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Cheap flights from Florida Keys to Washington, D.C. from $36

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Florida Keys to Washington, D.C. departing on 1/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Florida Keys to Washington, D.C.

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
10:22 am - 1:01 pm
MIA
-
IAD
2h 39mnonstop
Frontier Logo
1:46 pm - 4:39 pm
IAD
-
MIA
2h 53mnonstop
$68Frontier
Thu, Jan 8 - Sun, Jan 11
Frontier Logo
10:22 am - 1:01 pm
MIA
-
IAD
2h 39mnonstop
Frontier Logo
2:06 pm - 4:59 pm
IAD
-
MIA
2h 53mnonstop
$69Frontier
Thu, Jan 8 - Sat, Jan 10
American Airlines Logo
6:26 am - 9:00 am
MIA
-
DCA
2h 34mnonstop
American Airlines Logo
7:59 pm - 10:56 pm
DCA
-
MIA
2h 57mnonstop
$127American Airlines
Fri, Jan 23 - Sat, Jan 31
American Airlines Logo
8:12 am - 10:45 am
MIA
-
DCA
2h 33mnonstop
American Airlines Logo
5:00 am - 7:58 am
DCA
-
MIA
2h 58mnonstop
$128American Airlines
Thu, Jan 8 - Sat, Jan 10
Delta Logo
11:21 am - 2:00 pm
MIA
-
DCA
2h 39mnonstop
Delta Logo
2:55 pm - 5:53 pm
DCA
-
MIA
2h 58mnonstop
$137Delta
Thu, Jan 8 - Sat, Jan 10
Delta Logo
11:21 am - 2:00 pm
MIA
-
DCA
2h 39mnonstop
Delta Logo
2:35 pm - 5:33 pm
DCA
-
MIA
2h 58mnonstop
$138Delta
Thu, Jan 8 - Sun, Jan 11
Spirit Airlines Logo
2:25 pm - 7:03 pm
EYW
-
BWI
4h 38m1 stop
Spirit Airlines Logo
6:20 am - 1:30 pm
BWI
-
EYW
7h 10m1 stop
$188Spirit Airlines
Fri, Jan 30 - Mon, Feb 2
United Airlines Logo
6:05 pm - 8:53 pm
EYW
-
IAD
2h 48mnonstop
United Airlines Logo
1:00 pm - 4:22 pm
IAD
-
EYW
3h 22mnonstop
$229United Airlines
Fri, Jan 30 - Mon, Feb 2
United Airlines Logo
2:25 pm - 9:13 pm
EYW
-
IAD
6h 48m1 stop
United Airlines Logo
1:00 pm - 4:22 pm
IAD
-
EYW
3h 22mnonstop
$239United Airlines
Fri, Jan 30 - Mon, Feb 2
Spirit Airlines Logo
2:30 pm - 8:04 pm
EYW
-
BWI
5h 34m1 stop
Spirit Airlines Logo
11:30 am - 1:30 pm
BWI
-
EYW
26h 00m3 stops
$273Spirit Airlines
Wed, Jan 7 - Sun, Jan 11

Frontier flights from Florida Keys to Washington, D.C.

Our best Frontier deals on Florida Keys to Washington, D.C. flight tickets
Frontier
Jan 8
MIA10:22 amMiami
2h 39m
IAD1:01 pmWashington, D.C. Dulles Intl
Jan 11
IAD1:46 pmWashington, D.C. Dulles Intl
2h 53m
MIA4:39 pmMiami
$68
Find similar
Frontier
Jan 8
MIA10:22 amMiami
2h 39m
IAD1:01 pmWashington, D.C. Dulles Intl
Jan 11
IAD1:46 pmWashington, D.C. Dulles Intl
2h 53m
MIA4:39 pmMiami
$69
Find similar
Frontier
Jan 16
MIA10:19 amMiami
2h 44m
IAD1:03 pmWashington, D.C. Dulles Intl
Jan 17
IAD2:58 pmWashington, D.C. Dulles Intl
2h 52m
MIA5:50 pmMiami
$70
Find similar

United Airlines flights from Florida Keys to Washington, D.C.

Our best United Airlines deals on Florida Keys to Washington, D.C. flight tickets
United Airlines
Jan 23
MIA6:25 pmMiami
2h 46m
IAD9:11 pmWashington, D.C. Dulles Intl
Jan 25
IAD1:20 pmWashington, D.C. Dulles Intl
3h 02m
MIA4:22 pmMiami
$127
Find similar
United Airlines
Jan 9
MIA6:25 pmMiami
2h 46m
IAD9:11 pmWashington, D.C. Dulles Intl
Jan 10
IAD1:20 pmWashington, D.C. Dulles Intl
3h 02m
MIA4:22 pmMiami
$147
Find similar
United Airlines
Jan 12
MIA7:15 amMiami
7h 24m
1 stop
DCA2:39 pmWashington, D.C. Reagan-National
Jan 19
DCA4:15 pmWashington, D.C. Reagan-National
6h 05m
1 stop
MIA10:20 pmMiami
$191
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Florida Keys to Washington, D.C. that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated December 23, 2025.
Use the filters below to find and compare flights from Florida Keys to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

MiamiWashington, D.C.

MIA - IAD

MIAIAD

Miami

Thu 1/8

10:22 am-1:01 pm

Nonstop2h 39m

Washington, D.C. Dulles Intl

Sun 1/11

1:46 pm-4:39 pm

Nonstop2h 53m

$68

MiamiWashington, D.C.

MIA - IAD

MIAIAD

Miami

Thu 1/8

10:22 am-1:01 pm

Nonstop2h 39m

Washington, D.C. Dulles Intl

Sat 1/10

2:06 pm-4:59 pm

Nonstop2h 53m

$69

MiamiWashington, D.C.

MIA - DCA

MIADCA

Miami

Fri 1/23

6:26 am-9:00 am

Nonstop2h 34m

Washington, D.C. Reagan-National

Sat 1/31

7:59 pm-10:56 pm

Nonstop2h 57m

$127

MiamiWashington, D.C.

MIA - DCA

MIADCA

Miami

Thu 1/8

8:12 am-10:45 am

Nonstop2h 33m

Washington, D.C. Reagan-National

Sat 1/10

5:00 am-7:58 am

Nonstop2h 58m

$128

MiamiWashington, D.C.

MIA - DCA

MIADCA

Miami

Thu 1/8

11:21 am-2:00 pm

Nonstop2h 39m

Washington, D.C. Reagan-National

Sat 1/10

2:55 pm-5:53 pm

Nonstop2h 58m

$137

MiamiWashington, D.C.

MIA - DCA

MIADCA

Miami

Thu 1/8

11:21 am-2:00 pm

Nonstop2h 39m

Washington, D.C. Reagan-National

Sun 1/11

2:35 pm-5:33 pm

Nonstop2h 58m

$138

Key WestBaltimore

EYW - BWI

EYWBWI

Key West

Fri 1/30

2:25 pm-7:03 pm

1 stop4h 38m

Baltimore/Washington

Mon 2/2

6:20 am-1:30 pm

1 stop7h 10m

$188

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Fri 1/30

6:05 pm-8:53 pm

Nonstop2h 48m

Washington, D.C. Dulles Intl

Mon 2/2

1:00 pm-4:22 pm

Nonstop3h 22m

$229

Key WestWashington, D.C.

EYW - IAD

EYWIAD

Key West

Fri 1/30

2:25 pm-9:13 pm

1 stop6h 48m

Washington, D.C. Dulles Intl

Mon 2/2

1:00 pm-4:22 pm

Nonstop3h 22m

$239

Key WestBaltimore

EYW - BWI

EYWBWI

Key West

Wed 1/7

2:30 pm-8:04 pm

1 stop5h 34m

Baltimore/Washington

Sun 1/11

11:30 am-1:30 pm

3 stops26h 00m

$273

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Florida Keys to Washington, D.C.

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 Washington, D.C.?

The month of February is, on average, the cheapest month to fly to Washington, D.C. from Florida Keys, with most prices found around $136. If you’re not able to fly to Washington, D.C. in February, then September is your next best option. Flight prices from Florida Keys to Washington, D.C. during September average around $147.

What is the cheapest day to depart on your flight to Washington, D.C.?

On average, the least expensive day to fly to Washington, D.C. from Florida Keys is on a Friday. momondo users have found tickets for Friday departures for as low as $199. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Florida Keys to Washington, D.C. for around $340.

What is the cheapest time of day to depart on your flight to Washington, D.C.?

In the afternoon is the cheapest time of day to fly from Florida Keys to Washington, D.C. when you can find flight prices for as low as $206. Flying to Washington, D.C. in the afternoon is an ideal time because this is during off-peak travel hours. Try not to purchase tickets at noon because they tend to be around $519. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Florida Keys to Washington, D.C. flight route?

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

How far in advance should I book a flight to Washington, D.C.?

You are more likely to see cheaper flights to Washington, D.C. from Florida Keys when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around $189 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. from Florida Keys for as low as $139 on momondo.

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

There are 4 cabin classes available to choose from on Florida Keys to Washington, D.C. 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 Florida Keys to Washington, D.C. flights?

No. A direct flight is the cheapest option for a flight between Florida Keys to Washington, D.C..

Cheap Florida Keys to Washington, D.C. flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Florida Keys to Washington, D.C.

Fastest flight time

2h 30m

Direct flights

Every day

Airports in Washington, D.C.

2 airports
The fastest flight from Florida Keys to Washington, D.C. takes 2h 30m
Direct flights go from Florida Keys to Washington, D.C. every day.
There are 2 airports in Washington, D.C.. From Florida Keys there are direct flights to Washington, D.C. Reagan-National (DCA), Baltimore/Washington (BWI), Washington, D.C. Dulles Intl (IAD).
Search flight deals

  • When did momondo last update prices for flights from Florida Keys to Washington, D.C.?

    Prices for flights from Florida Keys to Washington, D.C. were last updated today.

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

  • How old do you have to be to fly from Florida Keys to Washington, D.C.?

    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 Florida Keys to Washington, D.C..

  • What documentation or ID do you need to fly to Washington, D.C.?

    The necessary travel and health documents for your Washington, D.C. 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 Florida Keys to Washington, D.C.?

Best airlines flying from Florida Keys to Washington, D.C.

Compare and see reviews for airlines that fly from Florida Keys to Washington, D.C. with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $223Free CancellationRating
7.9
8,014 reviews
Search Delta flights
American AirlinesPriceFrom $224Free CancellationRating
7.2
11,054 reviews
Search American Airlines flights

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
National Harbor
Gettysburg
Arlington
Waldorf
Woodbridge
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Towson
Rockville
Gaithersburg
Reston
Manassas
Fairfax
Glen Burnie
Linthicum Heights
Bethesda

Why use momondo?

Why should I use momondo to find a flight deal from Florida Keys to Washington, D.C.?

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 Washington, D.C. from Florida Keys.

Can I find flights from Florida Keys to Washington, D.C. with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Florida Keys to Washington, D.C. flights to just show those with flexible booking policies.

How can momondo help me find flights from Florida Keys to Washington, D.C.?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Florida Keys to Washington, D.C..

I’m not ready to book a flight from Florida Keys to Washington, D.C. right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Washington, D.C. from Florida Keys. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Washington, D.C. trip

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Find better results for your trip to the United States

Fly into one of these airports located in Washington, D.C.

Airports listed have a maximum distance of 22.4 mi from Washington, D.C.
Washington, D.C. Reagan-National Airport
Washington, D.C. Dulles Intl Airport