$37 Find Cheap Flights from Washington Dulles Airport to Florida Keys

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 Florida Keys departing on 5/30. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Florida Keys

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Florida Keys.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Florida Keys.
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 22% 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.

Flights Deals
Useful Info
Flights Deals

Best Florida Keys Flight Deals from Dulles Intl

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Miami
Miaminonstop$75
Key West
Key West1 stop$209
Miami
Miaminonstop$75
Key West
Key West1 stop$209

Cheap Flights from Dulles Intl to Florida Keys

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

Recent round-trip flight deals from Dulles Intl to Florida Keys

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Dulles Intl to Florida Keys.
Discover the best prices for you by selecting your travel dates on KAYAK.
Frontier Logo
3:38 pm - 6:26 pmIAD-MIA
2h 48mnonstop
Frontier Logo
3:37 pm - 6:17 pmMIA-IAD
2h 40mnonstop
$75Frontier
Find Deal
Thu, May 29 - Thu, Jun 5
Frontier Logo
3:43 pm - 6:31 pmIAD-MIA
2h 48mnonstop
Frontier Logo
12:17 pm - 2:58 pmMIA-IAD
2h 41mnonstop
$76Frontier
Find Deal
Tue, May 27 - Wed, May 28
United Airlines Logo
8:20 am - 11:11 amIAD-MIA
2h 51mnonstop
United Airlines Logo
1:29 pm - 4:10 pmMIA-IAD
2h 41mnonstop
$182United Airlines
Find Deal
Sun, May 18 - Wed, May 21
United Airlines Logo
8:20 am - 11:11 amIAD-MIA
2h 51mnonstop
United Airlines Logo
1:29 pm - 4:10 pmMIA-IAD
2h 41mnonstop
$187United Airlines
Find Deal
Tue, May 13 - Fri, May 16
Delta Logo
3:37 pm - 8:07 pmIAD-EYW
4h 30m1 stop
Delta Logo
6:25 pm - 11:35 pmEYW-IAD
5h 10m1 stop
$209Delta
Find Deal
Sun, May 25 - Wed, May 28
American Airlines Logo
8:14 pm - 12:29 amIAD-MIA
4h 15m1 stop
American Airlines Logo
6:18 am - 10:48 amMIA-IAD
4h 30m1 stop
$251American Airlines
Find Deal
Sat, Jun 14 - Sat, Jun 21
Delta Logo
3:00 pm - 7:44 pmIAD-EYW
4h 44m1 stop
Delta Logo
7:00 am - 1:57 pmEYW-IAD
6h 57m1 stop
$269Delta
Find Deal
Sat, Sep 13 - Wed, Sep 17
Allegiant Air Logo
8:13 pm - 7:55 pmIAD-EYW
23h 42m2 stops
Allegiant Air Logo
7:31 pm - 3:49 pmEYW-IAD
20h 18m1 stop
$294Allegiant Air
Find Deal
Thu, Oct 2 - Sun, Oct 5
American Airlines Logo
5:02 am - 12:10 pmIAD-EYW
7h 08m1 stop
American Airlines Logo
5:24 pm - 12:02 amEYW-IAD
6h 38m1 stop
$319American Airlines
Find Deal
Sun, May 25 - Wed, May 28
Allegiant Air Logo
2:40 pm - 3:27 pmIAD-EYW
24h 47m2 stops
Allegiant Air Logo
4:17 pm - 9:23 amEYW-IAD
17h 06m1 stop
$321Allegiant Air
Find Deal
Sat, Jun 21 - Thu, Jun 26
Useful Info

KAYAK's insights & trends for Dulles Intl to Florida Keys flights

Get data-powered insights and trends into flights from Dulles Intl to Florida Keys to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest Washington, D.C. Dulles Intl Airport to Florida Keys flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from Washington, D.C. Dulles Intl Airport to Florida Keys.

The cheapest ticket to Florida Keys from Washington, D.C. Dulles Intl Airport found in the last 72 hours was to Key West, at $443 round-trip. The most popular route is from Washington, D.C. Dulles Intl Airport (IAD) to Key West (EYW), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $443.

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

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 $962 on average.

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Florida Keys?

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 Florida Keys, 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 Florida Keys is September, when tickets cost $273 (return) on average. On the other hand, the most expensive months are December and April, when the average cost of round-trip tickets is $440 and $397 respectively.

What’s the cheapest day of the week to fly from Washington Dulles Airport to Florida Keys?

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

When flying from Washington Dulles Airport to Florida Keys, you should consider leaving on a Tuesday and avoid Fridays if you are looking for the best rates. For your return to Washington Dulles Airport, you’ll find the best rates on Fridays and the most expensive ones on Mondays.

How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport to Florida Keys?

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 Florida Keys, 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 Florida Keys, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 14 weeks before departure.


Good to know

Low seasonOctober
High seasonApril
Cheapest flight$37
Best time to beat the crowds but there is an average 3% increase in price.
Most popular time to fly with an average 8% increase in price.
Flight from Washington Dulles Airport to Miami

FAQs - booking Florida Keys flights

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

    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 Florida Keys.

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

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

    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 from Washington Dulles Airport to Florida Keys with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Florida Keys?

    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 from Washington Dulles Airport to Florida Keys up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Florida Keys?

    The cheapest time of day to fly to Florida Keys is generally in the afternoon, when round-trip flights cost $261 on average. Morning departures are around 21% more expensive than evening flights, on average. The most expensive time of day to fly to Florida Keys is generally in the morning, which is peak travel time and where the average cost of a ticket is $361.

Top 5 airlines serving from Dulles Intl to Florida Keys

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Florida Keys. 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 Florida Keys? 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 7934 reviews
7.9Entertainment
7.3Food
8.5Crew
7.9Comfort
8.2Boarding
Airline reviews

Crew was friendly Love the entertainment in the seat head rest.

10.0 ExcellentRenee, Apr 2025DTW - MCO
Read more Delta reviews

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

Don't waste your money or points on first class. Delta first class is a joke. The seats were rickety, the food was awful, and nothing worked, wifi, my light, the power plug - and it was dirty - the fold out table was gross. For 2-3 hours, tough it out in Economy.

Loyal Delta traveler, but last nights flight was a train wreck. Seated in 1B after multiple delays. Then we couldn’t takeoff because of an issue with the passenger that was ‘not in compliance’ and had to deplane along with the threat if they did not deplane, all the passengers would be required to do so. Finally they were escorted off, but the experience threw off the crew. Disruptive for everyone. Service was a mess, televisions didn’t work, bathroom door kept swinging open during the entire flight whenever empty …

My flight was cancelled twice and the third time I tried to rebook it online I cancelled the flight because it looked like I would get a refund to my credit card. Instead I now have a credit. I was also on hold for three hours waiting for a representative and then disconnected. I will never fly delta again.

Awful. Flight was continuously getting delayed and gates kept changing without any reason. Flight was delayed for more then 3 hours

5-hour delay due to storms in Tanoa and airspace restricted by Miami traffic controllers.

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.

We were delayed in Toronto on the tarmac for THREE hours with no clear indication as to why except that it was not a safety hazard. Pilot did apologize more than once but even he was unable to explain why exactly we were delayed. I overheard the stewards saying that the captain was very frustrated with the situation as well because he was not able to explain why except it had something to do with water supply or system on the aircraft and now we needed to wait for an engineer to approve the aircraft for flight. It was very frustrating and distressing as a passenger and we should have been given complimentary meals at the very least.

Flight was cramped with every seat taken. The food was fine, nothing crazy to write home about. The plane felt dated and needing some TLC, the button for the window shade didn't work and there were no AC outlets to use. When communicating with staff all except one nice lady never seemed happy to help me almost like I was bothering them when asked for things like a glass of water or a snack. The flight was overall fine. It did what was needed which is get me from point A to point B. But it certainly was not special. I don't expect much in economy but I believe economy on a host of other airlines is more memorable and better experience.

The flight was heavily booked so boarding was a lengthy process. The FA’s were rather abrupt during this process but became more gracious as the flight went on. Breakfast (puffed pastry and chewy sausage) was pretty horrible but there was fruit and yogurt which they didn’t mess up. Overall it was fine.

The tv monitor in front of my seat was not responding. The flight crew reset it and it still didn’t work.

Liked nothing. As per previous segment it was delay delay delay.

Our seats were all the way in back of the plane,

Maybe add a seat trade app for flyers that didn’t get seats together

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

Wonderful as usual except for other guests that were unruly and not kept in check by the Crew.

The flight was initially delayed, then cancelled. American Airlines says the cancellation was weather related, though the actual weather was not bad in both Washington and Providence and between. There were very few cancellations that day. In fact, AA2120 from Washington, DC to Boston flew with a minor delay at about the same time. So, the weather somehow affected only this particular flight AA5230. The next available flight was the following morning. The American Airlines refused to reimburse accommodation (hotel at DCA)

Fine. On time, cabin service was fine, bag arrived. All good. Flying into DCA so did not collide with any helicopters, which is also good. Horrid incident that could have and should have been prevented.

Good experience but the snacks are not gluten free, so I cannot eat them.

Standard. No different than a discount carrier on a short trip.

Everything was great. Boarding, early departure, early arrival, and deplaning were smooth. Smooth flight.

I blame kayak for my last trip to dca. Kayak cancelled my direct flight and put on a one stop flight and made lost whole day from my vacation and had not even refunded my ticket.

The flights were terribly delayed and then cancelled which forced us booking another night at the hotel. Very poor management from American Airlines

The flight attendant spilled ice all down my leg and all over my suede boots and didn’t even apologize or anything. They just gave me a look like “what?!” Incredibly rude and dismissive. I saw them roll their eyes at other guests and even once yell at a lady with a baby.

It’s what we expected from Spirit..reasonable cost, good for a 2-3 hour flight. Disappointed that we had a 2 hour delay in departure from DFW for a maintenance issue, but the pilot handled it well once we were outbound on a different Airbus.

My experience was okay. The flight did not offer even water without a fee. Also had to pay extra for my carry on, as I was told I had to check my bag, even though it said I had the option to carry on a bag when booking. This costed me an extra $100. Would likely not fly with Spirit again.

The flight was rescheduled several times without a reason for the schedule changes. I had to be in New Orleans at a certain time and it was just easier to drive at a certain point. I don’t know if the flight ever left. This is my first experience with Spirit Airlines and is also the last.

In a word, it was horrible. The flight crew timed out and this, apparently was not accounted for by management. This meant that our 10:15 departure turned into a 1:30am departure the next DAY!!! And some brainchild decided to email us 12$ food vouchers set to expire the 9th, but they sent them after EVERY VENDOR WAS CLOSED in the Miami airport and obviously none would be open in New Orleans. I found this to be another sterling example of, at best, shitty management…at worst an absolute lack of empathy for your customers. Triplt Pro: Check-in may be avail for NK222 dep MIA 4/8/2025 10:16pm. Conf#RGSUMI. https://tripit.com/t/. e106fd644e0a; Today 6:16 PM TripIt Pro: NK222 ON TIME. MIA dep 10:16pm term C, gate F5. MSY arr 11:38pm. Today 8:59 PM Tript Pro: NK222 DELAYED. MIA dep 1:00am term C, gate F5. MSY arr 2:18am. Alternate flights: https:// www.tripit.com/t/b2903869f438 Triplt Pro: NK222 PULLED IN. MIA dep 12:30am term C, gate F5. MSY arr 1:48am. Alternate flights: https:/// www.tripit.com/t/834d176c630b Tript Pro: NK222 DELAYED. MIA dep 1:00am term C, gate F5. MSY arr 1:48am. Alternate flights: https:/// www.tripit.com/t/0441e41a9dd3 Triplt Pro: NK222 PULLED IN. MIA dep 12:30am term C, gate F5. MSY arr 1:48am. Alternate flights: https:// www.tripit.com/t/92ac2157ef54 The sender is not in your contact

Perfect for the money paid. Flight from Indianapolis to Fort Lauderdale. Very courteous airport staff and crew. The boarding process went very smooth. Indianapolis was in the middle of several sever storms, delaying boarding and they found a window between the storms, asked everyone for a quick boarding and we departed before we would be held longer by the next storm front. A little rough air 20 min or so after take off, however I’ll take that to being grounded the whole night. Seats kind of small, kind of hard, but very doable for the 2.5 hrs flight. Snacks and drinks available for purchase. We didn’t, as it was a late night flight. One of the checked luggage came wet in Florida and clothes inside got wet from the water that infiltrated through the zipper, I’m assuming it was in the rain in Indianapolis, I cannot blame Spirit as I think the baggage handlers are hired by the airport. I’ll be more careful next time, as I have suitcases that are more water proof and maybe I should only purchase that kind.

Terrible! They kept postponing and finally canceled our flight. They canceled so late. We had no other options but to drive to a different city and try to find a new flight to get onto our cruise. We still aren’t there yet and might not make it.

The flight was on time. The seats are very narrow.

No leg room AT all extremely uncomfortable flight water even cost 5 dollars

This was my first experience with Spirit. The flight was originally delayed because of mechanical problems. There was a major storm moving through our area later in the day. Spirit kept changing the gate and taking the plane for other flights. They did this 6 times until we left 7 hours later, right at the worse time. I am sure it is because they originally delayed the flight through their fault. They would have had to pay for everybody's hotel and later flight. It was a money decision. The pilot did an exceptional job flying and landing the plane in horrific weather. It was one of the roughest and shakiest landings that I have ever done in my extensive flying experience. I just can never go through this discount BS again. Spirit gave us a $30 voucher each for next travel and a $12 meal voucher... but that's nothing compared to sitting in an airport for 7 hours.

Not very good. Paid in excess of $400 for assigned seating for my family and that was not provided. I want that money back.

I chose the seats when booked the flight and paid for them. However after checking in I found we were assigned different seats!

Bag should not be so much money. This is how Frontier takes advantage of customers

It was a no frills flight. Would have liked to be able to charge my device

Seats were extremely uncomfortable and it was very hot on the plane.

Since they are a budget airline, I wasn’t expecting too much but they did some things well. They were on time, the plane was clean, boarding was fairly straightforward and the staff was cheerful and friendly. The only downside was comfort. The seats were fairly hard and after a 2 hour flight your rear end is not feeling so great. Maybe a little more cushion in the seats, Frontier!

Check in at Philadelphia international was absolutely terrible! I fly 2 to 3 times a month and avoid frontier at all cost and will never fly Frontier again! The night before travel, I tried checking in however, the app was giving me an error, so I went to the desktop, which instructed you that you need to use the app. The next day I presented at the check-in gate after trying at least a half dozen times prior to getting into the airport and continuing to getting the error in the app. I actually had rebooted my phone numerous times and reinstall the app just in case. My phone is only one generation older than the current model. It has no problems completing a frontier flight purchase or any other app issues. There was only three frontier employees working at check-in and a huge line while I was in line I continued to try and check in via the app. As I approach the desk, I was dreading dealing with the agent. He was extremely unprofessional, anti-semantic & very ignorant, and mean to the people in front of me, as well as the people who ended up being behind me. He literally told people “Man I don’t care bout y’all” in his native dialect! Maintaining my composure I approached and explained the situation. To which he replied, you’re gonna have to pay then! I don’t understand. It’s an issue with their app not allowing me to check in! Not my issue! He told me if I pay cash it would be $15, $25 if I pay credit card. I don’t understand a $10 difference for paying with a credit card? I am completely cashless so I continued to try using the app to avoid the $25 fee, Which I still don’t believe that I should be responsible for since it was Frontier’s technical issue!!! I continued to check in via the app a couple more times after he verified I was doing everything right he proceeded to continue to belittle the people behind me. Yelling at them saying I don’t care about you people! I cannot believe that this is the way that businesses would treat its customers! Unfortunately, the black mail with dreadlocks did not have a name tag all he had was a frontier sweater on! For the $25 fee that I ended up getting charged on my credit card. I should’ve just booked originally with Spirit or any other carrier! I have no problem paying fees that I should be responsible for, but when it’s due to a technical failure of a company, the customer should not be responsible for it! I cannot believe that it’s not frontier going out of business!

they delayed my flight which ended up, causing my layover flight to leave without me, resulting in me missing a flight and having to stay overnight in Houston international. I got no compensation other than a flight to my original location only a day later. i’ve never experienced such a unprofessional situation

Our flight was suppose to leave at 9pm and we didn’t board until after 3am. We lost a whole day at our hotel and half a day at a park we paid a lot of money for.

Boarding was organized and flight was on time. Overall very satisfied with my flight.

Everything you need to know for your flight to Florida Keys

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.