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 54% 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?

Frontier, United Airlines, and Allegiant Air 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 November 2025, 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.

$50 Cheap Flights from Washington, D.C. Dulles Intl Airport to Florida Keys in 2025/26

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

As of November 2025, 19 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 16% 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.

2:01 pm - 4:54 pmIAD-MIA

2h 53mnonstop

5:55 am - 11:45 amMIA-IAD

5h 50m1 stop

$93Frontier

Find Deal

Thu, Jan 8 - Tue, Jan 13

2:01 pm - 4:54 pmIAD-MIA

2h 53mnonstop

5:55 am - 11:45 amMIA-IAD

5h 50m1 stop

$94Frontier

Find Deal

Thu, Jan 8 - Tue, Jan 13

10:57 am - 1:40 pmIAD-MIA

2h 43mnonstop

9:05 am - 11:52 amMIA-IAD

2h 47mnonstop

$96Frontier

Find Deal

Sun, Nov 23 - Wed, Nov 26

5:37 pm - 12:46 amIAD-MIA

7h 09m1 stop

2:54 pm - 5:38 pmMIA-IAD

2h 44mnonstop

$97Frontier

Find Deal

Fri, Jan 9 - Sat, Jan 17

10:38 am - 12:42 pmIAD-MIA

26h 04m1 stop

12:26 pm - 3:05 pmMIA-IAD

2h 39mnonstop

$98Frontier

Find Deal

Sun, Dec 7 - Fri, Dec 12

5:45 am - 11:12 amIAD-MIA

5h 27m1 stop

12:26 pm - 3:05 pmMIA-IAD

2h 39mnonstop

$99Multiple Airlines

Find Deal

Thu, Dec 11 - Mon, Dec 15

4:00 pm - 6:45 pmIAD-MIA

2h 45mnonstop

5:30 am - 6:18 pmMIA-IAD

12h 48m1 stop

$100Frontier

Find Deal

Mon, Dec 8 - Thu, Dec 11

8:53 pm - 11:44 pmIAD-MIA

2h 51mnonstop

5:30 am - 4:28 pmMIA-IAD

10h 58m1 stop

$101Frontier

Find Deal

Fri, Jan 23 - Mon, Jan 26

7:57 pm - 1:39 pmIAD-EYW

17h 42m1 stop

10:27 pm - 2:42 pmEYW-IAD

16h 15m2 stops

$287Allegiant Air

Find Deal

Thu, Dec 11 - Sun, Dec 14

7:57 pm - 1:39 pmIAD-EYW

17h 42m1 stop

10:27 pm - 2:42 pmEYW-IAD

16h 15m2 stops

$292Allegiant Air

Find Deal

Thu, Dec 11 - Sun, Dec 14

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

Dec 18

IAD5:35 amWashington, D.C. Dulles Intl

5h 23m

1 stop

MIA10:58 amMiami

Dec 19

MIA10:35 amMiami

2h 39m

IAD1:14 pmWashington, D.C. Dulles Intl

$92

Find similar

Frontier

Jan 8

IAD2:01 pmWashington, D.C. Dulles Intl

2h 53m

MIA4:54 pmMiami

Jan 13

MIA5:55 amMiami

5h 50m

1 stop

IAD11:45 amWashington, D.C. Dulles Intl

$93

Find similar

Frontier

Jan 8

IAD2:01 pmWashington, D.C. Dulles Intl

2h 53m

MIA4:54 pmMiami

Jan 13

MIA5:55 amMiami

5h 50m

1 stop

IAD11:45 amWashington, D.C. Dulles Intl

$94

Find similar

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

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

United Airlines

Dec 3

IAD8:26 amWashington, D.C. Dulles Intl

2h 48m

MIA11:14 amMiami

Dec 4

MIA12:50 pmMiami

2h 34m

IAD3:24 pmWashington, D.C. Dulles Intl

$137

Find similar

United Airlines

Nov 17

IAD8:25 amWashington, D.C. Dulles Intl

2h 49m

MIA11:14 amMiami

Nov 19

MIA12:51 pmMiami

2h 34m

IAD3:25 pmWashington, D.C. Dulles Intl

$147

Find similar

United Airlines

Nov 18

IAD8:45 amWashington, D.C. Dulles Intl

5h 52m

1 stop

MIA2:37 pmMiami

Nov 19

MIA12:51 pmMiami

2h 34m

IAD3:25 pmWashington, D.C. Dulles Intl

$153

Find similar

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

Washington, D.C.Miami

IAD - MIA

IADMIA

Washington, D.C. Dulles Intl

Thu 1/8

2:01 pm-4:54 pm

Nonstop2h 53m

Miami

Tue 1/13

5:55 am-11:45 am

1 stop5h 50m

$93

Washington, D.C.Miami

IAD - MIA

IADMIA

Washington, D.C. Dulles Intl

Thu 1/8

2:01 pm-4:54 pm

Nonstop2h 53m

Miami

Tue 1/13

5:55 am-11:45 am

1 stop5h 50m

$94

Washington, D.C.Miami

IAD - MIA

IADMIA

Washington, D.C. Dulles Intl

Sun 11/23

10:57 am-1:40 pm

Nonstop2h 43m

Miami

Wed 11/26

9:05 am-11:52 am

Nonstop2h 47m

$96

Washington, D.C.Miami

IAD - MIA

IADMIA

Washington, D.C. Dulles Intl

Fri 1/9

5:37 pm-12:46 am

1 stop7h 09m

Miami

Sat 1/17

2:54 pm-5:38 pm

Nonstop2h 44m

$97

Washington, D.C.Miami

IAD - MIA

IADMIA

Washington, D.C. Dulles Intl

Sun 12/7

10:38 am-12:42 pm

1 stop26h 04m

Miami

Fri 12/12

12:26 pm-3:05 pm

Nonstop2h 39m

$98

Washington, D.C.Miami

IAD - MIA

IADMIA

Washington, D.C. Dulles Intl

Thu 12/11

5:45 am-11:12 am

1 stop5h 27m

Miami

Mon 12/15

12:26 pm-3:05 pm

Nonstop2h 39m

$99

Washington, D.C.Miami

IAD - MIA

IADMIA

Washington, D.C. Dulles Intl

Mon 12/8

4:00 pm-6:45 pm

Nonstop2h 45m

Miami

Thu 12/11

5:30 am-6:18 pm

1 stop12h 48m

$100

Washington, D.C.Miami

IAD - MIA

IADMIA

Washington, D.C. Dulles Intl

Fri 1/23

8:53 pm-11:44 pm

Nonstop2h 51m

Miami

Mon 1/26

5:30 am-4:28 pm

1 stop10h 58m

$101

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Thu 12/11

7:57 pm-1:39 pm

1 stop17h 42m

Key West

Sun 12/14

10:27 pm-2:42 pm

2 stops16h 15m

$287

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Thu 12/11

7:57 pm-1:39 pm

1 stop17h 42m

Key West

Sun 12/14

10:27 pm-2:42 pm

2 stops16h 15m

$292

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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 June is another great option to travel to Florida Keys, with average flight prices from Washington, D.C. Dulles Intl Airport averaging around $175.

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 $201. The most expensive day to fly to Florida Keys is Wednesday, with ticket prices averaging around $261.

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 evening. momondo users have found flights departing from Washington, D.C. Dulles Intl Airport to Florida Keys in the evening for as low as $176. 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 $318.

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 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 $261 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 $188 on momondo.

What cabin class options are available on Washington, D.C. Dulles Intl to Florida Keys flights?

There is only 1 cabin class available to choose from on Washington, D.C. Dulles Intl to Florida Keys flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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 43m
Direct flights	Every day
Airports in Florida Keys	1 airport

The fastest flight from Washington, D.C. Dulles Intl Airport to Florida Keys takes 2h 43m

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

There is 1 airport near Florida Keys: Miami (MIA)

Search flight deals

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 November 2025, 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 Airbus A320neo (12.81% of total bookings). The next most popular plane models are Boeing 777 (12.69%), Boeing 737-900 (7.46%), and Boeing 737 MAX 9 (7.43%).

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 $179	Free Cancellation	Rating 7.9 8,009 reviews	Search Delta flights
United Airlines	PriceFrom $249	Free Cancellation	Rating 7.4 9,015 reviews	Search United Airlines flights
American Airlines	PriceFrom $354	Free Cancellation	Rating 7.2 11,049 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

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.

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Popular cities in Florida Keys

Flights to New Yorkfrom $44

Flights to Los Angelesfrom $49

Flights to Miamifrom $49

Flights to Chicagofrom $58

Flights to Orlandofrom $48

Flights to Las Vegasfrom $48

Flights to San Franciscofrom $58

Flights to Washington, D.C.from $40

Flights to Bostonfrom $55

Flights to Atlantafrom $48

Flights to Dallasfrom $52

Flights to Seattlefrom $58

Washington, D.C. Dulles Intl Airport flight routes

Flights from Washington, D.C. Dulles Intl to Miami

Flights from Washington, D.C. Dulles Intl to Atlanta Hartsfield-Jackson

Flights from Washington, D.C. Dulles Intl to Orlando

Flights from Washington, D.C. Dulles Intl to Knoxville McGhee Tyson

Flights from Washington, D.C. Dulles Intl to South Bend/Michiana

Flights from Washington, D.C. Dulles Intl to Tweed-New Haven

Cheap flights from Washington, D.C. Dulles Intl Airport to Florida Keys from $50

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

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Cheap one-way flights

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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

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

Our best United 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

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

What is the cheapest month to fly to Florida Keys?

The month of June is another great option to travel to Florida Keys, with average flight prices from Washington, D.C. Dulles Intl Airport averaging around $175.

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 $201. The most expensive day to fly to Florida Keys is Wednesday, with ticket prices averaging around $261.

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?

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 to Florida Keys?

What cabin class options are available on Washington, D.C. Dulles Intl to Florida Keys flights?

There is only 1 cabin class available to choose from on Washington, D.C. Dulles Intl to Florida Keys flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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.

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

Frontier, United Airlines, and Allegiant Air are the most popular carriers operating 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?

As of November 2025, 19 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 16% of weekly flights taking off on this day.

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

When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Florida Keys?

How many operators does momondo search 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?

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

What is the most popular plane model 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?

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

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

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

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

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