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Washington, D.C.

$47+ 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 4/14. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — WAS
Apr 6 — Apr 131
Sun 4/6
Sun 4/13
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 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$81
(Frontier)

One-way from

$47
(FlightHub)

Popular in

December

Cheapest in

February

Average price

$167
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. 12% potential increase in price ($25 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($8 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 1, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 3/30. 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.
Wed 4/164:20 pmMIA - BWI
Nonstop2h 47mFrontier
Sun 4/204:14 pmBWI - MIA
Nonstop2h 55mFrontier
Deal found 3/30$79
This Cheapflightsfares deal was found by Cheapflights users on 3/30. 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.
Wed 4/305:45 amMIA - BWI
Nonstop2h 35mMultiple Airlines
Mon 5/58:46 pmBWI - MIA
Nonstop2h 45mMultiple Airlines
Deal found 3/30$83
This Cheapflightsfares deal was found by Cheapflights users on 3/29. 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.
Wed 4/165:45 amMIA - BWI
Nonstop2h 35mSpirit Airlines
Tue 4/225:42 pmBWI - MIA
Nonstop2h 43mSpirit Airlines
Deal found 3/29$86
This Frontier deal was found by Cheapflights users on 3/31. 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.
Wed 6/412:18 pmMIA - IAD
Nonstop2h 40mFrontier
Sat 6/73:45 pmIAD - MIA
Nonstop2h 40mFrontier
Deal found 3/31$108
This American Airlines deal was found by Cheapflights users on 3/31. 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.
Tue 4/294:03 pmMIA - DCA
Nonstop2h 31mAmerican Airlines
Fri 5/25:00 amDCA - MIA
Nonstop2h 36mAmerican Airlines
Deal found 3/31$164
This Southwest deal was found by Cheapflights users on 3/30. 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 4/297:15 amMIA - BWI
Nonstop2h 35mSouthwest
Tue 5/69:10 amBWI - MIA
Nonstop2h 45mSouthwest
Deal found 3/30$167
This Delta deal was found by Cheapflights users on 3/31. 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 4/3010:15 amMIA - DCA
Nonstop2h 43mDelta
Wed 5/71:55 pmDCA - MIA
Nonstop2h 35mDelta
Deal found 3/31$167
This United Airlines deal was found by Cheapflights users on 3/31. 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 5/131:29 pmMIA - IAD
Nonstop2h 41mUnited Airlines
Sun 5/188:20 amIAD - MIA
Nonstop2h 51mUnited Airlines
Deal found 3/31$167
This American Airlines deal was found by Cheapflights users on 3/31. 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 4/243:51 pmMIA - BWI
Nonstop2h 32mAmerican Airlines
Sun 4/276:00 amBWI - MIA
Nonstop2h 48mAmerican Airlines
Deal found 3/31$169
This Southwest deal was found by Cheapflights users on 3/31. 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 4/307:55 amMIA - DCA
1 stop8h 15mSouthwest
Wed 5/72:55 pmDCA - MIA
1 stop6h 40mSouthwest
Deal found 3/31$187
This Delta deal was found by Cheapflights users on 3/31. 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 4/306:00 amMIA - BWI
1 stop4h 55mDelta
Mon 5/56:50 pmBWI - MIA
1 stop5h 58mDelta
Deal found 3/31$197
This Frontier deal was found by Cheapflights users on 3/31. 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.
Wed 4/306:00 amMIA - DCA
1 stop10h 59mFrontier
Wed 5/76:00 pmDCA - MIA
1 stop11h 22mFrontier
Deal found 3/31$198

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 1, 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

MiamiBaltimore

MIA - BWI

MIABWI

Miami

Wed 4/16

4:20 pm-7:07 pm

Nonstop2h 47m

Baltimore/Washington

Sun 4/20

4:14 pm-7:09 pm

Nonstop2h 55m

$79

MiamiBaltimore

MIA - BWI

MIABWI

Miami

Wed 4/30

5:45 am-8:20 am

Nonstop2h 35m

Baltimore/Washington

Mon 5/5

8:46 pm-11:31 pm

Nonstop2h 45m

$83

MiamiBaltimore

MIA - BWI

MIABWI

Miami

Wed 4/16

5:45 am-8:20 am

Nonstop2h 35m

Baltimore/Washington

Tue 4/22

5:42 pm-8:25 pm

Nonstop2h 43m

$86

MiamiWashington, D.C.

MIA - IAD

MIAIAD

Miami

Fri 5/30

12:12 pm-2:53 pm

Nonstop2h 41m

Washington, D.C. Dulles Intl

Sun 6/1

3:45 pm-6:25 pm

Nonstop2h 40m

$106

MiamiWashington, D.C.

MIA - DCA

MIADCA

Miami

Tue 4/29

4:03 pm-6:34 pm

Nonstop2h 31m

Washington, D.C. Reagan-National

Fri 5/2

5:00 am-7:36 am

Nonstop2h 36m

$164

MiamiBaltimore

MIA - BWI

MIABWI

Miami

Tue 4/29

7:15 am-9:50 am

Nonstop2h 35m

Baltimore/Washington

Tue 5/6

9:10 am-11:55 am

Nonstop2h 45m

$167

MiamiWashington, D.C.

MIA - DCA

MIADCA

Miami

Wed 4/30

10:15 am-12:58 pm

Nonstop2h 43m

Washington, D.C. Reagan-National

Wed 5/7

1:55 pm-4:30 pm

Nonstop2h 35m

$167

MiamiWashington, D.C.

MIA - IAD

MIAIAD

Miami

Tue 5/13

1:29 pm-4:10 pm

Nonstop2h 41m

Washington, D.C. Dulles Intl

Sun 5/18

8:20 am-11:11 am

Nonstop2h 51m

$167

MiamiBaltimore

MIA - BWI

MIABWI

Miami

Thu 4/24

3:51 pm-6:23 pm

Nonstop2h 32m

Baltimore/Washington

Sun 4/27

6:00 am-8:48 am

Nonstop2h 48m

$169

MiamiWashington, D.C.

MIA - DCA

MIADCA

Miami

Wed 4/30

7:55 am-4:10 pm

1 stop8h 15m

Washington, D.C. Reagan-National

Wed 5/7

2:55 pm-9:35 pm

1 stop6h 40m

$187

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/30

Showing 1-10 of 38 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 March 28, 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 $241). Flying from Key Largo to Washington, D.C. in March is currently the most expensive (average of $290). 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 1, 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 1, 2025.

The most flights from KE9 to WAS 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 (8 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 1, 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
9,818 reviews

Crew

8.5

Comfort

7.9

Entertainment

7.1

Overall

8.0

Food

7.1

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,818 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Crew

8.5

Comfort

7.9

Entertainment

7.1

Overall

8.0

Food

7.1

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,277 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Crew

8.5

Comfort

7.9

Entertainment

7.1

Overall

8.0

Food

7.1

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,899 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Crew

8.5

Comfort

7.9

Entertainment

7.1

Overall

8.0

Food

7.1

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,615 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Crew

8.5

Comfort

7.9

Entertainment

7.1

Overall

8.0

Food

7.1

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
JetBlue
7.3
Good
2,924 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Crew

8.5

Comfort

7.9

Entertainment

7.1

Overall

8.0

Food

7.1

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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.

  • How popular is this Key Largo to Washington, D.C. flight route?

    Within the past month, 57 users have taken a look at flights from Key Largo to Washington, D.C..

  • 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 $47. Frontier flights start at $49 while deals on American Airlines start at $84 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. Dulles Intl. You may also consider Miami - Washington, D.C. Reagan-National or Miami - Baltimore/Washington.

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

    The top 3 most reliable airlines when flying from Key Largo to Washington, D.C. are Atlas Air (100%), Royal Air Maroc (94%) and Envoy Air (91%).

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

    The cheapest flight price from Key Largo to Washington, D.C. is $37. On average you can expect to pay $1,064. The most popular route, (Miami - Washington, D.C. Dulles Intl), can usually be booked for $106.

  • 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 $241). Flying from Key Largo to Washington, D.C. in March is currently the most expensive (average of $290). 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
Fairfax
Tysons
Springfield
Rockville
Woodbridge
Gaithersburg
Fredericksburg
Linthicum Heights
Silver Spring
Falls Church
Laurel
Easton
Herndon
Bowie
Gettysburg
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 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$30Average$105FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$44Average$143FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$57Average$198FlexibilityNo cancel feeOn-time62%
DeltaCheapest$98Average$324FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$117Average$260FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$118Average$314FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$127Average$322FlexibilityNo cancel feeOn-time71%
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