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Key Largo

$72+ 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 10/31. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — MIA
oct. 15 — oct. 221
mié. 10/15
mié. 10/22
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

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 septiembre 15, 2025.

Round-trip from

$159
(Southwest)

One-way from

$72
(Cheapflightsfares)

Popular in

December

Cheapest in

September

Average price

$216
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. 11% potential increase in price ($40 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 September 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 septiembre 15, 2025.

This Priceline deal was found by Cheapflights users on 9/13. 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.
vie. 10/175:24 pmBUF - MIA
1 stop12h 55mFrontier
lun. 10/205:15 amMIA - BUF
1 stop6h 04mFrontier
Deal found 9/13$159
This Frontier deal was found by Cheapflights users on 9/13. 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.
vie. 10/175:24 pmBUF - MIA
1 stop12h 55mFrontier
vie. 10/246:00 amMIA - BUF
1 stop10h 29mFrontier
Deal found 9/13$160
This Frontier deal was found by Cheapflights users on 9/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/105:24 pmBUF - MIA
1 stop12h 55mFrontier
dom. 10/195:15 amMIA - BUF
1 stop6h 04mFrontier
Deal found 9/14$161
This Justfly.com deal was found by Cheapflights users on 9/14. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/186:52 pmBUF - MIA
1 stop21h 11mFrontier
mié. 10/227:55 pmMIA - BUF
1 stop15h 24mFrontier
Deal found 9/14$163
This Southwest deal was found by Cheapflights users on 9/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/35:25 pmBUF - MIA
1 stop4h 40mSouthwest
sáb. 10/116:00 amMIA - BUF
1 stop10h 20mSouthwest
Deal found 9/14$164
This Southwest deal was found by Cheapflights users on 9/13. 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.
sáb. 10/252:15 pmBUF - MIA
2 stops7h 35mSouthwest
mié. 10/2910:30 amMIA - BUF
2 stops11h 45mSouthwest
Deal found 9/13$169
This Southwest deal was found by Cheapflights users on 9/15. 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.
lun. 10/137:55 amBUF - MIA
1 stop10h 55mSouthwest
lun. 10/206:25 amMIA - BUF
1 stop10h 10mSouthwest
Deal found 9/15$170
This Frontier deal was found by Cheapflights users on 9/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/312:17 pmBUF - MIA
1 stop11h 55mFrontier
dom. 10/55:30 amMIA - BUF
1 stop5h 52mFrontier
Deal found 9/14$171
This Southwest deal was found by Cheapflights users on 9/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/98:05 amBUF - MIA
1 stop8h 05mSouthwest
mar. 12/165:10 pmMIA - BUF
1 stop4h 50mSouthwest
Deal found 9/14$177
This Frontier deal was found by Cheapflights users on 9/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/1812:17 pmBUF - MIA
1 stop11h 55mFrontier
dom. 9/216:00 amMIA - BUF
1 stop10h 02mFrontier
Deal found 9/14$182
This Frontier deal was found by Cheapflights users on 9/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/132:42 pmBUF - MIA
1 stop9h 52mFrontier
dom. 11/165:01 amMIA - BUF
2 stops13h 03mFrontier
Deal found 9/14$187
This Frontier deal was found by Cheapflights users on 9/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/3112:29 pmBUF - MIA
1 stop5h 38mFrontier
dom. 11/99:51 amMIA - BUF
2 stops10h 18mFrontier
Deal found 9/14$188

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 septiembre 15, 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

vie. 10/3

5:25 pm-10:05 pm

1 stop4h 40m

Miami

sáb. 10/11

6:50 am-4:20 pm

2 stops9h 30m

$164

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

sáb. 10/4

4:00 pm-9:50 pm

1 stop5h 50m

Miami

sáb. 10/11

6:50 am-4:20 pm

2 stops9h 30m

$164

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

dom. 9/21

12:17 pm-12:12 am

1 stop11h 55m

Miami

dom. 9/28

6:00 am-4:02 pm

1 stop10h 02m

$193

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

dom. 10/19

12:15 pm-12:34 am

1 stop12h 19m

Miami

lun. 10/20

5:15 am-11:19 am

1 stop6h 04m

$195

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

mié. 11/26

6:00 am-12:35 pm

1 stop6h 35m

Miami

mié. 11/26

6:35 pm-11:35 pm

1 stop5h 00m

$199

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

mar. 11/4

7:00 am-2:17 pm

1 stop7h 17m

Miami

mié. 11/5

4:35 pm-11:39 pm

1 stop7h 04m

$217

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

mié. 11/5

11:15 am-6:33 pm

1 stop7h 18m

Miami

vie. 11/7

6:00 am-11:01 am

1 stop5h 01m

$217

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

jue. 10/30

6:03 am-2:03 pm

1 stop8h 00m

Miami

mar. 11/11

5:15 pm-11:59 pm

1 stop6h 44m

$217

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

mié. 10/1

6:00 am-11:01 am

1 stop5h 01m

Miami

mié. 10/1

3:29 pm-11:14 pm

1 stop7h 45m

$217

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

lun. 10/20

6:03 am-2:03 pm

1 stop8h 00m

Miami

jue. 10/23

3:10 pm-10:57 pm

1 stop7h 47m

$217

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 21 results
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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 September 12, 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 $232). 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 septiembre 15, 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 septiembre 15, 2025.
Get a feel of what it's like to fly with Southwest, Delta, and American 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
4,242 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Entertainment

7.5

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
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Entertainment

7.5

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
7,954 reviews
Southwest
8.0
Very good
4,242 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Entertainment

7.5

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
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Entertainment

7.5

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
2,912 reviews
Southwest
8.0
Very good
4,242 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Entertainment

7.5

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
Frontier
5.8
Fair
3,172 reviews
Southwest
8.0
Very good
4,242 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Entertainment

7.5

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 4h 40m. Fly via Southwest or Frontier 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 $149. While the most popular route (Buffalo - Miami) can be booked for $144 on average, our data indicates $469 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 $232). 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

Browse thousands of different options on Cheapflights for your next trip

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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 septiembre 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$108Average$230FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$146Average$289FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$156Average$331FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$158Average$360FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$191Average$403FlexibilityNo cancel feeOn-time69%
DeltaCheapest$209Average$328FlexibilityNo cancel feeOn-timeN/A

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