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 55% 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 September 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.

$51 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 September 2025, 8 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 Tue, with 25% 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

3:15 pm - 6:04 pmIAD-MIA

2h 49mnonstop

11:35 am - 2:25 pmMIA-IAD

2h 50mnonstop

$93Frontier

Find Deal

vie., oct. 3 - lun., oct. 6

3:10 pm - 5:57 pmIAD-MIA

2h 47mnonstop

12:20 pm - 2:54 pmMIA-IAD

2h 34mnonstop

$94Frontier

Find Deal

dom., oct. 26 - vie., oct. 31

8:25 am - 11:16 amIAD-MIA

2h 51mnonstop

1:15 pm - 3:50 pmMIA-IAD

2h 35mnonstop

$117United Airlines

Find Deal

mié., oct. 15 - vie., oct. 17

8:25 am - 11:16 amIAD-MIA

2h 51mnonstop

1:15 pm - 3:50 pmMIA-IAD

2h 35mnonstop

$133United Airlines

Find Deal

sáb., oct. 4 - mar., oct. 7

6:15 am - 11:28 amIAD-MIA

5h 13m1 stop

11:34 am - 2:25 pmMIA-IAD

2h 51mnonstop

$137Multiple Airlines

Find Deal

dom., oct. 19 - vie., oct. 24

9:38 pm - 8:15 amIAD-EYW

10h 37m1 stop

11:11 am - 1:25 pmEYW-IAD

50h 14m2 stops

$274Multiple Airlines

Find Deal

sáb., oct. 18 - vie., oct. 24

3:33 pm - 8:06 pmIAD-EYW

4h 33m1 stop

6:17 pm - 11:18 pmEYW-IAD

5h 01m1 stop

$289Delta

Find Deal

sáb., oct. 18 - mar., oct. 21

6:00 am - 11:40 amIAD-EYW

5h 40m1 stop

3:01 pm - 9:28 pmEYW-IAD

6h 27m1 stop

$304Delta

Find Deal

mar., dic. 2 - mar., dic. 9

2:00 pm - 6:35 pmIAD-EYW

4h 35m1 stop

5:24 pm - 11:56 pmEYW-IAD

6h 32m1 stop

$359American Airlines

Find Deal

sáb., ene. 17 - sáb., ene. 24

2:00 pm - 6:35 pmIAD-EYW

4h 35m1 stop

3:55 pm - 11:56 pmEYW-IAD

8h 01m2 stops

$364American Airlines

Find Deal

sáb., ene. 17 - sáb., ene. 24

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

Oct 3

IAD3:15 pmWashington, D.C. Dulles Intl

2h 49m

MIA6:04 pmMiami

Oct 6

MIA11:35 amMiami

2h 50m

IAD2:25 pmWashington, D.C. Dulles Intl

$93

Find similar

Frontier

Oct 26

IAD3:10 pmWashington, D.C. Dulles Intl

2h 47m

MIA5:57 pmMiami

Oct 31

MIA12:20 pmMiami

2h 34m

IAD2:54 pmWashington, D.C. Dulles Intl

$94

Find similar

Frontier

Oct 13

IAD3:10 pmWashington, D.C. Dulles Intl

2h 47m

MIA5:57 pmMiami

Oct 17

MIA11:34 amMiami

2h 51m

IAD2:25 pmWashington, D.C. Dulles Intl

$97

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

Oct 15

IAD8:25 amWashington, D.C. Dulles Intl

2h 51m

MIA11:16 amMiami

Oct 17

MIA1:15 pmMiami

2h 35m

IAD3:50 pmWashington, D.C. Dulles Intl

$117

Find similar

United Airlines

Oct 4

IAD8:25 amWashington, D.C. Dulles Intl

2h 51m

MIA11:16 amMiami

Oct 7

MIA1:15 pmMiami

2h 35m

IAD3:50 pmWashington, D.C. Dulles Intl

$133

Find similar

United Airlines

Oct 12

IAD8:25 amWashington, D.C. Dulles Intl

2h 51m

MIA11:16 amMiami

Oct 18

MIA1:15 pmMiami

2h 35m

IAD3:50 pmWashington, D.C. Dulles Intl

$142

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

vie. 10/3

3:15 pm-6:04 pm

Nonstop2h 49m

Miami

lun. 10/6

11:35 am-2:25 pm

Nonstop2h 50m

$93

Washington, D.C.Miami

IAD - MIA

IADMIA

Washington, D.C. Dulles Intl

dom. 10/26

3:10 pm-5:57 pm

Nonstop2h 47m

Miami

vie. 10/31

12:20 pm-2:54 pm

Nonstop2h 34m

$94

Washington, D.C.Miami

IAD - MIA

IADMIA

Washington, D.C. Dulles Intl

mié. 10/15

8:25 am-11:16 am

Nonstop2h 51m

Miami

vie. 10/17

1:15 pm-3:50 pm

Nonstop2h 35m

$117

Washington, D.C.Miami

IAD - MIA

IADMIA

Washington, D.C. Dulles Intl

sáb. 10/4

8:25 am-11:16 am

Nonstop2h 51m

Miami

mar. 10/7

1:15 pm-3:50 pm

Nonstop2h 35m

$133

Washington, D.C.Miami

IAD - MIA

IADMIA

Washington, D.C. Dulles Intl

dom. 10/19

6:15 am-11:28 am

1 stop5h 13m

Miami

vie. 10/24

11:34 am-2:25 pm

Nonstop2h 51m

$137

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

sáb. 10/18

9:38 pm-8:15 am

1 stop10h 37m

Key West

vie. 10/24

11:11 am-1:25 pm

2 stops50h 14m

$274

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

sáb. 10/18

3:33 pm-8:06 pm

1 stop4h 33m

Key West

mar. 10/21

6:17 pm-11:18 pm

1 stop5h 01m

$289

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

mar. 12/2

6:00 am-11:40 am

1 stop5h 40m

Key West

mar. 12/9

3:01 pm-9:28 pm

1 stop6h 27m

$304

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

sáb. 1/17

2:00 pm-6:35 pm

1 stop4h 35m

Key West

sáb. 1/24

5:24 pm-11:56 pm

1 stop6h 32m

$359

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

sáb. 1/17

2:00 pm-6:35 pm

1 stop4h 35m

Key West

sáb. 1/24

3:55 pm-11:56 pm

2 stops8h 01m

$364

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 September is another great option to travel to Florida Keys, with average flight prices from Washington, D.C. Dulles Intl Airport averaging around $182.

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 Thursday when prices can be found for as low as $223. The most expensive day to fly to Florida Keys is Friday, with ticket prices averaging around $276.

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 at noon. momondo users have found flights departing from Washington, D.C. Dulles Intl Airport to Florida Keys at noon for as low as $138. 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 $337.

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 $280 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 $183 on momondo.

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

There are 3 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 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 September 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 Boeing 777 (13.56% of total bookings). The next most popular plane models are Airbus A320neo (11.09%), Boeing 737 MAX 9 (7.28%), and Boeing 737-900 (6.59%).

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 7,974 reviews	Search Delta flights
United Airlines	PriceFrom $248	Free Cancellation	Rating 7.4 8,926 reviews	Search United Airlines flights
American Airlines	PriceFrom $348	Free Cancellation	Rating 7.2 10,000 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 $50

Flights to Los Angelesfrom $44

Flights to Miamifrom $49

Flights to Chicagofrom $60

Flights to Orlandofrom $56

Flights to Las Vegasfrom $44

Flights to San Franciscofrom $60

Flights to Washington, D.C.from $56

Flights to Bostonfrom $67

Flights to Atlantafrom $51

Flights to Dallasfrom $59

Flights to Seattlefrom $102

Washington, D.C. Dulles Intl Airport flight routes

Flights from Washington, D.C. Dulles Intl to Wilmington New Hanover County

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

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 Tweed-New Haven

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

Cheap flights from Washington, D.C. Dulles Intl Airport to Florida Keys from $51

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Big names and deals

Filter for what you want

Filter for what you want

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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

Cheap last minute flights

Cheap direct flights

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

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 September is another great option to travel to Florida Keys, with average flight prices from Washington, D.C. Dulles Intl Airport averaging around $182.

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 Thursday when prices can be found for as low as $223. The most expensive day to fly to Florida Keys is Friday, with ticket prices averaging around $276.

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 3 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?

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 September 2025, 8 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 Tue, with 25% 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