IAD

$73 Find Cheap Flights from Florida Keys to Washington Dulles Airport - 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 to Dulles Intl departing on 8/19. 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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Cheap Flights from Florida Keys to Dulles Intl

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

Wed, Oct 28 - Fri, Oct 30
Frontier Logo
7:17 pm - 12:28 am
MIA
-
IAD
5h 11m
1 stop
Frontier Logo
7:00 am - 12:05 pm
IAD
-
MIA
5h 05m
1 stop
$128Frontier
Mon, Oct 19 - Mon, Oct 19
Frontier Logo
10:03 am - 5:36 pm
MIA
-
IAD
7h 33m
1 stop
Frontier Logo
9:16 pm - 8:58 am
IAD
-
MIA
11h 42m
1 stop
$158Frontier
Tue, Aug 25 - Wed, Aug 26
Frontier Logo
11:10 am - 5:14 pm
MIA
-
IAD
6h 04m
1 stop
Frontier Logo
6:20 am - 1:32 pm
IAD
-
MIA
7h 12m
1 stop
$158Frontier
Thu, Sep 3 - Tue, Sep 8
Frontier Logo
8:10 am - 5:14 pm
MIA
-
IAD
9h 04m
1 stop
Frontier Logo
6:20 am - 4:21 pm
IAD
-
MIA
10h 01m
1 stop
$158Frontier
Tue, Sep 1 - Sat, Sep 5
United Airlines Logo
1:44 pm - 4:17 pm
MIA
-
IAD
2h 33mnonstop
United Airlines Logo
8:16 am - 11:11 am
IAD
-
MIA
2h 55mnonstop
$199United Airlines
Wed, Aug 26 - Wed, Sep 2
United Airlines Logo
1:44 pm - 4:17 pm
MIA
-
IAD
2h 33mnonstop
United Airlines Logo
8:16 am - 11:11 am
IAD
-
MIA
2h 55mnonstop
$199United Airlines
Wed, Sep 2 - Wed, Sep 9
United Airlines Logo
1:44 pm - 4:17 pm
MIA
-
IAD
2h 33mnonstop
United Airlines Logo
8:16 am - 11:11 am
IAD
-
MIA
2h 55mnonstop
$199United Airlines
Thu, Sep 3 - Sat, Sep 5
Multiple Airlines Logo
11:04 am - 10:52 pm
EYW
-
IAD
11h 48m
2 stops
Multiple Airlines Logo
4:52 pm - 11:25 am
IAD
-
EYW
18h 33m
1 stop
$218Multiple Airlines
Wed, Aug 26 - Wed, Sep 2
Delta Logo
10:35 am - 4:42 pm
MIA
-
IAD
6h 07m
1 stop
Delta Logo
6:00 am - 1:00 pm
IAD
-
MIA
7h 00m
1 stop
$219Delta
Tue, Sep 15 - Tue, Sep 22
Delta Logo
11:29 am - 5:46 pm
MIA
-
IAD
6h 17m
1 stop
Delta Logo
8:08 am - 1:05 pm
IAD
-
MIA
4h 57m
1 stop
$219Delta
Useful Info

Good to know

Low season

January

Cheapest flight

$73
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly and prices are also 13% lower on average.
Flight from Miami to Washington Dulles Airport

FAQs for booking Florida Keys to Washington Dulles Airport flights

  • How does KAYAK find such low prices on flights from Florida Keys 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 Florida Keys to Washington Dulles Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Florida Keys 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 Florida Keys 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 Florida Keys 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 Florida Keys with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Florida Keys 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 Florida Keys up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Florida Keys to Dulles Intl

 
Need help choosing which airline to fly with from Florida Keys 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.
7.4
United AirlinesOverall score based on 10063 reviews
7.7Boarding
8.1Crew
7.1Entertainment
6.7Food
7.3Comfort
Airline reviews

Our flight was great with an unexpected upgrade. However, four days into our travel we are still without a piece of luggage. The bag tracker has not been accurate, the airline is not communicating with me or the luggage delivery service and no one is willing to take responsibility or guarantee any kind of support or reimbursement. Unfortunately, we do not have the option to easily shop to replace items as we are currently on a cruise. I have been very disappointed by United Airlines response.

6.0 GoodValerie, Jul 2026
STL - IAD
Read more United Airlines reviews

Our flight was great with an unexpected upgrade. However, four days into our travel we are still without a piece of luggage. The bag tracker has not been accurate, the airline is not communicating with me or the luggage delivery service and no one is willing to take responsibility or guarantee any kind of support or reimbursement. Unfortunately, we do not have the option to easily shop to replace items as we are currently on a cruise. I have been very disappointed by United Airlines response.

It was terribly delayed with zero support from united airlines. I reached at 1 am in the night. They did not provide any option to change the flights.

Flight was delayed 14 hours due to DC air show and weather. Missed connection to MUC.

Horrible I am at almost 2,000,000 miles on United. This was probably the worst flight ever. An hour and a half before takeoff I get a message that they’re changing the plane and I no longer have a seat in Polaris business Supposedly, there was a problem with the plane, but then there was no other plane Finally, they decided to bring a plane from Newark to Washington Dulles Of course the original flight was at 10:45 PM so by the time the plane got there it was 12:30 AM. It had not been cleaned. It had not been catered. They don’t really have people available to do those things when it’s not pre-programmed at 1 o’clock in the morning. The crew had to be changed And the new plane held 28 fewer people than the scheduled plane There is no way you can hate United Airlines enough The people at the gate were actually just fine, but it was management who was completely useless And did they send extra help to the people at the gate? Did they send supervisors? Of course not. Just don’t take United find somebody else or buy a boat

It's a short hop. My carryon was checked at the gate, I didn't have to drag it all over the airport. Excellent wheelchair assist.

United is one airline which regardless of how many separate United tickets in existence, if one flight breaks down, the airline will take care of all the flights.

It is clear that someone knew, and competent, is in charge of food at United Airlines at least for the international flights. I was flying in coach, but the choices of the dinner were excellent. Tasty, and appropriate size. I had the beef, which was a little bit like a shepherds pie, and it was good. Nothing comparable has been served on a United flight in years. It will not be confused with three star food, but it is very good for airline food. Even better was the breakfast choice between a cinnamon roll and a breakfast sandwich. I chose the breakfast sandwich which was absolutely delicious and which I would happily order again at my local Starbucks or Panera. It is clear that someone knew indifferent is in charge of the food and it’s about time.

Flight was delayed in the gate by 5 hours and ultimately cancelled- rebooking service by United agents was terrible

Crowded flight, but upbeat and kind crew. Pilot greeted us at door, flight attendant thanked a number of “special” passengers for their business, another addressed an eight-year old boy as “young man.” United obviously trying to up their game, but though all of that is nice and notable, flying still feels like moving along a human assembly line, being herded into one small space after another (boarding areas with too few seats, planes with limited personal space, shuttles (IAD) packed too full.

Good flight, comfortable seats and very quick passage through Heathrow. Boarding in Washington was cramped and not well organized, but the rest was perfect.

Frontier feels like a family I Worked for Eastern Airlines back in the day and I felt the family vibe that I had then. Thank you

Crew was kind of grumpy and there was no beverage service at all. Sodas were $4. Disappointing.

It was an early flight and most people napped/slept and the crew let us which was nice.

There's no seats that lean back with little leg space i wad uncomfortable the entire flight. Your charges for extra baggage is despicable and costly!!

There was no food and no entertainment, so I'm not sure why these are even in the survey, as my understanding is frontier does not ever offer food without a few, not even a snack, and there are no screens so unless the flight safety talk is our entertainment why ask how we liked it?. One of the flight attendants say in the back of the plane as people filed in to their seats, yelling orders about where to put baggage and telling people to hurry up. It was the least professional experience I've ever had on a flight.

It didn’t happen. I booked it and then was told it wasn’t available and then forced to pay far higher prices for a worse option

This company socks. It's fraud. They canceled our flight yesterday, and today we were late because of a really long line at the check in bag. At the rebook station, there was ton of people. The workers were all rude. I am gonna make a report to FTC.

Flight got delayed for 5 hours no good explanation was offered ;(

There was no one at the counter to assist with our check in. The app didn’t work, so I arrived at the airport with time to check in and I couldn’t because no employees were there. When I finally got someone on the phone, it was inside the 60min rule and they said I could no longer check in and they could sell me another ticket. We had to scramble and pay an additional $800 for tickets and THEN AFTER (about 60 min from my original convo with customer service and 10min after original departure time) I had boarded my new flight, there was email saying my original flight from Frontier was delayed and leaving 2hr 50min later, but I STILL wouldn’t have been able to check in. Which means customer service should have been able to see it and let me check in because I was well within my check in time. When I call Frontier, they hang up on me. So their app didn’t work and they employees left and they take zero responsibility or assistance with their “customer service”

The worst. We never made our connection and they did absolutely nothing to help us at the airport.

Traveling to a place near Dulles Intl?

Book flights to Dulles Intl if you plan to visit one of these locations
Winchester
Linthicum Heights
Hanover
Springfield
Gaithersburg
Towson
Martinsburg
Oxon Hill
Owings Mills
Charles Town
Greenbelt
Glen Burnie
Edgewood
Camp Springs
Ellicott City
Chesapeake Beach
Pikesville
Colonial Beach
Hunt Valley
Lutherville Timonium

Everything you need to know for your flight to Dulles Intl

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