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

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

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.

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

As of February 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.

$55 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 day?

As of February 2026, there are 5 flights per day flying from Washington, D.C. Dulles Intl Airport to Florida Keys. The most common time of day flights depart is 1:00PM, with 100% of flights taking off in the afternoon.

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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.

7:05 pm - 9:57 pm

IAD

MIA

2h 52mnonstop

7:04 pm - 12:31 am

MIA

IAD

29h 27m

1 stop

$93Frontier

Mon, Mar 2 - Fri, Mar 6

7:05 pm - 9:57 pm

IAD

MIA

2h 52mnonstop

5:05 am - 4:43 pm

MIA

IAD

11h 38m

1 stop

$99Frontier

Mon, Mar 2 - Thu, Mar 5

7:05 pm - 9:57 pm

IAD

MIA

2h 52mnonstop

7:05 am - 4:43 pm

MIA

IAD

9h 38m

1 stop

$100Multiple Airlines

Mon, Feb 23 - Thu, Feb 26

10:20 am - 6:06 pm

IAD

MIA

7h 46m

1 stop

3:26 pm - 6:07 pm

MIA

IAD

2h 41mnonstop

$102Frontier

Mon, Feb 23 - Fri, Feb 27

3:15 pm - 12:49 am

IAD

MIA

9h 34m

1 stop

6:33 pm - 9:18 pm

MIA

IAD

2h 45mnonstop

$103Frontier

Wed, Apr 1 - Thu, Apr 9

6:31 pm - 9:23 pm

IAD

MIA

2h 52mnonstop

12:26 pm - 12:36 am

MIA

IAD

12h 10m

1 stop

$104Frontier

Sat, Apr 4 - Wed, Apr 15

10:13 pm - 1:05 am

IAD

MIA

2h 52mnonstop

3:12 pm - 12:36 am

MIA

IAD

9h 24m

1 stop

$106Multiple Airlines

Thu, Apr 9 - Tue, Apr 14

12:50 pm - 4:07 pm

IAD

EYW

3h 17mnonstop

6:35 pm - 9:25 pm

EYW

IAD

2h 50mnonstop

$297United Airlines

Mon, Feb 23 - Thu, Feb 26

12:50 pm - 4:07 pm

IAD

EYW

3h 17mnonstop

6:35 pm - 9:25 pm

EYW

IAD

2h 50mnonstop

$304United Airlines

Fri, Feb 27 - Wed, Mar 4

6:00 am - 1:15 pm

IAD

EYW

7h 15m

1 stop

6:35 pm - 9:25 pm

EYW

IAD

2h 50mnonstop

$307United Airlines

Mon, Feb 23 - Thu, Feb 26

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

Mar 2

IAD7:05 pmWashington, D.C. Dulles Intl

2h 52m

MIA9:57 pmMiami

Mar 6

MIA7:04 pmMiami

29h 27m

1 stop

IAD12:31 amWashington, D.C. Dulles Intl

$93

Frontier

Mar 2

IAD7:05 pmWashington, D.C. Dulles Intl

2h 52m

MIA9:57 pmMiami

Mar 5

MIA5:05 amMiami

11h 38m

1 stop

IAD4:43 pmWashington, D.C. Dulles Intl

$99

Frontier

Feb 23

IAD10:20 amWashington, D.C. Dulles Intl

7h 46m

1 stop

MIA6:06 pmMiami

Feb 27

MIA3:26 pmMiami

2h 41m

IAD6:07 pmWashington, D.C. Dulles Intl

$102

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

Mar 2

IAD8:15 amWashington, D.C. Dulles Intl

3h 01m

MIA11:16 amMiami

Mar 11

MIA6:34 pmMiami

2h 50m

IAD9:24 pmWashington, D.C. Dulles Intl

$127

United Airlines

Apr 8

IAD1:20 pmWashington, D.C. Dulles Intl

2h 56m

MIA4:16 pmMiami

Apr 16

MIA6:00 pmMiami

2h 49m

IAD8:49 pmWashington, D.C. Dulles Intl

$161

United Airlines

Feb 8

IAD8:15 amWashington, D.C. Dulles Intl

3h 01m

MIA11:16 amMiami

Feb 14

MIA6:35 pmMiami

2h 50m

IAD9:25 pmWashington, D.C. Dulles Intl

$162

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

Mon 3/2

7:05 pm-9:57 pm

Nonstop2h 52m

Miami

Fri 3/6

7:04 pm-12:31 am

1 stop29h 27m

$93

Washington, D.C.Miami

IAD - MIA

IADMIA

Washington, D.C. Dulles Intl

Mon 3/2

7:05 pm-9:57 pm

Nonstop2h 52m

Miami

Thu 3/5

5:05 am-4:43 pm

1 stop11h 38m

$99

Washington, D.C.Miami

IAD - MIA

IADMIA

Washington, D.C. Dulles Intl

Mon 2/23

7:05 pm-9:57 pm

Nonstop2h 52m

Miami

Thu 2/26

7:05 am-4:43 pm

1 stop9h 38m

$100

Washington, D.C.Miami

IAD - MIA

IADMIA

Washington, D.C. Dulles Intl

Mon 2/23

10:20 am-6:06 pm

1 stop7h 46m

Miami

Fri 2/27

3:26 pm-6:07 pm

Nonstop2h 41m

$102

Washington, D.C.Miami

IAD - MIA

IADMIA

Washington, D.C. Dulles Intl

Wed 4/1

3:15 pm-12:49 am

1 stop9h 34m

Miami

Thu 4/9

6:33 pm-9:18 pm

Nonstop2h 45m

$103

Washington, D.C.Miami

IAD - MIA

IADMIA

Washington, D.C. Dulles Intl

Sat 4/4

6:31 pm-9:23 pm

Nonstop2h 52m

Miami

Wed 4/15

12:26 pm-12:36 am

1 stop12h 10m

$104

Washington, D.C.Miami

IAD - MIA

IADMIA

Washington, D.C. Dulles Intl

Thu 4/9

10:13 pm-1:05 am

Nonstop2h 52m

Miami

Tue 4/14

3:12 pm-12:36 am

1 stop9h 24m

$106

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Mon 2/23

12:50 pm-4:07 pm

Nonstop3h 17m

Key West

Thu 2/26

6:35 pm-9:25 pm

Nonstop2h 50m

$297

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Fri 2/27

12:50 pm-4:07 pm

Nonstop3h 17m

Key West

Wed 3/4

6:35 pm-9:25 pm

Nonstop2h 50m

$304

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Mon 2/23

6:00 am-1:15 pm

1 stop7h 15m

Key West

Thu 2/26

6:35 pm-9:25 pm

Nonstop2h 50m

$307

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 June is another great option to travel to Florida Keys, with average flight prices from Washington, D.C. Dulles Intl Airport averaging around $176.

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 $168. The most expensive day to fly to Florida Keys is Wednesday, with ticket prices averaging around $236.

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 $141. 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 $286.

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 $231 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 $175 on momondo.

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

There are 2 cabin classes 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 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

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 February 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 Airbus A320neo (13.56% of total bookings). The next most popular plane models are Boeing 777 (13.48%), Boeing 737-900 (7.82%), and Boeing 737 MAX 9 (7.64%).

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 8,130 reviews	Search Delta flights
United Airlines	PriceFrom $259	Free Cancellation	Rating 7.4 9,229 reviews	Search United Airlines flights
American Airlines	PriceFrom $337	Free Cancellation	Rating 7.2 11,212 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 $49

Flights to Los Angelesfrom $46

Flights to Miamifrom $27

Flights to Chicagofrom $46

Flights to Orlandofrom $49

Flights to San Franciscofrom $54

Flights to Las Vegasfrom $49

Flights to Washington, D.C.from $51

Flights to Bostonfrom $51

Flights to Atlantafrom $42

Flights to Dallasfrom $51

Flights to Seattlefrom $73

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 Orlando

Flights from Washington, D.C. Dulles Intl to Blountville Tri Cities TN/VA

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

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

Flights from Washington, D.C. Dulles Intl to Asheville Regional

Cheap flights from Washington, D.C. Dulles Intl Airport to Florida Keys from $55

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

Cheap round-trip flights

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

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.

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?

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 $176.

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 $168. The most expensive day to fly to Florida Keys is Wednesday, with ticket prices averaging around $236.

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 are 2 cabin classes 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?

Allegiant Air, Frontier, and Delta 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 day?

As of February 2026, there are 5 flights per day flying from Washington, D.C. Dulles Intl Airport to Florida Keys. The most common time of day flights depart is 1:00PM, with 100% of flights taking off in the afternoon.

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

As of February 2026, 35 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.

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