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$34+ 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 3/20. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — WAS
feb. 25 — mar. 41
mar. 2/25
mar. 3/4
1 adult, Economy
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The best prices from Key Largo to Washington, D.C. are usually found in February or August, booked 55 days in advance, depart on a Friday or Thursday 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 febrero 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$68
(Priceline)

One-way from

$34
(Frontier)

Popular in

December

Cheapest in

February

Average price

$137
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. 11% potential increase in price ($24 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 February 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 febrero 20, 2025.

This Priceline deal was found by Cheapflights users on 2/20. 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.
vie. 4/42:35 pmMIA - BWI
Nonstop2h 41mSpirit Airlines
dom. 4/66:11 pmBWI - MIA
Nonstop2h 45mSpirit Airlines
Deal found 2/20$68
This Priceline deal was found by Cheapflights users on 2/19. 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.
mar. 3/187:50 amMIA - BWI
Nonstop2h 44mMultiple Airlines
mar. 3/255:30 amBWI - MIA
1 stop6h 31mMultiple Airlines
Deal found 2/19$71
This Frontier deal was found by Cheapflights users on 2/19. 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.
sáb. 3/224:20 pmMIA - BWI
Nonstop2h 43mFrontier
mar. 3/2511:34 amBWI - MIA
Nonstop2h 53mFrontier
Deal found 2/19$74
This Frontier deal was found by Cheapflights users on 2/20. 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.
sáb. 5/2412:25 pmMIA - IAD
Nonstop2h 40mFrontier
lun. 5/263:55 pmIAD - MIA
Nonstop2h 40mFrontier
Deal found 2/20$78
This Trip.com deal was found by Cheapflights users on 2/19. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 3/1210:14 amMIA - DCA
Nonstop2h 45mDelta
mié. 3/191:54 pmDCA - MIA
Nonstop2h 51mDelta
Deal found 2/19$96
This Frontier deal was found by Cheapflights users on 2/19. 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.
mié. 3/56:25 amMIA - DCA
1 stop15h 34mFrontier
sáb. 3/86:00 pmDCA - MIA
1 stop9h 55mFrontier
Deal found 2/19$100
This United Airlines deal was found by Cheapflights users on 2/19. 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.
jue. 3/68:40 amMIA - IAD
Nonstop2h 43mUnited Airlines
lun. 3/107:30 pmIAD - MIA
Nonstop2h 52mUnited Airlines
Deal found 2/19$101
This American Airlines deal was found by Cheapflights users on 2/19. 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.
mié. 3/51:54 pmMIA - DCA
Nonstop2h 35mAmerican Airlines
dom. 5/117:00 amDCA - MIA
Nonstop2h 43mAmerican Airlines
Deal found 2/19$124
This American Airlines deal was found by Cheapflights users on 2/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/68:04 pmMIA - BWI
Nonstop2h 59mAmerican Airlines
dom. 3/98:00 amBWI - MIA
Nonstop2h 54mAmerican Airlines
Deal found 2/20$152
This United Airlines deal was found by Cheapflights users on 2/19. 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.
mié. 3/58:00 amMIA - DCA
1 stop7h 25mUnited Airlines
dom. 5/117:00 amDCA - MIA
1 stop5h 51mUnited Airlines
Deal found 2/19$187
This JetBlue deal was found by Cheapflights users on 2/19. 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.
mié. 3/126:00 amMIA - DCA
1 stop9h 04mJetBlue
mié. 3/1912:29 pmDCA - MIA
1 stop10h 05mJetBlue
Deal found 2/19$199
This Delta deal was found by Cheapflights users on 2/20. 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.
mar. 5/1312:05 pmMIA - BWI
1 stop5h 00mDelta
mar. 5/207:00 amBWI - MIA
1 stop7h 30mDelta
Deal found 2/20$215

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

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 febrero 20, 2025.

Fly from

Key Largo

Fly to

Washington, D.C.

Route

Depart

Return

Price

MiamiBaltimore

MIA - BWI

MIABWI

Miami

vie. 4/4

2:35 pm-5:16 pm

Nonstop2h 41m

Baltimore/Washington

mar. 4/8

6:11 pm-8:56 pm

Nonstop2h 45m

$68

MiamiBaltimore

MIA - BWI

MIABWI

Miami

mar. 3/18

7:50 am-10:34 am

Nonstop2h 44m

Baltimore/Washington

mar. 3/25

5:30 am-12:01 pm

1 stop6h 31m

$71

MiamiBaltimore

MIA - BWI

MIABWI

Miami

vie. 2/28

7:50 am-10:34 am

Nonstop2h 44m

Baltimore/Washington

sáb. 3/1

5:36 pm-8:31 pm

Nonstop2h 55m

$77

MiamiWashington, D.C.

MIA - DCA

MIADCA

Miami

mié. 3/12

10:14 am-12:59 pm

Nonstop2h 45m

Washington, D.C. Reagan-National

mié. 3/19

1:54 pm-4:45 pm

Nonstop2h 51m

$96

MiamiWashington, D.C.

MIA - DCA

MIADCA

Miami

mié. 3/5

6:25 am-9:59 pm

1 stop15h 34m

Washington, D.C. Reagan-National

sáb. 3/8

6:00 pm-3:55 am

1 stop9h 55m

$100

MiamiWashington, D.C.

MIA - IAD

MIAIAD

Miami

mar. 4/15

10:36 am-7:44 pm

1 stop9h 08m

Washington, D.C. Dulles Intl

sáb. 4/19

11:01 am-9:00 pm

1 stop9h 59m

$100

MiamiWashington, D.C.

MIA - IAD

MIAIAD

Miami

jue. 3/6

8:40 am-11:23 am

Nonstop2h 43m

Washington, D.C. Dulles Intl

lun. 3/10

7:30 pm-10:22 pm

Nonstop2h 52m

$101

MiamiWashington, D.C.

MIA - DCA

MIADCA

Miami

mié. 3/5

1:54 pm-4:29 pm

Nonstop2h 35m

Washington, D.C. Reagan-National

dom. 5/11

7:00 am-9:43 am

Nonstop2h 43m

$124

MiamiBaltimore

MIA - BWI

MIABWI

Miami

jue. 3/6

8:04 pm-11:03 pm

Nonstop2h 59m

Baltimore/Washington

dom. 3/9

8:00 am-10:54 am

Nonstop2h 54m

$152

MiamiWashington, D.C.

MIA - DCA

MIADCA

Miami

mié. 3/5

8:00 am-3:25 pm

1 stop7h 25m

Washington, D.C. Reagan-National

dom. 5/11

7:00 am-12:51 pm

1 stop5h 51m

$187

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/18

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.

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

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

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 February 14, 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 55 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 $389). 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 febrero 20, 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 Thursday evenings when fares are most often at their lowest. Monday 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 febrero 20, 2025.

The most flights from KE9 to WAS are scheduled on a Wednesday (31 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (9 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 febrero 20, 2025.
Peruse reviews from past customers who have flown with Southwest, Alaska Airlines 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.
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,411 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Alaska Airlines
8.0
Very good
9,692 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very good
8,220 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

JetBlue
7.4
Good
3,070 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

United Airlines
7.4
Good
8,766 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

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 Frontier, which is currently one of the cheapest options available, starting at $34. Spirit Airlines flights start at $35 while deals on Delta start at $62 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 $103. On average you can expect to pay $806. The most popular route, (Miami - Washington, D.C. Reagan-National), can usually be booked for $96.

  • 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 $389). 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
Springfield
Rockville
Tysons
Gaithersburg
Silver Spring
Fredericksburg
Linthicum Heights
Laurel
Falls Church
Woodbridge
Easton
Herndon
Bowie
Reston
National Harbor
Oxon Hill
Gettysburg

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

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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 febrero 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$30Average$126FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$44Average$149FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$57Average$200FlexibilityNo cancel feeOn-time62%
DeltaCheapest$98Average$283FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$117Average$263FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$118Average$328FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$131Average$319FlexibilityNo cancel feeOn-time71%
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