Key Largo

$42+ Cheap flights from Washington, D.C. (WAS) 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 2/27. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — MIA
Jan 26 — Feb 21
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Washington, D.C. to Key Largo with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

The best prices from Washington, D.C. to Key Largo are usually found in February or January, booked 31 days in advance, depart on a Tuesday or Monday and return on a Wednesday

Cheap flight deals from Washington, D.C. to Key Largo

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) to Key Largo (KE9). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 21, 2025.

Round-trip from

$78
(Cheapflightsfares)

One-way from

$42
(FlightHub)

Popular in

December

Cheapest in

February

Average price

$158
From Washington, D.C. (WAS) to Key Largo
One-way flight from Washington, D.C. (WAS) to Key Largo
Highest demand for flights based on searches. 8% potential increase in price ($21 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($10 potential savings vs. average RT price).
Average for round-trip flights in January 2025

Find flight deals from Washington, D.C. to Key Largo

Cheapest flights from Washington, D.C. to Key Largo
Explore the most affordable flight options available from Washington, D.C. to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 1/21. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/207:52 pmBWI - MIA
Nonstop2h 56mFrontier
Thu 2/274:08 pmMIA - BWI
Nonstop2h 43mFrontier
Deal found 1/21$78
This Cheapflightsfares deal was found by Cheapflights users on 1/20. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/245:36 pmBWI - MIA
Nonstop2h 45mSpirit Airlines
Sat 3/11:25 pmMIA - BWI
1 stop8h 09mSpirit Airlines
Deal found 1/20$87
This Priceline deal was found by Cheapflights users on 1/20. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/167:52 pmBWI - MIA
Nonstop2h 56mMultiple Airlines
Thu 2/2010:32 amMIA - BWI
1 stop7h 29mMultiple Airlines
Deal found 1/20$94
This FlightHub deal was found by Cheapflights users on 1/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/412:37 pmIAD - MIA
1 stop10h 22mFrontier
Thu 2/1312:15 pmMIA - IAD
1 stop6h 02mFrontier
Deal found 1/21$120
This Frontier deal was found by Cheapflights users on 1/20. 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.
Tue 3/46:00 pmDCA - MIA
1 stop11h 16mFrontier
Thu 3/66:25 amMIA - DCA
1 stop15h 34mFrontier
Deal found 1/20$130
This Delta deal was found by Cheapflights users on 1/21. 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.
Wed 2/51:55 pmDCA - MIA
Nonstop2h 56mDelta
Tue 2/1110:20 amMIA - DCA
Nonstop2h 39mDelta
Deal found 1/21$137
This United Airlines deal was found by Cheapflights users on 1/20. 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.
Sun 2/95:41 pmIAD - MIA
Nonstop2h 58mUnited Airlines
Thu 2/138:45 amMIA - IAD
Nonstop2h 43mUnited Airlines
Deal found 1/20$137
This American Airlines deal was found by Cheapflights users on 1/21. 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.
Sat 2/87:59 pmDCA - MIA
Nonstop3h 12mAmerican Airlines
Sat 2/159:19 pmMIA - DCA
Nonstop2h 39mAmerican Airlines
Deal found 1/21$138
This Southwest deal was found by Cheapflights users on 1/20. 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.
Wed 2/196:00 amDCA - MIA
1 stop9h 05mSouthwest
Wed 2/263:50 pmMIA - DCA
1 stop6h 10mSouthwest
Deal found 1/20$157
This United Airlines deal was found by Cheapflights users on 1/20. 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.
Mon 2/104:05 pmDCA - MIA
1 stop5h 30mUnited Airlines
Thu 2/138:00 amMIA - DCA
1 stop6h 25mUnited Airlines
Deal found 1/20$199
This JetBlue deal was found by Cheapflights users on 1/21. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/173:50 pmDCA - MIA
1 stop6h 44mJetBlue
Tue 3/256:00 amMIA - DCA
1 stop5h 44mJetBlue
Deal found 1/21$231
This Delta deal was found by Cheapflights users on 1/20. 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 3/1112:15 pmIAD - MIA
1 stop10h 50mDelta
Tue 3/187:59 pmMIA - IAD
1 stop17h 11mDelta
Deal found 1/20$233

Find flights from Washington, D.C. to Key Largo within your budget

Customize your flight search to find flights from Washington, D.C. 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 January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BaltimoreMiami

BWI - MIA

BWIMIA

Baltimore/Washington

Thu 2/20

7:52 pm-10:48 pm

Nonstop2h 56m

Miami

Thu 2/27

9:16 pm-11:56 pm

Nonstop2h 40m

$78

BaltimoreMiami

BWI - MIA

BWIMIA

Baltimore/Washington

Thu 2/20

7:52 pm-10:48 pm

Nonstop2h 56m

Miami

Thu 2/27

4:08 pm-6:51 pm

Nonstop2h 43m

$80

BaltimoreMiami

BWI - MIA

BWIMIA

Baltimore/Washington

Mon 2/10

5:55 am-1:00 pm

1 stop7h 05m

Miami

Wed 2/12

10:32 am-6:01 pm

1 stop7h 29m

$100

Washington, D.C.Miami

IAD - MIA

IADMIA

Washington, D.C. Dulles Intl

Tue 2/4

12:37 pm-10:59 pm

1 stop10h 22m

Miami

Thu 2/13

12:15 pm-6:17 pm

1 stop6h 02m

$120

Washington, D.C.Miami

DCA - MIA

DCAMIA

Washington, D.C. Reagan-National

Tue 3/4

6:00 pm-5:16 am

1 stop11h 16m

Miami

Thu 3/6

6:25 am-9:59 pm

1 stop15h 34m

$130

Washington, D.C.Miami

DCA - MIA

DCAMIA

Washington, D.C. Reagan-National

Wed 2/5

1:55 pm-4:51 pm

Nonstop2h 56m

Miami

Fri 2/7

10:20 am-12:59 pm

Nonstop2h 39m

$135

Washington, D.C.Miami

IAD - MIA

IADMIA

Washington, D.C. Dulles Intl

Sun 2/9

5:41 pm-8:39 pm

Nonstop2h 58m

Miami

Wed 2/12

1:30 pm-4:06 pm

Nonstop2h 36m

$137

Washington, D.C.Miami

DCA - MIA

DCAMIA

Washington, D.C. Reagan-National

Sat 2/8

7:59 pm-11:11 pm

Nonstop3h 12m

Miami

Sat 2/15

9:19 pm-11:58 pm

Nonstop2h 39m

$138

Washington, D.C.Miami

DCA - MIA

DCAMIA

Washington, D.C. Reagan-National

Wed 2/19

6:00 am-3:05 pm

1 stop9h 05m

Miami

Wed 2/26

3:50 pm-10:00 pm

1 stop6h 10m

$157

Washington, D.C.Miami

DCA - MIA

DCAMIA

Washington, D.C. Reagan-National

Mon 2/10

4:05 pm-9:35 pm

1 stop5h 30m

Miami

Thu 2/13

8:00 am-2:25 pm

1 stop6h 25m

$199

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 34 results
1
2
3
4

Best time to book a flight from Washington, D.C. to Key Largo

Have a flexible travel schedule? Discover the best time to fly to Key Largo from Washington, D.C. 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.

Travel insights for flights from Washington, D.C. to Key Largo

Get recent, data-driven insights about flights from Washington, D.C. to Key Largo including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a round-trip flight from Washington, D.C. to Key Largo. Price data was last updated on January 17, 2025.

The best time to book flights from Washington, D.C. to Key Largo is 30 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. to Key Largo?

Currently, September is the cheapest month in which you can book a flight from Washington, D.C. to Key Largo (average of $230). Flying from Washington, D.C. 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 WAS to KE9?

Find hourly flight availability from Washington, D.C. 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 January 21, 2025.

When flying from Washington, D.C. 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. to Key Largo?

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

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

Weekly flight availability from Washington, D.C. to Key Largo

Explore weekly flight availability from Washington, D.C. to Key Largo. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated January 21, 2025.

The most flights from WAS to KE9 are scheduled on a Monday (26 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (16 on average).

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 January 21, 2025.
To help decide which airline to fly from Washington, D.C. to Key Largo, see what other customers have to say about Spirit Airlines, Delta and United Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very good
4,662 reviews

Boarding

8.2

Food

7.2

Overall

8.1

Crew

8.7

Comfort

8.1

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

8.1
Very good
4,662 reviews
8.1
Very good
4,662 reviews

Boarding

8.2

Food

7.2

Overall

8.1

Crew

8.7

Comfort

8.1

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

8.0
Very good
8,521 reviews
8.1
Very good
4,662 reviews

Boarding

8.2

Food

7.2

Overall

8.1

Crew

8.7

Comfort

8.1

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

7.4
Good
3,201 reviews
8.1
Very good
4,662 reviews

Boarding

8.2

Food

7.2

Overall

8.1

Crew

8.7

Comfort

8.1

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

7.4
Good
8,985 reviews
8.1
Very good
4,662 reviews

Boarding

8.2

Food

7.2

Overall

8.1

Crew

8.7

Comfort

8.1

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

7.2
Good
10,000 reviews
8.1
Very good
4,662 reviews

Boarding

8.2

Food

7.2

Overall

8.1

Crew

8.7

Comfort

8.1

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. to Key Largo. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • How popular is this Washington, D.C. to Key Largo flight route?

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

    One-way options have recently been found by users for as low as $42 on Spirit Airlines. Other airlines that offer cheap prices include Frontier from $43 and Delta from $69 one-way.

  • What are the most popular routes from Washington, D.C. to Key Largo?

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

    Before booking your flight to Key Largo from Washington, D.C., check out the most reliable airlines to get you to your destination on time: Spirit Airlines (100%), Envoy Air (96%), American Airlines( 93%).

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

    Looking at all options, your cheapest flight can be booked for $36. While the most popular route (Washington, D.C. Reagan-National - Miami) can be booked for $129 on average our data indicates $526 when flying from Washington, D.C. to Key Largo.

  • Can I find deals for flights from Washington, D.C. to Key Largo that include hotel bookings?

    Yes. In addition to deals on Washington, D.C. to Key Largo flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington, D.C. to Key Largo?

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

  • Can I find deals for business class flights from Washington, D.C. to Key Largo?

    Yes. Cheapflights offers flight deals from Washington, D.C. 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. to Key Largo?

    Currently, September is the cheapest month in which you can book a flight from Washington, D.C. to Key Largo (average of $230). Flying from Washington, D.C. 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 7 airlines flying from Washington, D.C. to Key Largo

Discover the top 7 airlines that operate flights from Washington, D.C. 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 January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$49Average$154FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$60Average$179FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$88Average$277FlexibilityNo cancel feeOn-time62%
DeltaCheapest$127Average$333FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$146Average$403FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$158Average$401FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$161Average$391FlexibilityNo cancel feeOn-time69%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.