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Key Largo

$79+ Cheap flights from Buffalo (BUF) 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 8/2. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — MIA
Jul 5 — Jul 121
Sat 7/5
Sat 7/12
1 adult, Economy
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Cheapflights Tip: The best prices from Buffalo to Key Largo are usually found in September or June, booked 31 days in advance, depart on a Monday or Wednesday and return on a Tuesday

Cheap flight deals from Buffalo to Key Largo

Keep the following information in mind while searching for Buffalo to Key Largo flight deals. Data was last updated June 30, 2025.

Round-trip from

$164
(Southwest)

One-way from

$79
(Southwest)

Popular in

December

Cheapest in

September

Average price

$276
From Buffalo to Key Largo
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One-way flight from Buffalo to Key Largo
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Highest demand for flights based on searches. 8% potential increase in price ($31 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Buffalo to Key Largo

Cheapest flights from Buffalo to Key Largo
Explore the most affordable flight options available from Buffalo to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 30, 2025.

This Southwest deal was found by Cheapflights users on 6/29. 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 7/296:15 amBUF - MIA
1 stop4h 55mSouthwest
Tue 8/56:55 amMIA - BUF
2 stops8h 15mSouthwest
Deal found 6/29$164
This American Airlines deal was found by Cheapflights users on 6/28. 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.
Wed 8/132:34 pmBUF - MIA
1 stop7h 01mAmerican Airlines
Wed 8/202:40 pmMIA - BUF
1 stop7h 26mAmerican Airlines
Deal found 6/28$169
This Priceline deal was found by Cheapflights users on 6/28. 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.
Fri 8/224:55 pmBUF - MIA
1 stop13h 35mFrontier
Mon 8/256:00 amMIA - BUF
1 stop5h 38mFrontier
Deal found 6/28$189
This Delta deal was found by Cheapflights users on 6/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/247:30 pmBUF - MIA
1 stop5h 22mDelta
Mon 10/278:45 amMIA - BUF
1 stop6h 14mDelta
Deal found 6/30$217
This United Airlines deal was found by Cheapflights users on 6/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/36:00 amBUF - MIA
2 stops9h 10mUnited Airlines
Sat 7/510:51 amMIA - BUF
2 stops8h 05mUnited Airlines
Deal found 6/29$237

Cheapflights Fare Finder

Customize your flight search to find flights from Buffalo 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 June 30, 2025.
Use the filters below to find and compare flights from Buffalo to Key Largo that are best for you.

Fly from

Buffalo

Fly to

Key Largo

Route

Depart

Return

Price

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Tue 7/29

6:15 am-11:10 am

1 stop4h 55m

Miami

Tue 8/5

6:55 am-3:10 pm

2 stops8h 15m

$164

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Wed 8/13

2:34 pm-9:35 pm

1 stop7h 01m

Miami

Wed 8/20

2:40 pm-10:06 pm

1 stop7h 26m

$169

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Fri 8/22

4:55 pm-6:30 am

1 stop13h 35m

Miami

Mon 8/25

6:00 am-11:38 am

1 stop5h 38m

$189

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Tue 7/15

5:03 pm-12:47 am

1 stop7h 44m

Miami

Fri 7/18

6:15 pm-11:44 pm

1 stop5h 29m

$217

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Thu 7/3

7:00 am-3:10 pm

1 stop8h 10m

Miami

Sat 7/5

10:51 am-6:28 pm

1 stop7h 37m

$227

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Sat 8/2

4:30 pm-11:35 pm

1 stop7h 05m

$79

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Tue 7/22

6:08 am-11:18 am

1 stop5h 10m

$80

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Sun 9/7

6:17 pm-9:38 pm

1 stop27h 21m

$103

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Thu 9/4

6:04 am-2:01 pm

1 stop7h 57m

$109

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/29

Best time to book a flight from Buffalo to Key Largo

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

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

Use this chart to determine the optimal time to book a round-trip flight from Buffalo to Key Largo. Price data was last updated on June 27, 2025.

The best time to book flights from Buffalo to Key Largo is 31 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, September is the cheapest month in which you can book a flight from Buffalo to Key Largo (average of $231). Flying from Buffalo 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 BUF to KE9?

Find hourly flight availability from Buffalo 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 June 30, 2025.

When flying from Buffalo to Key Largo, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

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

Travelers seeking maximum savings on their Buffalo to Key Largo flight should consider departing on Monday at noon when fares are most often at their lowest. Tuesday mornings 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 June 30, 2025.
Get a feel of what it's like to fly with Southwest, Delta, and United Airlines from Buffalo to Key Largo by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,278 reviews

Crew

8.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.6

Food

7.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Southwest
8.0
Very good
4,278 reviews
Southwest
8.0
Very good
4,278 reviews

Crew

8.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.6

Food

7.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Delta
8.0
Very good
7,973 reviews
Southwest
8.0
Very good
4,278 reviews

Crew

8.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.6

Food

7.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
United Airlines
7.4
Good
8,852 reviews
Southwest
8.0
Very good
4,278 reviews

Crew

8.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.6

Food

7.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,278 reviews

Crew

8.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.6

Food

7.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Frontier
5.9
Fair
3,290 reviews
Southwest
8.0
Very good
4,278 reviews

Crew

8.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.6

Food

7.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Related info for your journey

Find useful and relevant information for your journey from Buffalo 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 Buffalo to Key Largo?

    For a flight from Buffalo to Key Largo, you will be flying from Buffalo. Buffalo (BUF) is just 8.3 mi from the center of the city. Buffalo is the only Buffalo airport and it handles 0 outbound flights to Key Largo per day. 6 airlines have flights to Key Largo from Buffalo on a regular basis.

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

    To fly one-way, consider booking your trip with Southwest, which is currently one of the cheapest options available, starting at $79. American Airlines flights start at $80 while deals on Frontier start at $103 one-way.

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

    Looking at all options, your cheapest flight can be booked for $437. While the most popular route (Buffalo - Miami) can be booked for $158 on average our data indicates $638 when flying from Buffalo to Key Largo.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Buffalo 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 Buffalo to Key Largo?

    Currently, September is the cheapest month in which you can book a flight from Buffalo to Key Largo (average of $231). Flying from Buffalo 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.

See more FAQs

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Top 6 airlines flying from Buffalo to Key Largo

Discover the top 6 airlines that operate flights from Buffalo 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 June 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$110Average$240FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$144Average$288FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$156Average$392FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$158Average$361FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$191Average$400FlexibilityNo cancel feeOn-time69%
DeltaCheapest$216Average$328FlexibilityNo cancel feeOn-timeN/A

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