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Key Largo

$65+ Cheap flights from Reagan-National (DCA) to Key Largo, FL

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — MIA
Jun 9 — Jun 161
Mon 6/9
Mon 6/16
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. Reagan-National to Key Largo are usually found in September or August, booked 85 days in advance, depart on a Monday or Friday and return on a Thursday

Cheap flight deals from Reagan-National to Key Largo

Keep the following information in mind while searching for Reagan-National to Key Largo flight deals. Data was last updated June 4, 2025.

Round-trip from

$119
(Southwest)

One-way from

$65
(Southwest)

Popular in

December

Cheapest in

September

Average price

$283
From Washington, D.C. Reagan-National to Key Largo
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One-way flight from Washington, D.C. Reagan-National to Key Largo
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Highest demand for flights based on searches. 4% potential increase in price ($14 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Reagan-National to Key Largo

Cheapest flights from Reagan-National to Key Largo
Explore the most affordable flight options available from Reagan-National to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 4, 2025.

This Southwest deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/92:10 pmDCA - MIA
1 stop7h 30mSouthwest
Tue 9/162:50 pmMIA - DCA
1 stop7h 35mSouthwest
Deal found 6/4$109
This American Airlines deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/145:05 amDCA - MIA
Nonstop2h 35mAmerican Airlines
Wed 8/206:40 pmMIA - DCA
Nonstop2h 35mAmerican Airlines
Deal found 6/4$135
This Delta deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/82:55 pmDCA - MIA
Nonstop2h 46mDelta
Tue 7/1511:18 amMIA - DCA
Nonstop2h 42mDelta
Deal found 6/2$137
This United Airlines deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/249:40 amDCA - MIA
1 stop6h 31mUnited Airlines
Thu 6/267:45 amMIA - DCA
1 stop7h 37mUnited Airlines
Deal found 6/3$194
This Frontier deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/306:00 pmDCA - MIA
1 stop12h 19mFrontier
Sat 9/66:00 amMIA - DCA
1 stop11h 01mFrontier
Deal found 6/2$230

Cheapflights Fare Finder

Customize your flight search to find flights from Reagan-National to Key Largo 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, Cheapflights users made 2,558,603 searches. Data last updated June 4, 2025.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Key Largo that are best for you.

Fly from

Reagan-National

Fly to

Key Largo

Route

Depart

Return

Price

Washington, D.C.Miami

DCA - MIA

DCAMIA

Washington, D.C. Reagan-National

Tue 9/9

2:10 pm-9:40 pm

1 stop7h 30m

Miami

Tue 9/16

2:50 pm-10:25 pm

1 stop7h 35m

$109

Washington, D.C.Miami

DCA - MIA

DCAMIA

Washington, D.C. Reagan-National

Thu 8/14

5:05 am-7:40 am

Nonstop2h 35m

Miami

Wed 8/20

6:40 pm-9:15 pm

Nonstop2h 35m

$135

Washington, D.C.Miami

DCA - MIA

DCAMIA

Washington, D.C. Reagan-National

Tue 7/8

2:55 pm-5:41 pm

Nonstop2h 46m

Miami

Tue 7/15

11:18 am-2:00 pm

Nonstop2h 42m

$137

Washington, D.C.Miami

DCA - MIA

DCAMIA

Washington, D.C. Reagan-National

Tue 6/24

9:40 am-4:11 pm

1 stop6h 31m

Miami

Thu 6/26

7:45 am-3:22 pm

1 stop7h 37m

$194

Washington, D.C.Miami

DCA - MIA

DCAMIA

Washington, D.C. Reagan-National

Sat 8/30

6:00 pm-6:19 am

1 stop12h 19m

Miami

Sat 9/6

6:00 am-5:01 pm

1 stop11h 01m

$230

Washington, D.C.Miami

DCA - MIA

DCAMIA

Washington, D.C. Reagan-National

Tue 8/5

6:55 am-4:20 pm

2 stops9h 25m

$65

Washington, D.C.Miami

DCA - MIA

DCAMIA

Washington, D.C. Reagan-National

Tue 9/2

2:59 pm-5:45 pm

Nonstop2h 46m

$69

Washington, D.C.Miami

DCA - MIA

DCAMIA

Washington, D.C. Reagan-National

Sat 7/12

8:05 pm-11:03 pm

Nonstop2h 58m

$91

Washington, D.C.Miami

DCA - MIA

DCAMIA

Washington, D.C. Reagan-National

Sat 10/18

7:00 am-5:40 pm

1 stop10h 40m

$115

Washington, D.C.Miami

DCA - MIA

DCAMIA

Washington, D.C. Reagan-National

Mon 6/30

3:35 pm-11:59 pm

1 stop8h 24m

$120

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/4

Showing 1-10 of 12 results
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Best time to book a flight from Reagan-National to Key Largo

Have a flexible travel schedule? Discover the best time to fly to Key Largo from Reagan-National with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Reagan-National Airport to Key Largo

How far ahead should I book a flight from Washington, D.C. Reagan-National Airport to Key Largo?

Use this chart to determine the optimal time to book a round-trip flight from Reagan-National to Key Largo. Price data was last updated on May 23, 2025.

The best time to book flights from Washington, D.C. Reagan-National Airport to Key Largo is 85 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to Key Largo?

Currently, September is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Key Largo (average of $227). Flying from Washington, D.C. Reagan-National Airport to Key Largo in March is currently the most expensive (average of $289). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from DCA to KE9?

Find hourly flight availability from Reagan-National to Key Largo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 4, 2025.

When flying from Washington, D.C. Reagan-National Airport to Key Largo, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What is the cheapest day to fly from Washington, D.C. Reagan-National Airport to Key Largo?

Use this chart to determine the cheapest time to fly round-trip from Reagan-National to Key Largo. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Washington, D.C. Reagan-National Airport to Key Largo flight should consider departing on Monday evenings when fares are most often at their lowest. Thursday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Key Largo by month

Plan your trip to Key Largo by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Key Largo ranges from 1.6 - 9.9 inches per month. September is typically the wettest month, when rainfall can reach 9.9 in. January is typically the driest time to visit Key Largo when rainfall is around 1.6 in.

Temperature in Key Largo by month

Plan your trip to Key Largo by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Key Largo, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 68.0 F).

Reviews of airlines servicing Key Largo

Get insights into the airlines that provide service to Key Largo. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Key Largo. Reviews last updated June 4, 2025.
See what other customers who have flown with Alaska Airlines, Southwest and Delta from Washington, D.C. to Key Largo have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,285 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,955 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,771 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
JetBlue
7.3
Good
2,928 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from Reagan-National to Key Largo. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from Washington, D.C. Reagan-National Airport to Key Largo one-way?

    The cheapest airline one-way is Southwest, with whom users have recently found tickets for as low as $65. However, be on the lookout for offers from American Airlines and Delta, as they are both options that can get you from Washington, D.C. Reagan-National Airport to Key Largo for a low price.

  • What are the most reliable airlines from Washington, D.C. Reagan-National Airport to Key Largo?

    No one likes to see their flight delayed. When booking a flight from Washington, D.C. Reagan-National Airport to Key Largo consider choosing EL AL (100%), Delta (82%) or American Airlines (80%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Washington, D.C. Reagan-National Airport to Key Largo?

    Looking at all options, your cheapest flight can be booked for $88. While the most popular route (Washington, D.C. Reagan-National - Miami) can be booked for $137 on average our data indicates $711 when flying from Washington, D.C. Reagan-National Airport to Key Largo.

  • Can I find deals for flights from Reagan-National to Key Largo that include hotel bookings?

    Yes. In addition to deals on Reagan-National to Key Largo flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Reagan-National to Key Largo?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Reagan-National to Key Largo.

  • Can I find deals for business class flights from Reagan-National to Key Largo?

    Yes. Cheapflights offers flight deals from Reagan-National to Key Largo by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to Key Largo?

    Currently, September is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Key Largo (average of $227). Flying from Washington, D.C. Reagan-National Airport to Key Largo in March is currently the most expensive (average of $289). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Alternative routes for Reagan-National to Key Largo

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from Reagan-National to Key Largo

Discover the top 8 airlines that operate flights from Reagan-National to Key Largo. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$59Average$162FlexibilityNo cancel feeOn-time65%
FrontierCheapest$73Average$163FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$96Average$289FlexibilityNo cancel feeOn-time62%
DeltaCheapest$117Average$292FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$126Average$256FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$147Average$379FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$155Average$353FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$171Average$407FlexibilityNo cancel feeOn-time69%

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