What is the cheapest airline that flies from District of Columbia to Florida Keys?

Southwest, United Airlines, and Delta are the most popular carriers operating from District of Columbia to Florida Keys

What airlines fly to Florida Keys?

American Airlines, United Airlines and Delta are the top three most popular airlines that fly to Florida Keys from District of Columbia according to our data. American Airlines is the first choice among our users, with 71% 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 District of Columbia to Florida Keys?

As of July 2026, there are 6 operators available to choose from for flights from District of Columbia to Florida Keys.

How old do you have to be to fly from District of Columbia to Florida Keys?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from District of Columbia to Florida Keys.

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

The required travel and health documents for your Florida Keys trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Florida Keys. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$73 Cheap Flights from District of Columbia to Florida Keys in 2026

Q: How many flights depart from District of Columbia to Florida Keys on average per day?

The number of flights available between District of Columbia and Florida Keys is 20 per day as of July 2026. The most frequent departure time is 8:00AM, with 87% of daily flights leaving at noon.

Q: How many flights depart from District of Columbia to Florida Keys on average per week?

As of July 2026, 143 flights take off from District of Columbia 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.

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from District of Columbia to Florida Keys

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

11:14 am - 2:09 pm

IAD

MIA

2h 55mnonstop

7:30 am - 10:12 am

MIA

IAD

2h 42mnonstop

$133Frontier

Tue, Dec 1 - Thu, Dec 3

6:20 am - 4:21 pm

IAD

MIA

10h 01m

1 stop

8:10 am - 5:14 pm

MIA

IAD

9h 04m

1 stop

$158Frontier

Thu, Aug 20 - Mon, Aug 24

7:48 am - 1:53 pm

IAD

MIA

6h 05m

1 stop

8:30 am - 5:14 pm

MIA

IAD

8h 44m

1 stop

$160Frontier

Mon, Aug 10 - Fri, Aug 14

2:45 pm - 5:35 pm

DCA

MIA

2h 50mnonstop

11:22 am - 2:05 pm

MIA

DCA

2h 43mnonstop

$199Delta

Sat, Aug 22 - Sat, Aug 29

2:45 pm - 5:35 pm

DCA

MIA

2h 50mnonstop

11:22 am - 2:05 pm

MIA

DCA

2h 43mnonstop

$208Delta

Sat, Sep 5 - Sun, Sep 6

11:55 am - 7:15 pm

DCA

MIA

7h 20m

1 stop

12:50 pm - 11:05 pm

MIA

DCA

10h 15m

2 stops

$224Southwest

Sat, Aug 22 - Tue, Aug 25

9:30 am - 12:20 pm

DCA

MIA

2h 50mnonstop

10:10 pm - 12:57 am

MIA

DCA

2h 47mnonstop

$225American Airlines

Sat, Aug 22 - Mon, Aug 24

12:28 pm - 12:34 pm

IAD

EYW

24h 06m

1 stop

11:04 am - 10:52 pm

EYW

IAD

11h 48m

2 stops

$232Multiple Airlines

Mon, Aug 10 - Thu, Aug 20

12:28 pm - 12:34 pm

IAD

EYW

24h 06m

1 stop

11:04 am - 10:52 pm

EYW

IAD

11h 48m

2 stops

$241Multiple Airlines

Mon, Aug 17 - Thu, Aug 20

10:30 am - 1:51 pm

DCA

EYW

3h 21mnonstop

12:54 pm - 3:51 pm

EYW

DCA

2h 57mnonstop

$383American Airlines

Sat, Oct 3 - Wed, Oct 14

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Frontier flights from District of Columbia to Florida Keys

Our best Frontier deals on District of Columbia to Florida Keys flight tickets

Frontier

Dec 1

IAD11:14 amWashington, D.C. Dulles Intl

2h 55m

MIA2:09 pmMiami

Dec 3

MIA7:30 amMiami

2h 42m

IAD10:12 amWashington, D.C. Dulles Intl

$133

Frontier

Aug 20

IAD6:20 amWashington, D.C. Dulles Intl

10h 01m

1 stop

MIA4:21 pmMiami

Aug 24

MIA8:10 amMiami

9h 04m

1 stop

IAD5:14 pmWashington, D.C. Dulles Intl

$158

Frontier

Aug 10

IAD7:48 amWashington, D.C. Dulles Intl

6h 05m

1 stop

MIA1:53 pmMiami

Aug 14

MIA8:30 amMiami

8h 44m

1 stop

IAD5:14 pmWashington, D.C. Dulles Intl

$160

Delta flights from District of Columbia to Florida Keys

Our best Delta deals on District of Columbia to Florida Keys flight tickets

Delta

Aug 22

DCA2:45 pmWashington, D.C. Reagan-National

2h 50m

MIA5:35 pmMiami

Aug 29

MIA11:22 amMiami

2h 43m

DCA2:05 pmWashington, D.C. Reagan-National

$199

Delta

Sep 5

DCA2:45 pmWashington, D.C. Reagan-National

2h 50m

MIA5:35 pmMiami

Sep 6

MIA11:22 amMiami

2h 43m

DCA2:05 pmWashington, D.C. Reagan-National

$208

Delta

Aug 22

DCA2:45 pmWashington, D.C. Reagan-National

2h 50m

MIA5:35 pmMiami

Aug 29

MIA11:22 amMiami

2h 43m

DCA2:05 pmWashington, D.C. Reagan-National

$209

momondo Fare Finder

Use the filters below to find and compare flights from District of Columbia 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

Tue 12/1

11:14 am-2:09 pm

Nonstop2h 55m

Miami

Thu 12/3

7:30 am-10:12 am

Nonstop2h 42m

$133

Washington, D.C.Miami

IAD - MIA

IADMIA

Washington, D.C. Dulles Intl

Thu 8/20

6:20 am-4:21 pm

1 stop10h 01m

Miami

Mon 8/24

8:10 am-5:14 pm

1 stop9h 04m

$158

Washington, D.C.Miami

IAD - MIA

IADMIA

Washington, D.C. Dulles Intl

Mon 8/10

7:48 am-1:53 pm

1 stop6h 05m

Miami

Fri 8/14

8:30 am-5:14 pm

1 stop8h 44m

$160

Quickest round-trip

Washington, D.C.Miami

DCA - MIA

DCAMIA

Washington, D.C. Reagan-National

Sat 8/22

2:45 pm-5:35 pm

Nonstop2h 50m

Miami

Sat 8/29

11:22 am-2:05 pm

Nonstop2h 43m

$199

Washington, D.C.Miami

DCA - MIA

DCAMIA

Washington, D.C. Reagan-National

Sat 9/5

2:45 pm-5:35 pm

Nonstop2h 50m

Miami

Sun 9/6

11:22 am-2:05 pm

Nonstop2h 43m

$208

Washington, D.C.Miami

DCA - MIA

DCAMIA

Washington, D.C. Reagan-National

Sat 8/22

11:55 am-7:15 pm

1 stop7h 20m

Miami

Tue 8/25

12:50 pm-11:05 pm

2 stops10h 15m

$224

Washington, D.C.Miami

DCA - MIA

DCAMIA

Washington, D.C. Reagan-National

Sat 8/22

9:30 am-12:20 pm

Nonstop2h 50m

Miami

Mon 8/24

10:10 pm-12:57 am

Nonstop2h 47m

$225

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Mon 8/10

12:28 pm-12:34 pm

1 stop24h 06m

Key West

Thu 8/20

11:04 am-10:52 pm

2 stops11h 48m

$232

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Mon 8/17

12:28 pm-12:34 pm

1 stop24h 06m

Key West

Thu 8/20

11:04 am-10:52 pm

2 stops11h 48m

$241

Washington, D.C.Key West

DCA - EYW

DCAEYW

Washington, D.C. Reagan-National

Sat 10/3

10:30 am-1:51 pm

Nonstop3h 21m

Key West

Wed 10/14

12:54 pm-3:51 pm

Nonstop2h 57m

$383

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 District of Columbia 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 District of Columbia averaging around $225.

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

The cheapest day to depart from District of Columbia to Florida Keys is on a Monday when prices can be found for as low as $175. The most expensive day to fly to Florida Keys is Wednesday, with ticket prices averaging around $295.

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 District of Columbia to Florida Keys in the afternoon for as low as $135. 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 $304.

What is the cheapest District of Columbia to Florida Keys flight route?

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

How far in advance should I book a flight from District of Columbia to Florida Keys?

You are more likely to see cheaper flights to Florida Keys from District of Columbia when booking weeks ahead of your departure date. In general, you can expect to find flights to Florida Keys for around $254 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Florida Keys from District of Columbia for as low as $196 on momondo.

What cabin class options are available on District of Columbia to Florida Keys flights?

There are 4 cabin classes available to choose from on District of Columbia 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 District of Columbia to Florida Keys flights?

No. A direct flight is the cheapest option for a flight between District of Columbia to Florida Keys.

Cheap District of Columbia to Florida Keys flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from District of Columbia to Florida Keys

Fastest flight time	2h 39m
Direct flights	Every day
Airports in Florida Keys	3 airports

The fastest flight from District of Columbia to Florida Keys takes 2h 39m

Direct flights go from District of Columbia to Florida Keys every day.

There are 3 airports in Florida Keys. From District of Columbia there are direct flights to Miami (MIA).

Search flight deals

Frequently asked questions about flying from District of Columbia to Florida Keys

When did momondo last update prices for flights from District of Columbia to Florida Keys?
Prices for flights from District of Columbia to Florida Keys refresh daily.
How many operators does momondo search for flights from District of Columbia to Florida Keys?
As of July 2026, there are 6 operators available to choose from for flights from District of Columbia to Florida Keys.
How old do you have to be to fly from District of Columbia to Florida Keys?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from District of Columbia to Florida Keys.
What documentation or ID do you need to fly to Florida Keys?
The required travel and health documents for your Florida Keys trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Florida Keys. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from District of Columbia to Florida Keys?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from District of Columbia to Florida Keys is Airbus A320-100/200 (11.54% of total bookings). The next most popular plane models are Boeing 777 (10.35%), Airbus A320neo (9.29%), and Boeing 737 MAX 9 (8.93%).

Best airlines flying from District of Columbia to Florida Keys

Compare and see reviews for airlines that fly from District of Columbia to Florida Keys with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $248	Free Cancellation	Rating 7.8 8,473 reviews	Search Delta flights
American Airlines	PriceFrom $258	Free Cancellation	Rating 7.1 11,832 reviews	Search American Airlines flights
United Airlines	PriceFrom $279	Free Cancellation	Rating 7.4 10,011 reviews	Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from District of Columbia to Florida Keys?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from District of Columbia to Florida Keys. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from District of Columbia to Florida Keys with flexible booking policies on momondo?

All flight searches from District of Columbia to Florida Keys on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from District of Columbia to Florida Keys?

Once all potential District of Columbia to Florida Keys flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from District of Columbia to Florida Keys right now. Can momondo alert me if prices change?

Price alerts on flights to Florida Keys from District of Columbia are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.