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

Allegiant Air, Southwest, 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 September 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.

$79 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 week?

As of September 2026, 50 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 46% of weekly flights taking off on this day.

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 7 per day as of September 2026. The most frequent departure time is 8:00AM, with 85% of daily flights leaving at noon.

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 pmIAD Washington, D.C. Dulles Intl-MIA Miami

2h 55mnonstop

6:15 am - 2:40 pmMIA Miami-IAD Washington, D.C. Dulles Intl

8h 25m1 stop Atlanta Hartsfield-Jackson

$177Frontier

Tue, Dec 1 - Mon, Dec 7

7:40 am - 3:25 pmIAD Washington, D.C. Dulles Intl-MIA Miami

7h 45m1 stop Atlanta Hartsfield-Jackson

5:15 am - 5:12 pmMIA Miami-IAD Washington, D.C. Dulles Intl

11h 57m1 stop Atlanta Hartsfield-Jackson

$177Frontier

Thu, Oct 29 - Mon, Nov 2

1:45 pm - 4:24 pmDCA Washington, D.C. Reagan-National-MIA Miami

2h 39mnonstop

11:20 am - 1:56 pmMIA Miami-DCA Washington, D.C. Reagan-National

2h 36mnonstop

$209Delta

Wed, Oct 7 - Sat, Oct 10

11:57 am - 2:41 pmDCA Washington, D.C. Reagan-National-MIA Miami

2h 44mnonstop

1:54 pm - 4:31 pmMIA Miami-DCA Washington, D.C. Reagan-National

2h 37mnonstop

$209American Airlines

Tue, Oct 6 - Sat, Oct 10

10:00 am - 12:53 pmDCA Washington, D.C. Reagan-National-MIA Miami

2h 53mnonstop

7:54 am - 10:32 amMIA Miami-DCA Washington, D.C. Reagan-National

2h 38mnonstop

$209American Airlines

Sat, Oct 3 - Sat, Oct 10

8:32 pm - 9:05 amIAD Washington, D.C. Dulles Intl-EYW Key West

12h 33m1 stop Knoxville McGhee Tyson

10:45 am - 2:40 pmEYW Key West-IAD Washington, D.C. Dulles Intl

27h 55m2 stops Tampa Atlanta Hartsfield-Jackson

$209Multiple Airlines

Sun, Nov 22 - Wed, Dec 2

9:48 am - 11:04 amIAD Washington, D.C. Dulles Intl-EYW Key West

25h 16m1 stop Knoxville McGhee Tyson

10:04 am - 11:43 pmEYW Key West-IAD Washington, D.C. Dulles Intl

13h 39m2 stops Tampa Atlanta Hartsfield-Jackson

$212Multiple Airlines

Sun, Nov 8 - Wed, Nov 11

1:45 pm - 4:24 pmDCA Washington, D.C. Reagan-National-MIA Miami

2h 39mnonstop

11:20 am - 1:56 pmMIA Miami-DCA Washington, D.C. Reagan-National

2h 36mnonstop

$213Delta

Sat, Oct 10 - Thu, Oct 15

8:40 am - 11:33 amIAD Washington, D.C. Dulles Intl-MIA Miami

2h 53mnonstop

9:00 am - 11:38 amMIA Miami-IAD Washington, D.C. Dulles Intl

2h 38mnonstop

$217United Airlines

Mon, Oct 26 - Sat, Oct 31

6:45 pm - 9:47 pmIAD Washington, D.C. Dulles Intl-MIA Miami

3h 02mnonstop

9:00 am - 11:41 amMIA Miami-IAD Washington, D.C. Dulles Intl

2h 41mnonstop

$217United Airlines

Tue, Jan 5 - Tue, Jan 26

Cheap last minute flights

Enter your travel dates to find the best prices.

6:00 pm - 4:52 amDCA Washington, D.C. Reagan-National-MIA Miami

10h 52m1 stop Denver Intl

5:55 am - 4:59 pmMIA Miami-DCA Washington, D.C. Reagan-National

11h 04m1 stop Denver Intl

$262Frontier

Tue, Sep 8 - Sat, Oct 3

6:00 pm - 4:52 amDCA Washington, D.C. Reagan-National-MIA Miami

10h 52m1 stop Denver Intl

5:50 am - 4:59 pmMIA Miami-DCA Washington, D.C. Reagan-National

11h 09m1 stop Denver Intl

$264Frontier

Tue, Sep 8 - Tue, Sep 29

7:28 pm - 11:21 amIAD Washington, D.C. Dulles Intl-EYW Key West

15h 53m1 stop Tampa

10:59 am - 5:56 pmEYW Key West-IAD Washington, D.C. Dulles Intl

6h 57m2 stops Orlando Blountville Tri Cities TN/VA

$334Multiple Airlines

Sat, Sep 12 - Mon, Sep 14

7:28 pm - 11:21 amIAD Washington, D.C. Dulles Intl-EYW Key West

15h 53m1 stop Tampa

10:59 am - 5:56 pmEYW Key West-IAD Washington, D.C. Dulles Intl

6h 57m2 stops Orlando Blountville Tri Cities TN/VA

$344Multiple Airlines

Sat, Sep 12 - Mon, Sep 14

5:00 am - 7:40 amDCA Washington, D.C. Reagan-National-MIA Miami

2h 40mnonstop

8:00 am - 10:35 amMIA Miami-DCA Washington, D.C. Reagan-National

2h 35mnonstop

$353American Airlines

Thu, Sep 10 - Thu, Sep 17

9:59 am - 12:52 pmDCA Washington, D.C. Reagan-National-MIA Miami

2h 53mnonstop

8:30 pm - 11:13 pmMIA Miami-DCA Washington, D.C. Reagan-National

2h 43mnonstop

$353American Airlines

Wed, Sep 9 - Sun, Sep 20

1:35 pm - 4:21 pmDCA Washington, D.C. Reagan-National-MIA Miami

2h 46mnonstop

11:15 am - 1:49 pmMIA Miami-DCA Washington, D.C. Reagan-National

2h 34mnonstop

$357Delta

Tue, Sep 8 - Sat, Oct 3

9:00 am - 3:30 pmDCA Washington, D.C. Reagan-National-MIA Miami

6h 30m1 stop Atlanta Hartsfield-Jackson

11:15 am - 1:49 pmMIA Miami-DCA Washington, D.C. Reagan-National

2h 34mnonstop

$363Delta

Wed, Sep 9 - Sun, Sep 20

8:15 am - 4:10 pmDCA Washington, D.C. Reagan-National-MIA Miami

7h 55m1 stop Lambert-St Louis

7:00 am - 3:50 pmMIA Miami-DCA Washington, D.C. Reagan-National

8h 50m2 stops Orlando Nashville Intl

$378Southwest

Thu, Sep 10 - Thu, Sep 17

10:00 am - 3:00 pmDCA Washington, D.C. Reagan-National-MIA Miami

5h 00m1 stop Nashville Intl

7:00 am - 11:55 amMIA Miami-DCA Washington, D.C. Reagan-National

4h 55m1 stop Orlando

$397Southwest

Sat, Sep 12 - Sat, Sep 19

Cheap direct flights

Enter your travel dates to find the best prices.

11:14 am - 2:09 pmIAD Washington, D.C. Dulles Intl-MIA Miami

2h 55mnonstop

7:30 am - 10:12 amMIA Miami-IAD Washington, D.C. Dulles Intl

2h 42mnonstop

$178Frontier

Sun, Dec 6 - Sun, Dec 13

8:22 pm - 11:23 pmIAD Washington, D.C. Dulles Intl-MIA Miami

3h 01mnonstop

4:42 pm - 7:27 pmMIA Miami-IAD Washington, D.C. Dulles Intl

2h 45mnonstop

$179Frontier

Sun, Nov 22 - Thu, Nov 26

1:45 pm - 4:24 pmDCA Washington, D.C. Reagan-National-MIA Miami

2h 39mnonstop

11:20 am - 1:56 pmMIA Miami-DCA Washington, D.C. Reagan-National

2h 36mnonstop

$209Delta

Wed, Oct 7 - Sat, Oct 10

11:57 am - 2:41 pmDCA Washington, D.C. Reagan-National-MIA Miami

2h 44mnonstop

1:54 pm - 4:31 pmMIA Miami-DCA Washington, D.C. Reagan-National

2h 37mnonstop

$209American Airlines

Tue, Oct 6 - Sat, Oct 10

10:00 am - 12:53 pmDCA Washington, D.C. Reagan-National-MIA Miami

2h 53mnonstop

7:54 am - 10:32 amMIA Miami-DCA Washington, D.C. Reagan-National

2h 38mnonstop

$209American Airlines

Sat, Oct 3 - Sat, Oct 10

1:45 pm - 4:24 pmDCA Washington, D.C. Reagan-National-MIA Miami

2h 39mnonstop

11:20 am - 1:56 pmMIA Miami-DCA Washington, D.C. Reagan-National

2h 36mnonstop

$213Delta

Sat, Oct 10 - Thu, Oct 15

8:40 am - 11:33 amIAD Washington, D.C. Dulles Intl-MIA Miami

2h 53mnonstop

9:00 am - 11:38 amMIA Miami-IAD Washington, D.C. Dulles Intl

2h 38mnonstop

$217United Airlines

Mon, Oct 26 - Sat, Oct 31

8:40 am - 11:33 amIAD Washington, D.C. Dulles Intl-MIA Miami

2h 53mnonstop

9:00 am - 11:38 amMIA Miami-IAD Washington, D.C. Dulles Intl

2h 38mnonstop

$217United Airlines

Mon, Nov 2 - Sat, Nov 7

5:25 pm - 8:16 pmDCA Washington, D.C. Reagan-National-MIA Miami

2h 51mnonstop

12:13 pm - 2:49 pmMIA Miami-DCA Washington, D.C. Reagan-National

2h 36mnonstop

$10,450Alaska Airlines

Sat, Oct 3 - Mon, Oct 5

5:23 pm - 8:13 pmDCA Washington, D.C. Reagan-National-MIA Miami

2h 50mnonstop

12:20 pm - 3:00 pmMIA Miami-DCA Washington, D.C. Reagan-National

2h 40mnonstop

$10,463Alaska Airlines

Thu, Oct 29 - Mon, Nov 2

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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

Oct 29

IAD7:40 amWashington, D.C. Dulles Intl

7h 45m

1 stop

MIA3:25 pmMiami

Nov 2

MIA5:15 amMiami

11h 57m

1 stop

IAD5:12 pmWashington, D.C. Dulles Intl

$177

Frontier

Oct 24

DCA1:00 pmWashington, D.C. Reagan-National

11h 47m

1 stop

MIA12:47 amMiami

Oct 31

MIA5:50 amMiami

10h 57m

1 stop

DCA4:47 pmWashington, D.C. Reagan-National

$178

Frontier

Oct 22

IAD7:54 amWashington, D.C. Dulles Intl

7h 31m

1 stop

MIA3:25 pmMiami

Oct 27

MIA5:05 amMiami

12h 07m

1 stop

IAD5:12 pmWashington, D.C. Dulles Intl

$179

American Airlines flights from District of Columbia to Florida Keys

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

American Airlines

Oct 6

DCA11:57 amWashington, D.C. Reagan-National

2h 44m

MIA2:41 pmMiami

Oct 10

MIA1:54 pmMiami

2h 37m

DCA4:31 pmWashington, D.C. Reagan-National

$209

American Airlines

Oct 17

DCA1:42 pmWashington, D.C. Reagan-National

2h 50m

MIA4:32 pmMiami

Oct 22

MIA4:17 pmMiami

2h 38m

DCA6:55 pmWashington, D.C. Reagan-National

$217

American Airlines

Oct 2

DCA9:00 pmWashington, D.C. Reagan-National

2h 45m

MIA11:45 pmMiami

Oct 10

MIA6:27 amMiami

2h 38m

DCA9:05 amWashington, D.C. Reagan-National

$222

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 Washington, D.C. Dulles Intl - MIA Miami

IADMIA

Washington, D.C. Dulles Intl

Tue 12/1

11:14 am-2:09 pm

Nonstop2h 55m

Miami

Mon 12/7

6:15 am-2:40 pm

1 stop8h 25m

$177

Washington, D.C.Miami

IAD Washington, D.C. Dulles Intl - MIA Miami

IADMIA

Washington, D.C. Dulles Intl

Thu 10/29

7:40 am-3:25 pm

1 stop7h 45m

Miami

Mon 11/2

5:15 am-5:12 pm

1 stop11h 57m

$177

Quickest round-trip

Washington, D.C.Miami

DCA Washington, D.C. Reagan-National - MIA Miami

DCAMIA

Washington, D.C. Reagan-National

Wed 10/7

1:45 pm-4:24 pm

Nonstop2h 39m

Miami

Sat 10/10

11:20 am-1:56 pm

Nonstop2h 36m

$209

Washington, D.C.Miami

DCA Washington, D.C. Reagan-National - MIA Miami

DCAMIA

Washington, D.C. Reagan-National

Tue 10/6

11:57 am-2:41 pm

Nonstop2h 44m

Miami

Sat 10/10

1:54 pm-4:31 pm

Nonstop2h 37m

$209

Washington, D.C.Miami

DCA Washington, D.C. Reagan-National - MIA Miami

DCAMIA

Washington, D.C. Reagan-National

Sat 10/3

10:00 am-12:53 pm

Nonstop2h 53m

Miami

Sat 10/10

7:54 am-10:32 am

Nonstop2h 38m

$209

Washington, D.C.Key West

IAD Washington, D.C. Dulles Intl - EYW Key West

IADEYW

Washington, D.C. Dulles Intl

Sun 11/22

8:32 pm-9:05 am

1 stop12h 33m

Key West

Wed 12/2

10:45 am-2:40 pm

2 stops27h 55m

$209

Washington, D.C.Key West

IAD Washington, D.C. Dulles Intl - EYW Key West

IADEYW

Washington, D.C. Dulles Intl

Sun 11/8

9:48 am-11:04 am

1 stop25h 16m

Key West

Wed 11/11

10:04 am-11:43 pm

2 stops13h 39m

$212

Washington, D.C.Miami

DCA Washington, D.C. Reagan-National - MIA Miami

DCAMIA

Washington, D.C. Reagan-National

Sat 10/10

1:45 pm-4:24 pm

Nonstop2h 39m

Miami

Thu 10/15

11:20 am-1:56 pm

Nonstop2h 36m

$213

Washington, D.C.Miami

IAD Washington, D.C. Dulles Intl - MIA Miami

IADMIA

Washington, D.C. Dulles Intl

Mon 10/26

8:40 am-11:33 am

Nonstop2h 53m

Miami

Sat 10/31

9:00 am-11:38 am

Nonstop2h 38m

$217

Washington, D.C.Miami

IAD Washington, D.C. Dulles Intl - MIA Miami

IADMIA

Washington, D.C. Dulles Intl

Tue 1/5

6:45 pm-9:47 pm

Nonstop3h 02m

Miami

Tue 1/26

9:00 am-11:41 am

Nonstop2h 41m

$217

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 $252.

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 $184. The most expensive day to fly to Florida Keys is Tuesday, with ticket prices averaging around $299.

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 $142. 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 $313.

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 $279 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 $221 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

Best Price Found	$79
Fastest flight time	2h 39m
Direct flights	Every day
Airports in Florida Keys	3 airports

The best one-way flight to Florida Keys from District of Columbia in the past 72 hours is $79. The best round-trip flight deal from District of Columbia to Florida Keys found on momondo in the last 72 hours is $177.

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 September 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 (11.53% of total bookings). The next most popular plane models are Airbus A320neo (11.15%), Boeing 777 (10.21%), and Airbus A321neo (8.36%).

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 8,550 reviews	Search Delta flights
American Airlines	PriceFrom $277	Free Cancellation	Rating 7.1 12,040 reviews	Search American Airlines flights
United Airlines	PriceFrom $279	Free Cancellation	Rating 7.4 10,183 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.