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Cheap flights from Buffalo to Key Largo from C$ 104

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 11/4. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — MIA
29 Mar — 5 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Buffalo to Key Largo

Enter your travel dates to find the best prices.

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 27 February 2026.

Mon 23/311:59 a.m.
BUF
-
MIA
1 stop22h 35m
Frontier
Fri 27/35:05 a.m.
MIA
-
BUF
1 stop7h 00m
Frontier
Deal found 25/2C$ 229
Tue 14/44:00 p.m.
BUF
-
MIA
1 stop5h 10m
Southwest
Thu 16/411:40 a.m.
MIA
-
BUF
1 stop6h 30m
Southwest
Deal found 26/2C$ 231
Sat 11/45:00 p.m.
BUF
-
MIA
1 stop6h 15m
Southwest
Sat 18/47:00 a.m.
MIA
-
BUF
1 stop11h 00m
Southwest
Deal found 24/2C$ 234
Thu 16/412:35 p.m.
BUF
-
MIA
1 stop12h 14m
Frontier
Sun 19/45:05 a.m.
MIA
-
BUF
1 stop6h 04m
Frontier
Deal found 23/2C$ 235
Fri 10/41:02 p.m.
BUF
-
MIA
1 stop7h 05m
Multiple Airlines
Sun 19/45:05 a.m.
MIA
-
BUF
1 stop6h 04m
Multiple Airlines
Deal found 24/2C$ 236
Wed 20/59:45 a.m.
BUF
-
MIA
1 stop4h 30m
Southwest
Sat 30/57:00 a.m.
MIA
-
BUF
1 stop11h 00m
Southwest
Deal found 25/2C$ 239
Thu 9/45:20 p.m.
BUF
-
MIA
1 stop5h 40m
Southwest
Wed 15/412:35 p.m.
MIA
-
BUF
1 stop5h 40m
Southwest
Deal found 23/2C$ 242
Thu 9/45:20 p.m.
BUF
-
MIA
1 stop5h 40m
Southwest
Sat 18/47:00 a.m.
MIA
-
BUF
1 stop11h 00m
Southwest
Deal found 24/2C$ 249
Mon 13/48:16 p.m.
BUF
-
MIA
2 stops28h 33m
Multiple Airlines
Mon 20/43:54 p.m.
MIA
-
BUF
1 stop20h 48m
Multiple Airlines
Deal found 27/2C$ 250
Fri 20/312:50 p.m.
BUF
-
MIA
1 stop11h 57m
Frontier
Sun 29/35:05 a.m.
MIA
-
BUF
1 stop7h 00m
Frontier
Deal found 25/2C$ 258
Mon 13/412:42 p.m.
BUF
-
MIA
1 stop12h 07m
Frontier
Fri 17/45:05 a.m.
MIA
-
BUF
1 stop6h 08m
Frontier
Deal found 25/2C$ 259
Sun 26/48:18 p.m.
BUF
-
MIA
1 stop15h 00m
Frontier
Thu 30/45:05 a.m.
MIA
-
BUF
1 stop7h 07m
Frontier
Deal found 27/2C$ 261

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 27 February 2026.

Round-trip from

C$ 228

One-way from

C$ 104

Popular in

February

Cheapest in

September

Average price

C$ 459
Frontier
  • Frontier
  • 21/4-25/4
  • 2 total stops
  • 18h 01m total
  • Buffalo to Key Largo
Search Deals
Frontier
  • Frontier
  • 11/4
  • 1 total stop
  • 11h 40m total
  • Buffalo to Key Largo
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (C$ 51 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
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 629,999 searches. Data last updated 27 February 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

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Mon 9/3

11:37 a.m.-6:54 p.m.

1 stop7h 17m

Miami

Thu 12/3

6:00 a.m.-11:01 a.m.

1 stop5h 01m

C$ 331

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Wed 11/3

2:59 p.m.-9:22 p.m.

1 stop6h 23m

Miami

Thu 19/3

6:00 a.m.-11:01 a.m.

1 stop5h 01m

C$ 339

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Sat 14/3

6:08 p.m.-12:52 a.m.

1 stop6h 44m

Miami

Thu 2/4

5:40 p.m.-12:14 a.m.

1 stop6h 34m

C$ 352

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Tue 10/3

11:37 a.m.-6:54 p.m.

1 stop7h 17m

Miami

Thu 19/3

6:00 a.m.-11:01 a.m.

1 stop5h 01m

C$ 373

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Mon 9/3

7:00 a.m.-2:20 p.m.

1 stop7h 20m

Miami

Mon 9/3

6:27 p.m.-11:46 p.m.

1 stop5h 19m

C$ 455

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Sat 14/3

12:25 p.m.-11:00 p.m.

2 stops10h 35m

Miami

Thu 2/4

6:15 a.m.-11:25 a.m.

1 stop5h 10m

C$ 482

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Mon 9/3

2:49 p.m.-11:59 p.m.

2 stops9h 10m

Miami

Wed 11/3

2:21 p.m.-8:46 p.m.

1 stop6h 25m

C$ 483

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Mon 9/3

2:49 p.m.-11:59 p.m.

2 stops9h 10m

Miami

Thu 12/3

9:00 a.m.-4:42 p.m.

1 stop7h 42m

C$ 483

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Sat 1/8

6:16 a.m.-2:33 p.m.

1 stop8h 17m

Miami

Sat 8/8

6:00 a.m.-11:15 a.m.

1 stop5h 15m

C$ 544

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Tue 28/4

2:54 p.m.-11:22 p.m.

2 stops8h 28m

Miami

Tue 5/5

12:10 p.m.-11:33 p.m.

2 stops11h 23m

C$ 568

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/2

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
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

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 20 February 2026.

The best time to book flights from Buffalo to Key Largo is 81 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, March is the cheapest month in which you can book a flight from Buffalo to Key Largo (average of C$ 120). Flying from Buffalo to Key Largo in December is currently the most expensive (average of C$ 217). 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 27 February 2026.

It’s optimal to fly from Buffalo to Key Largo in the evening. By choosing this option you can save up to 60% on the cost of your flight, compared to a flight in the afternoon.

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 27 February 2026.
See what other customers who have flown with Southwest,Delta, andUnited Airlines from Buffalo to Key Largo have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,303 reviews
Check prices

Boarding

8.1

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.
Southwest
8.0
Very good
4,303 reviews
Southwest
8.0
Very good
4,303 reviews
Check prices

Boarding

8.1

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.
Delta
7.9
Good
8,245 reviews
Southwest
8.0
Very good
4,303 reviews
Check prices

Boarding

8.1

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.
United Airlines
7.4
Good
9,363 reviews
Southwest
8.0
Very good
4,303 reviews
Check prices

Boarding

8.1

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.
American Airlines
7.2
Good
11,367 reviews
Southwest
8.0
Very good
4,303 reviews
Check prices

Boarding

8.1

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.
Frontier
5.7
Fair
3,041 reviews
Southwest
8.0
Very good
4,303 reviews
Check prices

Boarding

8.1

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.

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?

    Buffalo (BUF) is the airport you will fly out of if you book a flight from Buffalo to Key Largo. You should not have trouble finding flights to Key Largo from Buffalo; the airport handles an average of 0 outbound flights to Key Largo per day. You should also have plenty of airline options to choose from since 6 airlines have flights from the Buffalo airport to Key Largo. It is only a 13.4 km journey to Buffalo (BUF) from Buffalo’s city centre.

  • How popular is this Buffalo to Key Largo flight route?

    The Buffalo to Key Largo flight path was viewed by 1 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    Airlines like Delta fly from Buffalo to Key Largo in about 7h 17m. The time it takes to get you to your destination can typically vary by up to . The distance between Buffalo and Key Largo is about 1910 km.

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

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as C$ 98. Users have also found prices from C$ 104 and C$ 114 on Southwest and American Airlines, respectively.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Buffalo to Key Largo on time: Qatar Airways (82%), American Airlines (78%), Republic Airways (78%).

  • 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, March is the cheapest month in which you can book a flight from Buffalo to Key Largo (average of C$ 120). Flying from Buffalo to Key Largo in December is currently the most expensive (average of C$ 217). 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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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 629,999 searches. Data last updated 27 February 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapestC$ 114AverageC$ 295FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
FrontierCheapestC$ 132AverageC$ 293FlexibilityNo cancel feeOn-time62%
Search Frontier flights
DeltaCheapestC$ 147AverageC$ 323FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
JetBlueCheapestC$ 187AverageC$ 345FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
United AirlinesCheapestC$ 190AverageC$ 616FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
SouthwestCheapestC$ 216AverageC$ 410FlexibilityNo cancel feeOn-time63%
Search Southwest flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Buffalo to Key Largo?

Cheapflights helps you search for flights from Buffalo to Key Largo via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Buffalo to Key Largo?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Key Largo from Buffalo.

Can Cheapflights find flights from Buffalo to Key Largo with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Buffalo to Key Largo, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Buffalo to Key Largo become cheaper?

Yes, Cheapflights offers price alerts on Buffalo to Key Largo flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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