What airlines fly to Florida Keys?

United Airlines, Delta and American Airlines are the top three most popular airlines that fly to Florida Keys from Washington, D.C. Dulles Intl Airport according to our data. United Airlines is the first choice among our users, with 56% of people opting to fly with this airline when traveling to Florida Keys. Keep in mind that there are 3 different airlines that fly to Florida Keys on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Washington, D.C. Dulles Intl to Florida Keys?

Allegiant Air, Delta, and United Airlines are the most popular carriers operating from Washington, D.C. Dulles Intl to Florida Keys

How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to Florida Keys?

As of May 2026, there are 6 operators available to choose from for flights from Washington, D.C. Dulles Intl Airport to Florida Keys.

How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to Florida Keys?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport to Florida Keys.

What documentation or ID do you need to fly to Florida Keys?

The necessary travel and health documents for your Florida Keys trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$59 Cheap Flights from Washington, D.C. Dulles Intl Airport to Florida Keys in 2026

Q: How many flights depart from Washington, D.C. Dulles Intl Airport to Florida Keys on average per week?

As of May 2026, 24 flights take off from Washington, D.C. Dulles Intl Airport and land in Florida Keys each week. The most common flight departure day for this route is Mon, with 17% of weekly flights taking off on this day.

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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to Florida Keys

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

11:17 am - 4:33 pm

IAD

MIA

5h 16m

1 stop

8:30 am - 4:11 pm

MIA

IAD

7h 41m

1 stop

$138Frontier

Wed, Aug 5 - Thu, Aug 13

7:45 am - 1:20 pm

IAD

MIA

5h 35m

1 stop

11:19 am - 5:31 pm

MIA

IAD

6h 12m

1 stop

$139Frontier

Mon, Jun 1 - Wed, Jun 17

11:17 am - 4:33 pm

IAD

MIA

5h 16m

1 stop

5:28 pm - 11:13 pm

MIA

IAD

5h 45m

1 stop

$140Frontier

Mon, Jul 13 - Wed, Jul 15

11:17 am - 1:53 pm

IAD

MIA

26h 36m

1 stop

8:30 am - 4:11 pm

MIA

IAD

7h 41m

1 stop

$141Frontier

Mon, Jul 20 - Thu, Jul 23

11:17 am - 11:05 pm

IAD

MIA

11h 48m

1 stop

8:30 am - 9:50 am

MIA

IAD

25h 20m

1 stop

$142Frontier

Mon, Jul 13 - Fri, Jul 17

11:17 am - 11:05 pm

IAD

MIA

11h 48m

1 stop

8:10 am - 5:41 pm

MIA

IAD

9h 31m

1 stop

$143Frontier

Mon, Aug 17 - Fri, Aug 21

8:57 pm - 11:05 pm

IAD

MIA

26h 08m

1 stop

5:28 pm - 4:11 pm

MIA

IAD

22h 43m

1 stop

$144Frontier

Sun, Jul 19 - Wed, Jul 22

11:17 am - 11:05 pm

IAD

MIA

11h 48m

1 stop

8:30 am - 5:25 pm

MIA

IAD

8h 55m

1 stop

$145Frontier

Mon, Jul 13 - Fri, Jul 17

7:27 pm - 1:24 pm

IAD

EYW

17h 57m

1 stop

11:46 am - 10:12 am

EYW

IAD

22h 26m

2 stops

$314Multiple Airlines

Sat, May 23 - Wed, May 27

12:45 pm - 5:23 pm

IAD

EYW

4h 38m

1 stop

6:24 pm - 12:44 am

EYW

IAD

6h 20m

1 stop

$319Delta

Sat, Jun 6 - Tue, Jun 9

Frontier flights from Washington, D.C. Dulles Intl Airport to Florida Keys

Our best Frontier deals on Washington, D.C. Dulles Intl Airport to Florida Keys flight tickets

Frontier

Aug 5

IAD11:17 amWashington, D.C. Dulles Intl

5h 16m

1 stop

MIA4:33 pmMiami

Aug 13

MIA8:30 amMiami

7h 41m

1 stop

IAD4:11 pmWashington, D.C. Dulles Intl

$138

Frontier

Jun 1

IAD7:45 amWashington, D.C. Dulles Intl

5h 35m

1 stop

MIA1:20 pmMiami

Jun 17

MIA11:19 amMiami

6h 12m

1 stop

IAD5:31 pmWashington, D.C. Dulles Intl

$139

Frontier

Jul 13

IAD11:17 amWashington, D.C. Dulles Intl

5h 16m

1 stop

MIA4:33 pmMiami

Jul 15

MIA5:28 pmMiami

5h 45m

1 stop

IAD11:13 pmWashington, D.C. Dulles Intl

$140

American Airlines flights from Washington, D.C. Dulles Intl Airport to Florida Keys

Our best American Airlines deals on Washington, D.C. Dulles Intl Airport to Florida Keys flight tickets

American Airlines

May 23

IAD8:22 pmWashington, D.C. Dulles Intl

4h 25m

1 stop

MIA12:47 amMiami

May 30

MIA7:40 amMiami

5h 02m

1 stop

IAD12:42 pmWashington, D.C. Dulles Intl

$268

American Airlines

May 24

IAD1:06 pmWashington, D.C. Dulles Intl

6h 57m

1 stop

MIA8:03 pmMiami

Jun 5

MIA7:04 pmMiami

5h 09m

1 stop

IAD12:13 amWashington, D.C. Dulles Intl

$274

American Airlines

May 16

IAD6:25 amWashington, D.C. Dulles Intl

4h 44m

1 stop

MIA11:09 amMiami

May 21

MIA7:03 pmMiami

5h 10m

1 stop

IAD12:13 amWashington, D.C. Dulles Intl

$275

momondo Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Florida Keys that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Miami

IAD - MIA

IADMIA

Washington, D.C. Dulles Intl

Wed 8/5

11:17 am-4:33 pm

1 stop5h 16m

Miami

Thu 8/13

8:30 am-4:11 pm

1 stop7h 41m

$138

Washington, D.C.Miami

IAD - MIA

IADMIA

Washington, D.C. Dulles Intl

Mon 6/1

7:45 am-1:20 pm

1 stop5h 35m

Miami

Wed 6/17

11:19 am-5:31 pm

1 stop6h 12m

$139

Washington, D.C.Miami

IAD - MIA

IADMIA

Washington, D.C. Dulles Intl

Mon 7/13

11:17 am-4:33 pm

1 stop5h 16m

Miami

Wed 7/15

5:28 pm-11:13 pm

1 stop5h 45m

$140

Washington, D.C.Miami

IAD - MIA

IADMIA

Washington, D.C. Dulles Intl

Mon 7/20

11:17 am-1:53 pm

1 stop26h 36m

Miami

Thu 7/23

8:30 am-4:11 pm

1 stop7h 41m

$141

Washington, D.C.Miami

IAD - MIA

IADMIA

Washington, D.C. Dulles Intl

Mon 7/13

11:17 am-11:05 pm

1 stop11h 48m

Miami

Fri 7/17

8:30 am-9:50 am

1 stop25h 20m

$142

Washington, D.C.Miami

IAD - MIA

IADMIA

Washington, D.C. Dulles Intl

Mon 8/17

11:17 am-11:05 pm

1 stop11h 48m

Miami

Fri 8/21

8:10 am-5:41 pm

1 stop9h 31m

$143

Washington, D.C.Miami

IAD - MIA

IADMIA

Washington, D.C. Dulles Intl

Sun 7/19

8:57 pm-11:05 pm

1 stop26h 08m

Miami

Wed 7/22

5:28 pm-4:11 pm

1 stop22h 43m

$144

Washington, D.C.Miami

IAD - MIA

IADMIA

Washington, D.C. Dulles Intl

Mon 7/13

11:17 am-11:05 pm

1 stop11h 48m

Miami

Fri 7/17

8:30 am-5:25 pm

1 stop8h 55m

$145

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Sat 5/23

7:27 pm-1:24 pm

1 stop17h 57m

Key West

Wed 5/27

11:46 am-10:12 am

2 stops22h 26m

$314

Quickest round-trip

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Sat 6/6

12:45 pm-5:23 pm

1 stop4h 38m

Key West

Tue 6/9

6:24 pm-12:44 am

1 stop6h 20m

$319

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to Florida Keys

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Florida Keys?

The month of October is another great option to travel to Florida Keys, with average flight prices from Washington, D.C. Dulles Intl Airport averaging around $34.

What is the cheapest day to depart on your flight to Florida Keys?

The cheapest day to depart from Washington, D.C. Dulles Intl Airport to Florida Keys is on a Monday when prices can be found for as low as $172. The most expensive day to fly to Florida Keys is Wednesday, with ticket prices averaging around $273.

What is the cheapest time of day to depart on your flight to Florida Keys?

According to our data, the cheapest time of day to fly to Florida Keys is in the afternoon. momondo users have found flights departing from Washington, D.C. Dulles Intl Airport to Florida Keys in the afternoon for as low as $137. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the morning are often more expensive with an average ticket price of $292.

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

Fly from Washington, D.C. Dulles Intl to Key West for the best Washington, D.C. Dulles Intl - Florida Keys flight prices

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

You are more likely to see cheaper flights to Florida Keys from Washington, D.C. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Florida Keys for around $230 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Florida Keys from Washington, D.C. Dulles Intl Airport for as low as $177 on momondo.

Can stopping save me money on Washington, D.C. Dulles Intl Airport to Florida Keys flights?

No. A direct flight is the cheapest option for a flight between Washington, D.C. Dulles Intl Airport to Florida Keys.

Cheap Washington, D.C. Dulles Intl Airport to Florida Keys flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to Florida Keys

Fastest flight time	2h 50m
Direct flights	Every day
Airports in Florida Keys	3 airports

The fastest flight from Washington, D.C. Dulles Intl Airport to Florida Keys takes 2h 50m

Direct flights go from Washington, D.C. Dulles Intl Airport to Florida Keys every day.

There are 3 airports in Florida Keys. From Washington, D.C. Dulles Intl Airport there are direct flights to Miami (MIA).

Search flight deals

Frequently asked questions about flying from Washington, D.C. Dulles Intl Airport to Florida Keys

When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Florida Keys?
Prices for flights from Washington, D.C. Dulles Intl Airport to Florida Keys refresh daily.
How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to Florida Keys?
As of May 2026, there are 6 operators available to choose from for flights from Washington, D.C. Dulles Intl Airport to Florida Keys.
How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to Florida Keys?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport to Florida Keys.
What documentation or ID do you need to fly to Florida Keys?
The necessary travel and health documents for your Florida Keys trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Washington, D.C. Dulles Intl Airport to Florida Keys?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Washington, D.C. Dulles Intl Airport to Florida Keys is Boeing 777 (15.08% of total bookings). The next most popular plane models are Airbus A320neo (9.63%), Boeing 737 MAX 9 (9.43%), and Airbus A321neo (8.55%).

Best airlines flying from Washington, D.C. Dulles Intl Airport to Florida Keys

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Florida Keys with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $248	Free Cancellation	Rating 7.9 8,446 reviews	Search Delta flights
United Airlines	PriceFrom $279	Free Cancellation	Rating 7.4 9,701 reviews	Search United Airlines flights
American Airlines	PriceFrom $358	Free Cancellation	Rating 7.1 11,661 reviews	Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Florida Keys?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Florida Keys from Washington, D.C..

Can I find flights from Washington, D.C. to Florida Keys with flexible booking policies on momondo?

momondo does allow users to show only those flights to Florida Keys from Washington, D.C. which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Washington, D.C. to Florida Keys?

Once you have performed a search for Washington, D.C. to Florida Keys flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Washington, D.C. to Florida Keys right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Washington, D.C. to Florida Keys now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Florida Keys and let you know when they change.

An easier way to manage your Florida Keys trip

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Popular cities in Florida Keys

Flights to New Yorkfrom $77

Flights to Los Angelesfrom $46

Flights to Orlandofrom $63

Flights to Miamifrom $56

Flights to Chicagofrom $59

Flights to San Franciscofrom $58

Flights to Las Vegasfrom $48

Flights to Washington, D.C.from $57

Flights to Bostonfrom $73

Flights to Atlantafrom $50

Flights to Fort Lauderdalefrom $56

Flights to Dallasfrom $50

Cheap flights from Washington, D.C. Dulles Intl Airport to Florida Keys from $59

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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to Florida Keys

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Frontier flights from Washington, D.C. Dulles Intl Airport to Florida Keys

Our best Frontier deals on Washington, D.C. Dulles Intl Airport to Florida Keys flight tickets

American Airlines flights from Washington, D.C. Dulles Intl Airport to Florida Keys

Our best American Airlines deals on Washington, D.C. Dulles Intl Airport to Florida Keys flight tickets

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Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Florida Keys that are best for you.

See travel insights to Florida Keys from

How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to Florida Keys

What is the cheapest month to fly to Florida Keys?

What is the cheapest day to depart on your flight to Florida Keys?

What is the cheapest time of day to depart on your flight to Florida Keys?

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

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

Can stopping save me money on Washington, D.C. Dulles Intl Airport to Florida Keys flights?

What is the cheapest airline that flies from Washington, D.C. Dulles Intl to Florida Keys?

What airlines fly to Florida Keys?

How many flights depart from Washington, D.C. Dulles Intl Airport to Florida Keys on average per week?

Cheap Washington, D.C. Dulles Intl Airport to Florida Keys flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to Florida Keys

Fastest flight time

Direct flights

Airports in Florida Keys

Frequently asked questions about flying from Washington, D.C. Dulles Intl Airport to Florida Keys

Best airlines flying from Washington, D.C. Dulles Intl Airport to Florida Keys

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Florida Keys with momondo

Why use momondo?

An easier way to manage your Florida Keys trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Florida Keys

Popular cities in Florida Keys

Popular flights according to clicks in the last 7 days on momondo

Washington, D.C. Dulles Intl Airport flight routes

According to popular flight searches on momondo this year

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