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Key Largo

$118+ Cheap flights from Greenville (GSP) to Key Largo, FL

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 8/19. Fares are subject to change and may not be available on all flights or dates of travel.
GSP — MIA
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
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Cheapflights Tip: The best prices from Greenville to Key Largo are usually found in September or November, booked 56 days in advance, depart on a Friday or Wednesday and return on a Wednesday

Cheap flight deals from Greenville to Key Largo

Keep the following information in mind while searching for Greenville to Key Largo flight deals. Data was last updated July 29, 2025.

Round-trip from

$242
(Southwest)

One-way from

$118
(Southwest)

Popular in

December

Cheapest in

September

Average price

$395
From Greenville to Key Largo
Search Deals
One-way flight from Greenville to Key Largo
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($13 potential increase over avg. RT price).
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Cheapest flight prices on average. 0% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Greenville to Key Largo

Cheapest flights from Greenville to Key Largo
Explore the most affordable flight options available from Greenville to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

This Southwest deal was found by Cheapflights users on 7/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/99:30 amGSP - MIA
1 stop7h 10mSouthwest
Sat 9/136:05 amMIA - GSP
1 stop10h 25mSouthwest
Deal found 7/29$242
This American Airlines deal was found by Cheapflights users on 7/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/45:12 amGSP - MIA
Nonstop1h 49mAmerican Airlines
Wed 11/1210:00 amMIA - GSP
1 stop9h 06mAmerican Airlines
Deal found 7/29$342

Cheapflights Fare Finder

 
Customize your flight search to find flights from Greenville to Key Largo 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 July 29, 2025.
Use the filters below to find and compare flights from Greenville to Key Largo that are best for you.

Fly from

Greenville

Fly to

Key Largo

Route

Depart

Return

Price

GreenvilleMiami

GSP - MIA

GSPMIA

Greenville

Tue 9/9

9:30 am-4:40 pm

1 stop7h 10m

Miami

Sat 9/13

6:05 am-4:30 pm

1 stop10h 25m

$242

GreenvilleMiami

GSP - MIA

GSPMIA

Greenville

Tue 11/4

5:12 am-7:01 am

Nonstop1h 49m

Miami

Wed 11/12

10:00 am-7:06 pm

1 stop9h 06m

$342

GreenvilleMiami

GSP - MIA

GSPMIA

Greenville

Tue 8/19

10:25 am-4:20 pm

1 stop5h 55m

$118

GreenvilleMiami

GSP - MIA

GSPMIA

Greenville

Wed 8/6

9:41 pm-4:53 pm

2 stops19h 12m

$135

GreenvilleMiami

GSP - MIA

GSPMIA

Greenville

Sat 9/27

11:27 am-8:46 pm

1 stop9h 19m

$172

GreenvilleMiami

GSP - MIA

GSPMIA

Greenville

Sat 8/30

5:15 pm-9:28 pm

1 stop4h 13m

$196

GreenvilleMiami

GSP - MIA

GSPMIA

Greenville

Tue 8/26

10:24 am-11:20 am

1 stop24h 56m

$237

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Best time to book a flight from Greenville to Key Largo

Have a flexible travel schedule? Discover the best time to fly to Key Largo from Greenville 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 Greenville to Key Largo

How far ahead should I book a flight from Greenville to Key Largo?

Use this chart to determine the optimal time to book a round-trip flight from Greenville to Key Largo. Price data was last updated on July 25, 2025.

Booking 56 days in advance of your planned departure date is, on average, the best time to get cheap flights from Greenville to Key Largo. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Greenville to Key Largo?

Currently, September is the cheapest month in which you can book a flight from Greenville to Key Largo (average of $232). Flying from Greenville to Key Largo in March is currently the most expensive (average of $289). 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 GSP to KE9?

Find hourly flight availability from Greenville to Key Largo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 29, 2025.

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

What is the cheapest day to fly from Greenville to Key Largo?

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

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

Reviews of airlines servicing Key Largo

Get insights into the airlines that provide service to Key Largo. 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 Key Largo. Reviews last updated July 29, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta, and United Airlines from Greenville to Key Largo 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.
Southwest
8.0
Very good
4,238 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Southwest
8.0
Very good
4,238 reviews
Southwest
8.0
Very good
4,238 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Delta
8.0
Very good
7,977 reviews
Southwest
8.0
Very good
4,238 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
United Airlines
7.4
Good
8,899 reviews
Southwest
8.0
Very good
4,238 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,238 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

Related info for your journey

Find useful and relevant information for your journey from Greenville to Key Largo. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    Greenville (GSP) is the airport you will fly out of if you book a flight from Greenville to Key Largo. You should not have trouble finding flights to Key Largo from Greenville; the airport handles an average of 2 outbound flights to Key Largo per day. You should also have plenty of airline options to choose from since 5 airlines have flights from the Greenville airport to Key Largo. It is only a 10.4 mi journey to Greenville (GSP) from Greenville’s city center.

  • What are the cheapest airlines to fly from Greenville to Key Largo one-way?

    For one-way options, check prices for Southwest. According to our data, you can fly for as low as $118. Users have also found prices from $172 and $196 on American Airlines and Delta, respectively.

  • What are the most reliable airlines from Greenville to Key Largo?

    Consider Envoy Air (71%), American Airlines (62%) or Qatar Airways (61%) when booking your flight. These represent the most reliable airlines when flying from Greenville to Key Largo.

  • What are the cheapest flights from Greenville to Key Largo?

    The cheapest flight price from Greenville to Key Largo is $79. On average you can expect to pay $494. The most popular route, (Greenville - Miami), can usually be booked for $259.

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

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

  • How can I find direct flights from Greenville to Key Largo?

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

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

    Yes. Cheapflights offers flight deals from Greenville 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.

  • What is the cheapest month to book a flight from Greenville to Key Largo?

    Currently, September is the cheapest month in which you can book a flight from Greenville to Key Largo (average of $232). Flying from Greenville to Key Largo in March is currently the most expensive (average of $289). 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.

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Top 5 airlines flying from Greenville to Key Largo

Discover the top 5 airlines that operate flights from Greenville to Key Largo. 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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$80Average$156FlexibilityNo cancel feeOn-time88%
United AirlinesCheapest$178Average$336FlexibilityNo cancel feeOn-time69%
DeltaCheapest$216Average$375FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$227Average$443FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$227Average$401FlexibilityNo cancel feeOn-time71%

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