Key Largo

$93+ 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 7/4. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — MIA
Jul 18 — Jul 251
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Cheapflights Tip: The best prices from Buffalo to Key Largo are usually found in September or October, booked 81 days in advance, depart on a Tuesday or Wednesday and return on a Monday

Cheap 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 18, 2026.

This American Airlines deal was found by Cheapflights users on 6/18. 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.
Sat 7/45:20 pm
BUF
-
MIA
1 stop5h 49m
American Airlines
Tue 7/74:45 pm
MIA
-
BUF
1 stop7h 08m
American Airlines
Deal found 6/18$186
This Southwest deal was found by Cheapflights users on 6/16. 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.
Sun 9/135:45 pm
BUF
-
MIA
1 stop5h 05m
Southwest
Thu 9/174:50 pm
MIA
-
BUF
1 stop5h 50m
Southwest
Deal found 6/16$187
This American Airlines deal was found by Cheapflights users on 6/14. 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.
Mon 6/157:40 pm
BUF
-
MIA
1 stop5h 09m
American Airlines
Tue 6/1612:30 pm
MIA
-
BUF
1 stop8h 32m
American Airlines
Deal found 6/14$191
This Southwest deal was found by Cheapflights users on 6/18. 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.
Sat 10/1012:20 pm
BUF
-
MIA
1 stop9h 50m
Southwest
Sat 10/176:40 am
MIA
-
BUF
1 stop7h 30m
Southwest
Deal found 6/18$192
This Southwest deal was found by Cheapflights users on 6/17. 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 6/252:50 pm
BUF
-
MIA
1 stop8h 25m
Southwest
Mon 6/295:25 am
MIA
-
BUF
2 stops8h 50m
Southwest
Deal found 6/17$198
This Kiwi.com deal was found by Cheapflights users on 6/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/172:48 pm
BUF
-
MIA
1 stop8h 17m
Frontier
Fri 7/245:28 pm
MIA
-
BUF
1 stop18h 05m
Frontier
Deal found 6/17$202
This Southwest deal was found by Cheapflights users on 6/15. 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 9/279:40 am
BUF
-
MIA
2 stops13h 10m
Southwest
Sun 10/45:55 am
MIA
-
BUF
2 stops8h 15m
Southwest
Deal found 6/15$203
This Kiwi.com deal was found by Cheapflights users on 6/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1911:36 am
BUF
-
MIA
1 stop11h 29m
Frontier
Sun 8/238:10 am
MIA
-
BUF
1 stop26h 19m
Frontier
Deal found 6/17$205
This Kiwi.com deal was found by Cheapflights users on 6/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1811:36 am
BUF
-
MIA
1 stop11h 29m
Frontier
Tue 8/255:28 pm
MIA
-
BUF
1 stop17h 01m
Frontier
Deal found 6/17$206
This Southwest deal was found by Cheapflights users on 6/13. 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.
Sun 9/135:45 pm
BUF
-
MIA
1 stop5h 05m
Southwest
Fri 9/187:15 am
MIA
-
BUF
1 stop8h 00m
Southwest
Deal found 6/13$207
This Frontier deal was found by Cheapflights users on 6/17. 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.
Tue 9/291:16 pm
BUF
-
MIA
1 stop7h 48m
Frontier
Wed 9/306:45 am
MIA
-
BUF
1 stop5h 36m
Frontier
Deal found 6/17$209

Find 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 18, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$186
(American Airlines)

One-way from

$93
(American Airlines)

Popular in

March

Cheapest in

September

Average price

$297
Provider with most accurate pricing for Buffalo-Miami flight deals.
Provider most trusted by Cheapflights users for Buffalo-Miami flights.
From Buffalo to Key Largo
One-way flight from Buffalo to Key Largo
Highest demand for flights based on searches. 14% potential increase in price ($48 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Average for round-trip flights in June 2026

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 18, 2026.
Use the filters below to find and compare flights from Buffalo to Key Largo that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Wed 7/1

4:20 pm-10:10 pm

1 stop5h 50m

Miami

Sat 7/4

6:50 am-11:40 am

1 stop4h 50m

$187
Quickest round-trip

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Sun 9/13

6:45 am-11:30 am

1 stop4h 45m

Miami

Mon 9/14

7:00 am-11:50 am

1 stop4h 50m

$187

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Sun 9/13

5:45 pm-10:50 pm

1 stop5h 05m

Miami

Fri 9/18

7:15 am-3:15 pm

1 stop8h 00m

$207

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Sun 10/11

6:16 am-2:34 pm

1 stop8h 18m

Miami

Thu 10/15

8:05 am-3:27 pm

1 stop7h 22m

$217

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Thu 8/27

7:19 pm-1:07 am

1 stop5h 48m

Miami

Fri 9/4

3:59 pm-11:59 pm

1 stop8h 00m

$217

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Sat 12/5

9:55 am-4:33 pm

1 stop6h 38m

Miami

Sat 12/12

7:30 am-2:59 pm

1 stop7h 29m

$227

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Sat 10/10

3:45 pm-10:10 pm

2 stops6h 25m

Miami

Sat 10/17

6:40 am-11:40 am

1 stop5h 00m

$288

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Sun 12/6

7:00 am-2:55 pm

1 stop7h 55m

Miami

Thu 12/10

1:00 pm-10:37 pm

2 stops9h 37m

$299

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Wed 7/1

12:50 pm-9:50 pm

2 stops9h 00m

Miami

Wed 7/15

1:45 pm-8:00 pm

1 stop6h 15m

$307

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Fri 8/7

4:35 pm-10:05 pm

1 stop5h 30m

Miami

Mon 8/10

6:20 am-11:10 am

1 stop4h 50m

$313

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/16

Showing 1-10 of 22 resultsSorted by cheapest first
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3

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

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 18, 2026.

It’s typically best to fly out from Buffalo to Key Largo in the afternoon. Doing so could potentially save you 48% on the flight price compared to flying in the morning, which is usually more expensive.

How much does it cost to fly round-trip from Buffalo to Key Largo?

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 June 13, 2026.

Travelers seeking maximum savings on their Buffalo to Key Largo flight should consider departing on Tuesday at noon when fares are most often at their lowest. Sunday 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 June 18, 2026.
Get a feel of what it's like to fly with Southwest,Delta, andAmerican 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.

Entertainment

7.5

Boarding

8.1

Overall

7.9

Comfort

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.

Entertainment

7.5

Boarding

8.1

Overall

7.9

Comfort

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.

Entertainment

7.5

Boarding

8.1

Overall

7.9

Comfort

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.

Entertainment

7.5

Boarding

8.1

Overall

7.9

Comfort

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.

Entertainment

7.5

Boarding

8.1

Overall

7.9

Comfort

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.

Entertainment

7.5

Boarding

8.1

Overall

7.9

Comfort

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.

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 5h 50m. Fly via Southwest or Delta 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 airlines to fly from Buffalo to Key Largo one-way?

    To fly one-way, consider booking your trip with JetBlue, which is currently one of the cheapest options available, starting at $58. Frontier flights start at $72 while deals on Southwest start at $79 one-way.

  • 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.

See more FAQs

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Alternative routes for Buffalo to Key Largo

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

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 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$73Average$233FlexibilityNo cancel feeOn-time62%
DeltaCheapest$128Average$352FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$151Average$303FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$156Average$328FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$163Average$373FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$187Average$297FlexibilityNo cancel feeOn-time69%

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