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 $30. Southwest flights start at $78 while deals on American Airlines start at $78 one-way.

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

The most flights from KE9 to WAS are scheduled on a Thursday (24 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (2 on average).

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.

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).

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 $143. On average you can expect to pay $528. The most popular route, (Miami - Washington, D.C. Reagan-National), can usually be booked for $217.

What are the most popular airlines that fly from Key Largo to Washington, D.C.?

Consider American Airlines, United Airlines or Delta when booking your flight. These represent the most popular airlines when flying from Key Largo to Washington, D.C..

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.

Find Cheap Flights from Key Largo to Washington, D.C.

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Cheapflights Tip: The best prices from Key Largo to Washington, D.C. are usually found in January or October, booked 72 days in advance, depart on a Friday or Thursday and return on a Saturday

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

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Popular in	August
Cheapest in	January
Average price	$171

Provider with most accurate pricing for Miami-Washington, D.C. (WAS) flight deals.

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Highest demand for flights based on searches. 12% potential increase in price ($29 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).

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Average for round-trip flights in October 2026

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

Prices

Airlines

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

One of the essential ways to save on airfare from Key Largo to Washington, D.C. is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the morning could potentially save you up to 38% on airfare.

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

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

Reviews of airlines servicing Washington, D.C.

Peruse reviews from past customers who have flown with Delta,United Airlines, andJetBlue from Key Largo to Washington, D.C. to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

7.8

Good

8,624 reviews

Reviews

1 / 20

8.0

Excellent

Jorge,Aug 2026

TPA - ATL

Although I still enjoy flying Delta, the overall flying experience feels cheapened. But I guess that is true of most, if not all american carriers.

Delta

7.8

Good

8,624 reviews

Delta

7.8

Good

8,624 reviews

Reviews

1 / 20

8.0

Excellent

Jorge,Aug 2026

TPA - ATL

Although I still enjoy flying Delta, the overall flying experience feels cheapened. But I guess that is true of most, if not all american carriers.

United Airlines

7.4

Good

10,275 reviews

Delta

7.8

Good

8,624 reviews

Reviews

1 / 20

8.0

Excellent

Jorge,Aug 2026

TPA - ATL

Although I still enjoy flying Delta, the overall flying experience feels cheapened. But I guess that is true of most, if not all american carriers.

JetBlue

7.1

Good

3,038 reviews

Delta

7.8

Good

8,624 reviews

Reviews

1 / 20

8.0

Excellent

Jorge,Aug 2026

TPA - ATL

Although I still enjoy flying Delta, the overall flying experience feels cheapened. But I guess that is true of most, if not all american carriers.

American Airlines

7.0

Good

12,111 reviews

Delta

7.8

Good

8,624 reviews

Reviews

1 / 20

8.0

Excellent

Jorge,Aug 2026

TPA - ATL

Although I still enjoy flying Delta, the overall flying experience feels cheapened. But I guess that is true of most, if not all american carriers.

Frontier

5.6

Fair

2,565 reviews

Delta

7.8

Good

8,624 reviews

Reviews

1 / 20

8.0

Excellent

Jorge,Aug 2026

TPA - ATL

Although I still enjoy flying Delta, the overall flying experience feels cheapened. But I guess that is true of most, if not all american carriers.

Related info for your journey

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 $30. Southwest flights start at $78 while deals on American Airlines start at $78 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 $143. On average you can expect to pay $528. The most popular route, (Miami - Washington, D.C. Reagan-National), can usually be booked for $217.
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.

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Top 6 airlines flying from Key Largo to Washington, D.C.

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$34	Average$137	FlexibilityNo cancel fee	On-time62%
JetBlue	Cheapest$79	Average$235	FlexibilityNo cancel fee	On-time62%
Southwest	Cheapest$117	Average$326	FlexibilityNo cancel fee	On-time63%
United Airlines	Cheapest$117	Average$253	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$125	Average$304	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$134	Average$333	FlexibilityNo cancel fee	On-time71%

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

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

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

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

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Popular in

Cheapest in

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Cheapflights Insights

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

One of the essential ways to save on airfare from Key Largo to Washington, D.C. is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the morning could potentially save you up to 38% on airfare.

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

Travelers seeking maximum savings on their Key Largo to Washington, D.C. flight should consider departing on Sunday at noon when fares are most often at their lowest. Tuesday 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.

The most flights from KE9 to WAS are scheduled on a Thursday (24 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (2 on average).

Reviews of airlines servicing Washington, D.C.

Peruse reviews from past customers who have flown with Delta,United Airlines, andJetBlue from Key Largo to Washington, D.C. to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

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

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

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

How can I 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.?

Traveling to a place near Washington, D.C.?

Browse thousands of different options on Cheapflights for your next trip

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

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Complete your trip

Complete your trip to Washington, D.C. by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Key Largo to Washington, D.C. by cabin class

Find flights from Key Largo to Washington, D.C., based on your preferred cabin class, be it economy, premium economy, business, or first class.

Key Largo and Washington, D.C. flights

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Top 6 airlines flying from Key Largo to Washington, D.C.

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