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

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

What airlines fly to Florida Keys?

American Airlines, Delta and United Airlines 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 68% of people opting to fly with this airline when traveling to Florida Keys. Keep in mind that there are 4 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 April 2026, there are 8 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.

$61 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 25 per day as of April 2026. The most frequent departure time is 12:00PM, with 70% of daily flights leaving in the afternoon.

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

As of April 2026, 175 flights take off from District of Columbia and land in Florida Keys each week. The most common flight departure day for this route is Fri, with 15% of weekly flights taking off on this day.

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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.

7:45 am - 5:10 pm

IAD

MIA

9h 25m

1 stop

11:06 am - 4:21 pm

MIA

IAD

5h 15m

1 stop

$157Multiple Airlines

Mon, May 25 - Thu, May 28

7:30 am - 1:49 pm

IAD

MIA

6h 19m

1 stop

8:30 am - 4:52 pm

MIA

IAD

8h 22m

1 stop

$158Frontier

Mon, Jun 22 - Tue, Jun 23

8:57 pm - 4:31 pm

IAD

MIA

19h 34m

1 stop

8:30 am - 11:17 pm

MIA

IAD

14h 47m

1 stop

$159Frontier

Tue, Jun 23 - Wed, Jul 1

6:00 pm - 5:05 am

DCA

MIA

11h 05m

1 stop

6:30 am - 9:58 pm

MIA

DCA

15h 28m

1 stop

$160Frontier

Mon, May 4 - Sat, May 9

7:11 pm - 12:49 am

IAD

MIA

5h 38m

1 stop

11:06 am - 5:12 pm

MIA

IAD

6h 06m

1 stop

$161Multiple Airlines

Sun, May 3 - Fri, May 8

2:47 pm - 5:37 pm

DCA

MIA

2h 50mnonstop

11:10 am - 1:49 pm

MIA

DCA

2h 39mnonstop

$191Delta

Sat, May 16 - Thu, May 21

2:47 pm - 5:37 pm

DCA

MIA

2h 50mnonstop

11:10 am - 1:49 pm

MIA

DCA

2h 39mnonstop

$192Delta

Sat, May 16 - Sat, May 23

6:02 am - 8:54 am

DCA

MIA

2h 52mnonstop

8:44 pm - 11:25 pm

MIA

DCA

2h 41mnonstop

$196American Airlines

Thu, Jun 4 - Mon, Jun 8

8:25 am - 11:29 am

DCA

EYW

3h 04mnonstop

5:03 pm - 7:59 pm

EYW

DCA

2h 56mnonstop

$314American Airlines

Sat, May 2 - Thu, May 7

2:01 pm - 10:11 am

IAD

EYW

20h 10m

1 stop

2:09 pm - 1:33 pm

EYW

IAD

23h 24m

2 stops

$317Allegiant Air

Thu, Apr 30 - Sun, May 3

Southwest flights from District of Columbia to Florida Keys

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

Southwest

Jun 2

DCA12:40 pmWashington, D.C. Reagan-National

9h 15m

2 stops

MIA9:55 pmMiami

Jun 5

MIA5:35 amMiami

6h 25m

1 stop

DCA12:00 pmWashington, D.C. Reagan-National

$216

Southwest

May 5

DCA12:40 pmWashington, D.C. Reagan-National

9h 15m

2 stops

MIA9:55 pmMiami

May 19

MIA12:10 pmMiami

10h 35m

2 stops

DCA10:45 pmWashington, D.C. Reagan-National

$221

Southwest

Jun 2

DCA10:55 amWashington, D.C. Reagan-National

6h 35m

1 stop

MIA5:30 pmMiami

Jun 9

MIA3:05 pmMiami

8h 25m

1 stop

DCA11:30 pmWashington, D.C. Reagan-National

$237

Delta flights from District of Columbia to Florida Keys

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

Delta

May 16

DCA2:47 pmWashington, D.C. Reagan-National

2h 50m

MIA5:37 pmMiami

May 23

MIA11:10 amMiami

2h 39m

DCA1:49 pmWashington, D.C. Reagan-National

$191

Delta

May 16

DCA2:47 pmWashington, D.C. Reagan-National

2h 50m

MIA5:37 pmMiami

May 23

MIA11:10 amMiami

2h 39m

DCA1:49 pmWashington, D.C. Reagan-National

$192

Delta

Apr 27

DCA7:38 pmWashington, D.C. Reagan-National

5h 16m

1 stop

MIA12:54 amMiami

May 2

MIA11:22 amMiami

2h 41m

DCA2:03 pmWashington, D.C. Reagan-National

$201

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

Mon 5/25

7:45 am-5:10 pm

1 stop9h 25m

Miami

Thu 5/28

11:06 am-4:21 pm

1 stop5h 15m

$157

Washington, D.C.Miami

IAD - MIA

IADMIA

Washington, D.C. Dulles Intl

Mon 6/22

7:30 am-1:49 pm

1 stop6h 19m

Miami

Tue 6/23

8:30 am-4:52 pm

1 stop8h 22m

$158

Washington, D.C.Miami

IAD - MIA

IADMIA

Washington, D.C. Dulles Intl

Tue 6/23

8:57 pm-4:31 pm

1 stop19h 34m

Miami

Wed 7/1

8:30 am-11:17 pm

1 stop14h 47m

$159

Washington, D.C.Miami

DCA - MIA

DCAMIA

Washington, D.C. Reagan-National

Mon 5/4

6:00 pm-5:05 am

1 stop11h 05m

Miami

Sat 5/9

6:30 am-9:58 pm

1 stop15h 28m

$160

Washington, D.C.Miami

IAD - MIA

IADMIA

Washington, D.C. Dulles Intl

Sun 5/3

7:11 pm-12:49 am

1 stop5h 38m

Miami

Fri 5/8

11:06 am-5:12 pm

1 stop6h 06m

$161

Quickest round-trip

Washington, D.C.Miami

DCA - MIA

DCAMIA

Washington, D.C. Reagan-National

Sat 5/16

2:47 pm-5:37 pm

Nonstop2h 50m

Miami

Thu 5/21

11:10 am-1:49 pm

Nonstop2h 39m

$191

Washington, D.C.Miami

DCA - MIA

DCAMIA

Washington, D.C. Reagan-National

Sat 5/16

2:47 pm-5:37 pm

Nonstop2h 50m

Miami

Sat 5/23

11:10 am-1:49 pm

Nonstop2h 39m

$192

Washington, D.C.Miami

DCA - MIA

DCAMIA

Washington, D.C. Reagan-National

Thu 6/4

6:02 am-8:54 am

Nonstop2h 52m

Miami

Mon 6/8

8:44 pm-11:25 pm

Nonstop2h 41m

$196

Washington, D.C.Key West

DCA - EYW

DCAEYW

Washington, D.C. Reagan-National

Sat 5/2

8:25 am-11:29 am

Nonstop3h 04m

Key West

Thu 5/7

5:03 pm-7:59 pm

Nonstop2h 56m

$314

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Thu 4/30

2:01 pm-10:11 am

1 stop20h 10m

Key West

Sun 5/3

2:09 pm-1:33 pm

2 stops23h 24m

$317

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 $192.

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 $167. The most expensive day to fly to Florida Keys is Wednesday, with ticket prices averaging around $268.

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 $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 $289.

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 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 $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 District of Columbia for as low as $174 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 40m
Direct flights	Every day
Airports in Florida Keys	3 airports

The fastest flight from District of Columbia to Florida Keys takes 2h 40m

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 April 2026, there are 8 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 Boeing 777 (11.82% of total bookings). The next most popular plane models are Airbus A320-100/200 (10.09%), Airbus A320neo (9.80%), and Airbus A321neo (7.55%).

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
Spirit Airlines	PriceFrom $105	Free Cancellation	Rating 6.3 8,622 reviews	Search Spirit Airlines flights
Delta	PriceFrom $179	Free Cancellation	Rating 7.9 8,423 reviews	Search Delta flights
American Airlines	PriceFrom $255	Free Cancellation	Rating 7.1 11,610 reviews	Search American Airlines flights
United Airlines	PriceFrom $279	Free Cancellation	Rating 7.4 9,603 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.