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Washington, D.C.

$48+ Cheap flights from Key Largo, FL to Washington, D.C. (WAS)

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 5/22. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — WAS
Apr 29 — May 61
Tue 4/29
Tue 5/6
1 adult, Economy
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Cheapflights Tip: The best prices from Key Largo to Washington, D.C. are usually found in February or August, booked 79 days in advance, depart on a Thursday or Friday and return on a Monday

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

Keep the following information in mind while searching for Key Largo to Washington, D.C. flight deals. Data was last updated April 24, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$95
(Kiwi.com)

One-way from

$48
(Cheapflightsfares)

Popular in

December

Cheapest in

February

Average price

$185
Provider with most accurate pricing for Miami-Washington, D.C. (WAS) flight deals.
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Provider most trusted by Cheapflights users for Miami-Washington, D.C. (WAS) flights.
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From Key Largo to Washington, D.C. (WAS)
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One-way flight from Key Largo to Washington, D.C. (WAS)
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Highest demand for flights based on searches. 13% potential increase in price ($26 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Key Largo to Washington, D.C.

Cheapest flights from Key Largo to Washington, D.C.
Explore the most affordable flight options available from Key Largo to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 24, 2025.

This Kiwi.com deal was found by Cheapflights users on 4/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2812:17 pmMIA - IAD
Nonstop2h 41mFrontier
Sun 6/13:45 pmIAD - MIA
Nonstop2h 40mFrontier
Deal found 4/23$95
This Cheapflightsfares deal was found by Cheapflights users on 4/23. 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 7/1712:20 pmMIA - BWI
Nonstop2h 52mFrontier
Sun 7/207:38 pmBWI - MIA
Nonstop2h 52mFrontier
Deal found 4/23$96
This Cheapflightsfares deal was found by Cheapflights users on 4/22. 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 5/15:45 amMIA - BWI
Nonstop2h 35mSpirit Airlines
Sun 5/45:42 pmBWI - MIA
Nonstop2h 43mSpirit Airlines
Deal found 4/22$103
This Cheapflightsfares deal was found by Cheapflights users on 4/23. 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.
Fri 5/28:24 amMIA - BWI
Nonstop2h 46mMultiple Airlines
Sun 5/45:42 pmBWI - MIA
Nonstop2h 43mMultiple Airlines
Deal found 4/23$109
This Delta deal was found by Cheapflights users on 4/23. 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 5/2810:20 amMIA - DCA
Nonstop2h 35mDelta
Sat 5/311:55 pmDCA - MIA
Nonstop2h 35mDelta
Deal found 4/23$179
This American Airlines deal was found by Cheapflights users on 4/23. 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.
Sun 8/3110:03 amMIA - DCA
Nonstop2h 43mAmerican Airlines
Sun 9/75:50 amDCA - MIA
Nonstop2h 39mAmerican Airlines
Deal found 4/23$180
This American Airlines deal was found by Cheapflights users on 4/23. 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.
Wed 5/219:12 pmMIA - BWI
Nonstop2h 40mAmerican Airlines
Sat 5/247:01 pmBWI - MIA
Nonstop2h 51mAmerican Airlines
Deal found 4/23$187
This United Airlines deal was found by Cheapflights users on 4/23. 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.
Thu 5/81:29 pmMIA - IAD
Nonstop2h 41mUnited Airlines
Sun 5/118:20 amIAD - MIA
Nonstop2h 51mUnited Airlines
Deal found 4/23$187
This United Airlines deal was found by Cheapflights users on 4/23. 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.
Wed 5/287:11 amMIA - DCA
1 stop7h 41mUnited Airlines
Sat 5/319:40 amDCA - MIA
1 stop6h 31mUnited Airlines
Deal found 4/23$199
This Frontier deal was found by Cheapflights users on 4/23. 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.
Fri 5/166:00 amMIA - DCA
1 stop15h 59mFrontier
Mon 5/196:00 pmDCA - MIA
1 stop11h 22mFrontier
Deal found 4/23$200
This Delta deal was found by Cheapflights users on 4/23. 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.
Fri 5/237:30 pmMIA - BWI
1 stop5h 18mDelta
Mon 5/267:44 pmBWI - MIA
1 stop4h 53mDelta
Deal found 4/23$207
This Southwest deal was found by Cheapflights users on 4/23. 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.
Thu 5/227:20 amMIA - DCA
1 stop6h 35mSouthwest
Sun 5/2512:35 pmDCA - MIA
1 stop10h 00mSouthwest
Deal found 4/23$208

Cheapflights Fare Finder

Customize your flight search to find flights from Key Largo 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, Cheapflights users made 2,558,603 searches. Data last updated April 24, 2025.
Use the filters below to find and compare flights from Key Largo to Washington, D.C. that are best for you.

Fly from

Key Largo

Fly to

Washington, D.C.

Route

Depart

Return

Price

MiamiWashington, D.C.

MIA - IAD

MIAIAD

Miami

Wed 5/28

12:17 pm-2:58 pm

Nonstop2h 41m

Washington, D.C. Dulles Intl

Sun 6/1

3:45 pm-6:25 pm

Nonstop2h 40m

$95

MiamiBaltimore

MIA - BWI

MIABWI

Miami

Thu 7/17

12:20 pm-3:12 pm

Nonstop2h 52m

Baltimore/Washington

Sun 7/20

7:38 pm-10:30 pm

Nonstop2h 52m

$96

MiamiBaltimore

MIA - BWI

MIABWI

Miami

Tue 5/6

5:45 am-8:20 am

Nonstop2h 35m

Baltimore/Washington

Sun 5/11

5:30 pm-8:12 pm

Nonstop2h 42m

$99

MiamiBaltimore

MIA - BWI

MIABWI

Miami

Tue 5/6

5:45 am-8:20 am

Nonstop2h 35m

Baltimore/Washington

Sun 5/11

7:38 pm-10:21 pm

Nonstop2h 43m

$110

MiamiWashington, D.C.

MIA - DCA

MIADCA

Miami

Wed 5/28

10:20 am-12:55 pm

Nonstop2h 35m

Washington, D.C. Reagan-National

Sat 5/31

1:55 pm-4:30 pm

Nonstop2h 35m

$179

MiamiWashington, D.C.

MIA - DCA

MIADCA

Miami

Sun 8/31

10:03 am-12:46 pm

Nonstop2h 43m

Washington, D.C. Reagan-National

Sun 9/7

5:50 am-8:29 am

Nonstop2h 39m

$180

MiamiWashington, D.C.

MIA - IAD

MIAIAD

Miami

Thu 5/8

1:29 pm-4:10 pm

Nonstop2h 41m

Washington, D.C. Dulles Intl

Sun 5/11

8:20 am-11:11 am

Nonstop2h 51m

$187

MiamiBaltimore

MIA - BWI

MIABWI

Miami

Wed 5/21

9:12 pm-11:52 pm

Nonstop2h 40m

Baltimore/Washington

Sat 5/24

7:01 pm-9:52 pm

Nonstop2h 51m

$187

MiamiWashington, D.C.

MIA - DCA

MIADCA

Miami

Wed 5/28

7:11 am-2:52 pm

1 stop7h 41m

Washington, D.C. Reagan-National

Sat 5/31

9:40 am-4:11 pm

1 stop6h 31m

$199

MiamiWashington, D.C.

MIA - DCA

MIADCA

Miami

Fri 5/16

6:00 am-9:59 pm

1 stop15h 59m

Washington, D.C. Reagan-National

Mon 5/19

6:00 pm-5:22 am

1 stop11h 22m

$200

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/23

Showing 1-10 of 35 results
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Best time to book a flight from Key Largo to Washington, D.C.

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

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

Use this chart to determine the optimal time to book a round-trip flight from Key Largo to Washington, D.C.. Price data was last updated on April 18, 2025.

The price you pay for your flight from Key Largo to Washington, D.C. may vary depending on when you book. For the best chance of a lower fare, look to book 79 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, August is the cheapest month in which you can book a flight from Key Largo to Washington, D.C. (average of $309). Flying from Key Largo to Washington, D.C. in June is currently the most expensive (average of $383). 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 KE9 to WAS?

Find hourly flight availability from Key Largo to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 24, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Key Largo to Washington, D.C. as you normally would.

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

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

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

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

Explore weekly flight availability from Key Largo to Washington, D.C.. 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 April 24, 2025.

The most flights from KE9 to WAS are scheduled on a Thursday (26 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (12 on average).

Rainfall in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. when rainfall is around 2.6 in.

Temperature in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C., 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. 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 Washington, D.C.. Reviews last updated April 24, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest and Delta from Key Largo to Washington, D.C. to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,918 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,918 reviews
Alaska Airlines
8.0
Very good
9,918 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Southwest
8.0
Very good
4,286 reviews
Alaska Airlines
8.0
Very good
9,918 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Delta
8.0
Very good
7,920 reviews
Alaska Airlines
8.0
Very good
9,918 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Avelo Airlines
7.5
Good
Alaska Airlines
8.0
Very good
9,918 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
United Airlines
7.4
Good
8,685 reviews
Alaska Airlines
8.0
Very good
9,918 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Related info for your journey

Find useful and relevant information for your journey from Key Largo to Washington, D.C.. 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 Key Largo to Washington, D.C. one-way?

    To fly one-way, consider booking your trip with Spirit Airlines, which is currently one of the cheapest options available, starting at $48. Frontier flights start at $50 while deals on Avelo Airlines start at $75 one-way.

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

    The most popular route from Key Largo to Washington, D.C. is Miami - Washington, D.C. Reagan-National. You may also consider Miami - Baltimore/Washington or Miami - Washington, D.C. Dulles Intl.

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

    The cheapest flight price from Key Largo to Washington, D.C. is $54. On average you can expect to pay $840. The most popular route, (Miami - Washington, D.C. Reagan-National), can usually be booked for $179.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Key Largo to Washington, D.C. (average of $309). Flying from Key Largo to Washington, D.C. in June is currently the most expensive (average of $383). 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

Traveling to a place near Key Largo?

Book flights to Key Largo if you plan to visit one of these locations
Arlington
Alexandria
Woodbridge
Fairfax
Tysons
Springfield
Rockville
Fredericksburg
Gaithersburg
Silver Spring
Linthicum Heights
Falls Church
Laurel
Easton
Herndon
Bowie
Towson
National Harbor
Oxon Hill
Reston

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Alternative routes for Key Largo to Washington, D.C.

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from Key Largo to Washington, D.C.

Discover the top 7 airlines that operate flights from Key Largo to Washington, D.C.. 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 April 24, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$30Average$110FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$44Average$140FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$57Average$196FlexibilityNo cancel feeOn-time62%
DeltaCheapest$98Average$324FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$117Average$260FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$123Average$314FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$128Average$320FlexibilityNo cancel feeOn-time71%

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