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

Frontier, United Airlines, 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 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.

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

As of July 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.

$49 Cheap Flights from Washington, D.C. Dulles Intl Airport to Florida Keys in 2025

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

As of July 2025, 7 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 Thu, with 43% 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

$70Frontier

Find Deal

Fri, Sep 5 - Sun, Sep 7

3:15 pm - 6:04 pmIAD-MIA

2h 49mnonstop

11:35 am - 2:25 pmMIA-IAD

2h 50mnonstop

$71Frontier

Find Deal

Fri, Sep 12 - Mon, Sep 22

8:25 am - 11:16 amIAD-MIA

2h 51mnonstop

1:15 pm - 3:50 pmMIA-IAD

2h 35mnonstop

$167United Airlines

Find Deal

Sat, Sep 27 - Mon, Sep 29

3:26 pm - 8:12 pmIAD-EYW

4h 46m1 stop

11:52 am - 6:49 pmEYW-IAD

6h 57m1 stop

$234Delta

Find Deal

Sat, Aug 30 - Thu, Sep 4

3:26 pm - 8:12 pmIAD-EYW

4h 46m1 stop

7:00 am - 11:23 amEYW-IAD

4h 23m1 stop

$246Delta

Find Deal

Sat, Aug 30 - Wed, Sep 3

8:25 am - 7:55 pmIAD-EYW

11h 30m2 stops

9:50 am - 8:46 pmEYW-IAD

10h 56m1 stop

$325

Find Deal

Fri, Oct 10 - Mon, Oct 13

6:00 am - 2:09 pmIAD-EYW

8h 09m1 stop

3:05 pm - 8:57 pmEYW-IAD

5h 52m1 stop

$330United Airlines

Find Deal

Fri, Nov 7 - Fri, Nov 14

8:09 am - 1:08 pmIAD-EYW

4h 59m1 stop

6:33 pm - 11:07 pmEYW-IAD

4h 34m1 stop

$339American Airlines

Find Deal

Fri, Oct 31 - Mon, Nov 3

8:09 am - 1:08 pmIAD-EYW

4h 59m1 stop

1:45 pm - 11:07 pmEYW-IAD

9h 22m2 stops

$344American Airlines

Find Deal

Fri, Oct 31 - Wed, Nov 5

12:50 pm - 9:01 amIAD-EYW

20h 11m3 stops

8:36 pm - 6:37 pmEYW-IAD

22h 01m2 stops

$361

Find Deal

Fri, Nov 14 - Sun, Nov 16

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

Sep 5

IAD3:15 pmWashington, D.C. Dulles Intl

2h 49m

MIA6:04 pmMiami

Sep 7

MIA11:35 amMiami

2h 50m

IAD2:25 pmWashington, D.C. Dulles Intl

$70

Find similar

Frontier

Sep 12

IAD3:15 pmWashington, D.C. Dulles Intl

2h 49m

MIA6:04 pmMiami

Sep 22

MIA11:35 amMiami

2h 50m

IAD2:25 pmWashington, D.C. Dulles Intl

$71

Find similar

Frontier

Aug 21

IAD8:19 pmWashington, D.C. Dulles Intl

2h 47m

MIA11:06 pmMiami

Aug 24

MIA4:34 pmMiami

2h 50m

IAD7:24 pmWashington, D.C. Dulles Intl

$80

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

Sep 27

IAD8:25 amWashington, D.C. Dulles Intl

2h 51m

MIA11:16 amMiami

Sep 29

MIA1:15 pmMiami

2h 35m

IAD3:50 pmWashington, D.C. Dulles Intl

$167

Find similar

United Airlines

Nov 7

IAD6:00 amWashington, D.C. Dulles Intl

8h 09m

1 stop

EYW2:09 pmKey West

Nov 14

EYW3:05 pmKey West

5h 52m

1 stop

IAD8:57 pmWashington, D.C. Dulles Intl

$330

Find similar

United Airlines

Jan 24

IAD8:25 amWashington, D.C. Dulles Intl

3h 14m

EYW11:39 amKey West

Jan 28

EYW1:30 pmKey West

7h 03m

1 stop

IAD8:33 pmWashington, D.C. Dulles Intl

$349

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

Fri 9/5

3:15 pm-6:04 pm

Nonstop2h 49m

Miami

Sun 9/7

11:35 am-2:25 pm

Nonstop2h 50m

$70

Washington, D.C.Miami

IAD - MIA

IADMIA

Washington, D.C. Dulles Intl

Fri 9/12

3:15 pm-6:04 pm

Nonstop2h 49m

Miami

Mon 9/22

11:35 am-2:25 pm

Nonstop2h 50m

$71

Washington, D.C.Miami

IAD - MIA

IADMIA

Washington, D.C. Dulles Intl

Sat 9/27

8:25 am-11:16 am

Nonstop2h 51m

Miami

Mon 9/29

1:15 pm-3:50 pm

Nonstop2h 35m

$167

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Sat 8/30

3:26 pm-8:12 pm

1 stop4h 46m

Key West

Thu 9/4

11:52 am-6:49 pm

1 stop6h 57m

$234

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Sat 8/30

3:26 pm-8:12 pm

1 stop4h 46m

Key West

Wed 9/3

7:00 am-11:23 am

1 stop4h 23m

$246

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Fri 10/10

8:25 am-7:55 pm

2 stops11h 30m

Key West

Mon 10/13

9:50 am-8:46 pm

1 stop10h 56m

$325

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Fri 11/7

6:00 am-2:09 pm

1 stop8h 09m

Key West

Fri 11/14

3:05 pm-8:57 pm

1 stop5h 52m

$330

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Fri 10/31

8:09 am-1:08 pm

1 stop4h 59m

Key West

Mon 11/3

6:33 pm-11:07 pm

1 stop4h 34m

$339

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Fri 10/31

8:09 am-1:08 pm

1 stop4h 59m

Key West

Wed 11/5

1:45 pm-11:07 pm

2 stops9h 22m

$344

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Fri 11/14

12:50 pm-9:01 am

3 stops20h 11m

Key West

Sun 11/16

8:36 pm-6:37 pm

2 stops22h 01m

$361

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 July is another great option to travel to Florida Keys, with average flight prices from Washington, D.C. Dulles Intl Airport averaging around $198.

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 Saturday when prices can be found for as low as $238. The most expensive day to fly to Florida Keys is Friday, with ticket prices averaging around $310.

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 $130. 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 $342.

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 $296 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 $192 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

Best Price Found	$49
Fastest flight time	2h 47m
Direct flights	Mon, Tue, Fri, Sat and Sun
Airports in Florida Keys	2 airports

The best one-way flight to Florida Keys from Washington, D.C. Dulles Intl Airport in the past 72 hours is $49. The best round-trip flight deal from Washington, D.C. Dulles Intl Airport to Florida Keys found on momondo in the last 72 hours is $70.

The fastest flight from Washington, D.C. Dulles Intl Airport to Florida Keys takes 2h 47m

Direct flights go from Washington, D.C. Dulles Intl Airport to Florida Keys on Monday, Tuesday, Friday, Saturday and Sunday. The only airline offering direct flights is Frontier.

There are 2 airports near Florida Keys: Key West (EYW), 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 July 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 (13.40% of total bookings). The next most popular plane models are Airbus A320neo (9.27%), Boeing 737 MAX 9 (7.15%), and Boeing 737-900 (6.76%).

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 8.0 7,981 reviews	Search Delta flights
United Airlines	PriceFrom $249	Free Cancellation	Rating 7.4 8,900 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 $39

Flights to Los Angelesfrom $37

Flights to Miamifrom $58

Flights to Chicagofrom $59

Flights to Orlandofrom $54

Flights to Las Vegasfrom $35

Flights to San Franciscofrom $49

Flights to Washington, D.C.from $49

Flights to Bostonfrom $77

Flights to Atlantafrom $29

Flights to Dallasfrom $55

Flights to Seattlefrom $93

Washington, D.C. Dulles Intl Airport flight routes

Washington, D.C. Dulles Intl to Savannah/Hilton Head

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

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

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

Washington, D.C. Dulles Intl to Nashville Intl

Washington, D.C. Dulles Intl to Asheville Regional

Cheap flights from Washington, D.C. Dulles Intl Airport to Florida Keys from $49

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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 July is another great option to travel to Florida Keys, with average flight prices from Washington, D.C. Dulles Intl Airport averaging around $198.

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 Saturday when prices can be found for as low as $238. The most expensive day to fly to Florida Keys is Friday, with ticket prices averaging around $310.

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 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 week?

As of July 2025, 7 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 Thu, with 43% 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

Best Price Found

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