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Key Largo

$84+ 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 12/14. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — MIA
Nov 15 — Nov 221
Sat 11/15
Sat 11/22
1 adult, Economy
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Cheapflights Tip: The best prices from Buffalo to Key Largo are usually found in September or July, booked 31 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

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 October 16, 2025.

This Frontier deal was found by Cheapflights users on 10/16. 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.
Fri 11/142:42 pmBUF - MIA
1 stop9h 52mFrontier
Sun 11/165:01 amMIA - BUF
1 stop8h 46mFrontier
Deal found 10/16$156
This Southwest deal was found by Cheapflights users on 10/15. 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.
Thu 12/43:40 pmBUF - MIA
1 stop5h 05mSouthwest
Sun 12/76:20 amMIA - BUF
1 stop5h 40mSouthwest
Deal found 10/15$167
This Booking.com deal was found by Cheapflights users on 10/15. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/92:42 pmBUF - MIA
1 stop9h 52mFrontier
Sun 11/165:01 amMIA - BUF
1 stop8h 46mFrontier
Deal found 10/15$170
This Southwest deal was found by Cheapflights users on 10/16. 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 12/28:05 amBUF - MIA
1 stop8h 05mSouthwest
Thu 12/46:55 amMIA - BUF
2 stops7h 25mSouthwest
Deal found 10/16$172
This Southwest deal was found by Cheapflights users on 10/15. 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.
Wed 12/174:50 pmBUF - MIA
1 stop5h 00mSouthwest
Sun 12/216:30 amMIA - BUF
1 stop5h 30mSouthwest
Deal found 10/15$173
This American Airlines deal was found by Cheapflights users on 10/14. 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 12/103:37 pmBUF - MIA
1 stop7h 31mAmerican Airlines
Sat 12/138:04 pmMIA - BUF
Nonstop3h 25mAmerican Airlines
Deal found 10/14$179
This Frontier deal was found by Cheapflights users on 10/15. 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.
Fri 11/142:42 pmBUF - MIA
1 stop9h 52mFrontier
Mon 11/175:05 amMIA - BUF
1 stop8h 32mFrontier
Deal found 10/15$182
This Southwest deal was found by Cheapflights users on 10/15. 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.
Sun 12/146:00 amBUF - MIA
1 stop7h 35mSouthwest
Fri 12/196:00 amMIA - BUF
1 stop8h 05mSouthwest
Deal found 10/15$183
This Southwest deal was found by Cheapflights users on 10/16. 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.
Fri 12/1212:45 pmBUF - MIA
1 stop11h 00mSouthwest
Sat 12/207:30 amMIA - BUF
1 stop8h 45mSouthwest
Deal found 10/16$184
This Frontier deal was found by Cheapflights users on 10/16. 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.
Thu 11/132:42 pmBUF - MIA
1 stop9h 52mFrontier
Sun 11/165:01 amMIA - BUF
1 stop8h 46mFrontier
Deal found 10/16$188

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 October 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$156
(Frontier)

One-way from

$84
(Southwest)

Popular in

December

Cheapest in

September

Average price

$257
Provider with most accurate pricing for Buffalo-Miami flight deals.
Search Deals
Provider most trusted by Cheapflights users for Buffalo-Miami flights.
Search Deals
From Buffalo to Key Largo
Search Deals
One-way flight from Buffalo to Key Largo
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($40 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

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 October 16, 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

Sun 12/14

6:00 am-1:35 pm

1 stop7h 35m

Miami

Fri 12/19

6:00 am-2:05 pm

1 stop8h 05m

$183

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Fri 12/12

12:45 pm-11:45 pm

1 stop11h 00m

Miami

Sat 12/20

7:30 am-4:15 pm

1 stop8h 45m

$184

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Wed 11/19

4:50 pm-9:50 pm

1 stop5h 00m

Miami

Tue 11/25

6:15 am-11:50 am

1 stop5h 35m

$198

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Thu 11/13

2:42 pm-12:34 am

1 stop9h 52m

Miami

Sun 11/16

5:01 am-1:47 pm

1 stop8h 46m

$209

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Wed 10/29

7:00 am-2:50 pm

1 stop7h 50m

Miami

Wed 11/5

12:51 pm-6:46 pm

1 stop5h 55m

$212

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Fri 12/5

6:25 pm-12:46 am

1 stop6h 21m

Miami

Sat 12/13

6:00 am-11:05 am

1 stop5h 05m

$217

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Wed 11/12

12:05 pm-5:18 pm

1 stop5h 13m

Miami

Tue 11/18

4:52 pm-11:50 pm

1 stop6h 58m

$217

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Wed 11/12

12:57 pm-5:31 pm

1 stop4h 34m

Miami

Mon 11/17

7:00 pm-11:26 pm

1 stop4h 26m

$229

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Sat 1/3

6:10 pm-11:45 pm

1 stop5h 35m

Miami

Sun 1/11

6:30 am-11:55 am

1 stop5h 25m

$233

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Fri 11/28

3:40 pm-11:25 pm

1 stop7h 45m

Miami

Tue 12/2

1:05 pm-8:40 pm

1 stop7h 35m

$237

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/15

Showing 1-10 of 22 results
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2
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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 October 10, 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, January is the cheapest month in which you can book a flight from Buffalo to Key Largo (average of $71). Flying from Buffalo to Key Largo in August is currently the most expensive (average of $136). 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 October 16, 2025.

It’s typically best to fly out from Buffalo to Key Largo at noon. Doing so could potentially save you 41% on the flight price compared to flying in the morning, which is usually more expensive.

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 mornings when fares are most often at their lowest. Friday at noon 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 October 16, 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
4,241 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Overall

8.0

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,241 reviews
Southwest
8.0
Very good
4,241 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Overall

8.0

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,984 reviews
Southwest
8.0
Very good
4,241 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Overall

8.0

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,982 reviews
Southwest
8.0
Very good
4,241 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Overall

8.0

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
11,043 reviews
Southwest
8.0
Very good
4,241 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Overall

8.0

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
JetBlue
7.2
Good
2,908 reviews
Southwest
8.0
Very good
4,241 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Overall

8.0

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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.

  • How long is the flight from Buffalo to Key Largo?

    There are many flights that can get you from Buffalo to Key Largo in 7h 35m. Fly via Southwest, Frontier, or United Airlines to get the fastest option. Airlines will cover a distance of 1187 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Looking at all options, your cheapest flight can be booked for $78. While the most popular route (Buffalo - Miami) can be booked for $167 on average, our data indicates $369 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, January is the cheapest month in which you can book a flight from Buffalo to Key Largo (average of $71). Flying from Buffalo to Key Largo in August is currently the most expensive (average of $136). 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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See prices for flight routes from nearby airports that may be better suited for you.
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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 October 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$110Average$239FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$146Average$291FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$156Average$322FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$158Average$356FlexibilityNo cancel feeOn-time71%
DeltaCheapest$189Average$328FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$191Average$390FlexibilityNo cancel feeOn-time69%

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