Logo
2:04 pm - 8:59 am
EYW
-
IAD
18h 55m
2 stops
Allegiant Air Logo
2:01 pm - 10:11 am
IAD
-
EYW
20h 10m
1 stop
$213Allegiant Air
Mi, Apr 1 - So, Apr 5
Multiple Airlines Logo
11:51 am - 7:47 am
EYW
-
IAD
19h 56m
1 stop
Multiple Airlines Logo
12:56 pm - 10:11 am
IAD
-
EYW
21h 15m
1 stop
$251Multiple Airlines
Do, Apr 2 - Mo, Apr 6
Multiple Airlines Logo
2:42 pm - 2:13 pm
EYW
-
IAD
23h 31m
1 stop
Multiple Airlines Logo
8:30 pm - 11:30 am
IAD
-
EYW
39h 00m
2 stops
$268Multiple Airlines
Do, Apr 16 - So, Apr 19
United Airlines Logo
6:22 pm - 9:25 pm
EYW
-
IAD
3h 03mnonstop
United Airlines Logo
1:15 pm - 4:42 pm
IAD
-
EYW
3h 27mnonstop
$289United Airlines
Do, Apr 16 - So, Apr 19
United Airlines Logo
6:22 pm - 9:25 pm
EYW
-
IAD
3h 03mnonstop
United Airlines Logo
6:00 am - 1:31 pm
IAD
-
EYW
7h 31m
1 stop
$299United Airlines
Do, Apr 2 - Mo, Apr 6
Multiple Airlines Logo
2:42 pm - 2:13 pm
EYW
-
IAD
23h 31m
1 stop
Multiple Airlines Logo
8:34 am - 12:21 pm
IAD
-
EYW
27h 47m
1 stop
$300Multiple Airlines
Fr, Mai 1 - So, Mai 3
American Airlines Logo
4:20 pm - 11:59 pm
EYW
-
IAD
7h 39m
1 stop
American Airlines Logo
6:25 am - 11:16 am
IAD
-
EYW
4h 51m
1 stop
$309American Airlines
Fr, Apr 17 - Mo, Apr 20
United Airlines Logo
5:23 pm - 11:25 pm
EYW
-
IAD
6h 02m
1 stop
United Airlines Logo
1:15 pm - 4:42 pm
IAD
-
EYW
3h 27mnonstop
$323United Airlines
Mi, Apr 8 - Di, Apr 14
American Airlines Logo
2:01 pm - 7:25 pm
EYW
-
IAD
5h 24m
1 stop
American Airlines Logo
10:32 am - 4:35 pm
IAD
-
EYW
6h 03m
1 stop
$364American Airlines
Booking Insights

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

Get data-powered insights and trends into flights from Key West to Dulles Intl 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 Key West to Washington Dulles Airport?

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

If your flying dates are flexible, you should consider flying to Washington Dulles Airport on a Thursday, as we generally find the cheapest rates on that day for this route. On the other hand, Wednesday is the most expensive day to fly from Key West to Washington Dulles Airport. For your return ticket, we recommend flying on a Tuesday and avoiding Mondays for the best deals.

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

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 $565 on average.

Expert advice

Expert advice for your flight from Key West to Dulles Intl

 
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 seasonSeptember
Cheapest flight$123
Best time to beat the crowds with an average 45% drop in price.
Most popular time to fly and prices are also 40% lower on average.
Flight from Key West to Washington Dulles Airport

When to book flights from Key West to Dulles Intl

Are your dates flexible? Find out the best times to travel from Key West to Dulles Intl 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 Key West to Washington Dulles Airport flights

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

    In the last 3 days, the lowest price for a flight from Key West to Washington, D.C. Dulles Intl Airport was $124 for a one-way ticket and $183 for a round-trip.

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

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Key West to Washington Dulles Airport?

    On your way to Washington Dulles Airport, you’ll fly out from Key West. You’ll be landing at Washington, D.C. Dulles Intl.

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

    Only American Airlines offers inflight Wi-Fi service on the Key West to Washington Dulles Airport flight route.

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

    The Embraer 175 (Enhanced Winglets) is the aircraft model that flies most regularly on the Key West to Washington Dulles Airport flight route.

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

    SkyTeam is the only airline alliance operating flights between Key West and Washington Dulles Airport.

  • On which days can I fly direct from Key West to Washington Dulles Airport?

    There are nonstop flights from Key West to Washington Dulles Airport on a daily basis.

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

    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 Key West to Washington Dulles Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington Dulles Airport from Key West 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 Key West to Washington Dulles Airport?

    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 Washington Dulles Airport with an airline and back to Key West with another airline. Booking your flights between Key West and IAD 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 Key West to Washington Dulles Airport?

    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 Washington Dulles Airport from Key West 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 Key West to Washington, D.C. Dulles Intl Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $371 or less one-way.

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

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

Direct departures

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

Direct returns

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

Reviews of the top airline flying from Key West to Dulles Intl

 
See real verified KAYAK customer reviews for airlines flying from Key West to Washington, D.C.. 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 Key West to Dulles Intl? 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 8314 reviews
8.5Crew
7.8Entertainment
8.1Boarding
7.2Food
7.9Comfort
Airline reviews

Perhaps when you’re sitting in 1st class and the crew closes the bathroom for the pilots, there could be a notification other than holding your hands up as a blockade when you get there and you’re told the restrooms are closed please turn around … especially at night when visibility is poor and you’re met by a flight attendants with their arms up

10.0 ExcellentDebra, Mar 2026
PBI - ATL
Read more Delta reviews

Perhaps when you’re sitting in 1st class and the crew closes the bathroom for the pilots, there could be a notification other than holding your hands up as a blockade when you get there and you’re told the restrooms are closed please turn around … especially at night when visibility is poor and you’re met by a flight attendants with their arms up

Loved flying First Class. Very comfortable. The seat was amazing. Enjoyed a movie and was able to relax so much better than in coach.

We landed and sat on the tarmac for 45 minutes because they only have one gate at the airport and there was another plane running late so we had to wait

Flight was warm for first few hours and quite rough

An awesome flight crew. FC seat cushion just doesn’t cut it for a 3+ hour flight.

Delta continues to set the benchmark for traveler-friendly service with minimal disruption and clear communication within the mainland US (coast to coast). I am consistently pleased to be a Delta customer, and this experience once again met my expectations. There was a brief delay departing from MIA due to a technical issue that required the aircraft to return to the gate. However, the situation was handled professionally and transparently. Fortunately, my planned layover allowed ample buffer time, so the adjustment caused no stress. Overall, another smooth and reassuring experience.

Totally worth the miles to upgrade to Delta Comfort. Plenty of legroom.

This was my first time flying Delta ever and I had a great experience!

The flight was great as well as the airline staff

Comfort seating was on the tight side. Maybe it was a smaller plane(?)

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

Information on your arrival and departure airports