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.

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).

What are the most popular airlines that fly from Harrisburg to Key Largo?

When booking a flight from Harrisburg to Key Largo, you may want to consider flying on American Airlines, United Airlines or Delta as they are the most popular for this route.

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

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

What airport do you fly from for flights from Harrisburg to Key Largo?

Harrisburg (MDT), located 8.5 mi from the city center, is the airport you fly out of when you book flights from Harrisburg to Key Largo. 4 airlines have flights from Harrisburg to Key Largo on a regular basis. Booking flights from Harrisburg to Key Largo should not be difficult; the airport handles an average of 0 outbound flights to Key Largo per day.

Can I find deals for flights from Harrisburg to Key Largo that include hotel bookings?

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

How can I find direct flights from Harrisburg to Key Largo?

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

Can I find deals for business class flights from Harrisburg to Key Largo?

Yes. Cheapflights offers flight deals from Harrisburg 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.

Find Cheap Flights from Harrisburg to Key Largo

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Find flight deals from Harrisburg to Key Largo

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Popular in	December
Cheapest in	July
Average price	$479

Provider with most accurate pricing for Harrisburg-Miami flight deals.

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Provider most trusted by Cheapflights users for Harrisburg-Miami flights.

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Highest demand for flights based on searches. 4% potential increase in price ($18 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).

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Average for round-trip flights in October 2026

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Reviews of airlines servicing Key Largo

See what other customers who have flown with Delta,United Airlines, andAmerican Airlines from Harrisburg to Key Largo have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

7.8

Good

8,634 reviews

Reviews

1 / 20

4.0

Okay

Joel,May 2026

ATL - JAX

The flight was delivered 50 minutes and taxing took what felt like 20 minutes to takeoff.

Delta

7.8

Good

8,634 reviews

Delta

7.8

Good

8,634 reviews

Reviews

1 / 20

4.0

Okay

Joel,May 2026

ATL - JAX

The flight was delivered 50 minutes and taxing took what felt like 20 minutes to takeoff.

United Airlines

7.4

Good

10,289 reviews

Delta

7.8

Good

8,634 reviews

Reviews

1 / 20

4.0

Okay

Joel,May 2026

ATL - JAX

The flight was delivered 50 minutes and taxing took what felt like 20 minutes to takeoff.

American Airlines

7.0

Good

12,129 reviews

Delta

7.8

Good

8,634 reviews

Reviews

1 / 20

4.0

Okay

Joel,May 2026

ATL - JAX

The flight was delivered 50 minutes and taxing took what felt like 20 minutes to takeoff.

Related info for your journey

What airport do you fly from for flights from Harrisburg to Key Largo?
Harrisburg (MDT), located 8.5 mi from the city center, is the airport you fly out of when you book flights from Harrisburg to Key Largo. 4 airlines have flights from Harrisburg to Key Largo on a regular basis. Booking flights from Harrisburg to Key Largo should not be difficult; the airport handles an average of 0 outbound flights to Key Largo per day.
Can I find deals for flights from Harrisburg to Key Largo that include hotel bookings?
Yes. In addition to deals on Harrisburg to Key Largo flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Harrisburg to Key Largo?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Harrisburg to Key Largo.
Can I find deals for business class flights from Harrisburg to Key Largo?
Yes. Cheapflights offers flight deals from Harrisburg 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.

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Top 4 airlines flying from Harrisburg to Key Largo

Airline	Cheapest	Average	Flexibility	On-time
Allegiant Air	Cheapest$89	Average$162	FlexibilityNo cancel fee	On-time88%
Delta	Cheapest$143	Average$415	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$258	Average$390	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$258	Average$435	FlexibilityNo cancel fee	On-time71%

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Find cheap flights from Harrisburg to Key Largo with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Harrisburg to Key Largo

Most accurate provider

Most trusted provider

Popular in

Cheapest in

Average price

Reviews of airlines servicing Key Largo

See what other customers who have flown with Delta,United Airlines, andAmerican Airlines from Harrisburg to Key Largo have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

What airport do you fly from for flights from Harrisburg to Key Largo?

Can I find deals for flights from Harrisburg to Key Largo that include hotel bookings?

How can I find direct flights from Harrisburg to Key Largo?

Can I find deals for business class flights from Harrisburg to Key Largo?

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.

Alternative routes for Harrisburg to Key Largo

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Key Largo by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Harrisburg to Key Largo by cabin class

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

Harrisburg and Key Largo flights

Browse other Harrisburg and Key Largo flight options. Last updated on October 6, 2026.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2026

Harrisburg to Key Largo flights

Consider these flights traveling from Harrisburg to Key Largo.

Top 4 airlines flying from Harrisburg to Key Largo

100% Free

Book with Flexibility

Travel Smart

Cheap flights from Harrisburg (MDT) to Key Largo, FL

Find cheap flights from Harrisburg to Key Largo with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Harrisburg to Key Largo

Most accurate provider

Most trusted provider

Popular in

Cheapest in

Average price

Reviews of airlines servicing Key Largo

See what other customers who have flown with Delta,United Airlines, andAmerican Airlines from Harrisburg to Key Largo have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

What airport do you fly from for flights from Harrisburg to Key Largo?

Can I find deals for flights from Harrisburg to Key Largo that include hotel bookings?

How can I find direct flights from Harrisburg to Key Largo?

Can I find deals for business class flights from Harrisburg to Key Largo?

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.

Alternative routes for Harrisburg to Key Largo

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Key Largo by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Harrisburg to Key Largo by cabin class

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

Harrisburg and Key Largo flights

Browse other Harrisburg and Key Largo flight options. Last updated on October 6, 2026.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2026

Harrisburg to Key Largo flights

Consider these flights traveling from Harrisburg to Key Largo.

Top 4 airlines flying from Harrisburg to Key Largo

100% Free

Book with Flexibility

Travel Smart