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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
24 Mar — 31 Mar1
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 22 February 2026.

Sun 15/312:45 p.m.
BUF
-
MIA
1 stop12h 02m
Frontier
Thu 19/35:05 a.m.
MIA
-
BUF
1 stop7h 00m
Frontier
Deal found 18/2C$ 237
Sun 22/312:45 p.m.
BUF
-
MIA
1 stop7h 22m
Multiple Airlines
Fri 27/35:05 a.m.
MIA
-
BUF
1 stop7h 00m
Multiple Airlines
Deal found 19/2C$ 238
Sun 22/312:45 p.m.
BUF
-
MIA
1 stop12h 02m
Frontier
Fri 27/35:05 a.m.
MIA
-
BUF
1 stop7h 00m
Frontier
Deal found 19/2C$ 241
Fri 10/44:00 p.m.
BUF
-
MIA
1 stop7h 00m
Southwest
Mon 20/46:25 p.m.
MIA
-
BUF
1 stop4h 55m
Southwest
Deal found 21/2C$ 242
Sun 19/412:07 p.m.
BUF
-
MIA
1 stop5h 50m
Frontier
Thu 23/45:05 a.m.
MIA
-
BUF
1 stop6h 35m
Frontier
Deal found 20/2C$ 246
Mon 13/46:00 a.m.
BUF
-
MIA
2 stops7h 10m
Southwest
Thu 16/411:40 a.m.
MIA
-
BUF
1 stop6h 30m
Southwest
Deal found 19/2C$ 249
Tue 24/34:15 p.m.
BUF
-
MIA
1 stop5h 25m
Southwest
Tue 31/312:40 p.m.
MIA
-
BUF
1 stop6h 40m
Southwest
Deal found 20/2C$ 256
Fri 10/411:25 a.m.
BUF
-
MIA
1 stop11h 25m
Southwest
Sat 18/47:00 a.m.
MIA
-
BUF
1 stop11h 00m
Southwest
Deal found 19/2C$ 257
Sat 21/36:08 p.m.
BUF
-
MIA
1 stop6h 44m
Delta
Wed 25/39:25 a.m.
MIA
-
BUF
1 stop7h 26m
Delta
Deal found 18/2C$ 259
Fri 24/412:18 p.m.
BUF
-
MIA
1 stop5h 39m
Frontier
Sat 2/55:05 a.m.
MIA
-
BUF
1 stop7h 08m
Frontier
Deal found 19/2C$ 260
Tue 17/34:15 p.m.
BUF
-
MIA
1 stop5h 25m
Southwest
Tue 24/36:10 a.m.
MIA
-
BUF
1 stop9h 50m
Southwest
Deal found 19/2C$ 263
Thu 19/312:05 p.m.
BUF
-
MIA
1 stop11h 25m
Southwest
Tue 24/36:10 a.m.
MIA
-
BUF
1 stop9h 50m
Southwest
Deal found 21/2C$ 271

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 22 February 2026.

Round-trip from

C$ 237

One-way from

C$ 104

Popular in

February

Cheapest in

September

Average price

C$ 460
Frontier
  • Frontier
  • 15/3-19/3
  • 2 total stops
  • 19h 02m total
  • Buffalo to Key Largo
Search Deals
Southwest
  • Southwest
  • 11/4
  • 1 total stop
  • 6h 15m 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$ 9 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 22 February 2026.
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 24/3

4:40 p.m.-9:45 p.m.

1 stop5h 05m

Miami

Tue 31/3

12:40 p.m.-7:20 p.m.

1 stop6h 40m

C$ 256

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Fri 24/4

11:25 a.m.-10:50 p.m.

1 stop11h 25m

Miami

Sat 2/5

7:00 a.m.-6:00 p.m.

1 stop11h 00m

C$ 257

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Tue 28/4

6:00 a.m.-12:11 p.m.

1 stop6h 11m

Miami

Tue 5/5

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

1 stop5h 01m

C$ 295

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Sun 19/4

7:40 p.m.-12:54 a.m.

1 stop5h 14m

Miami

Wed 22/4

10:29 a.m.-3:53 p.m.

1 stop5h 24m

C$ 297

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Fri 8/5

6:00 a.m.-1:10 p.m.

2 stops7h 10m

Miami

Tue 12/5

4:50 p.m.-10:15 p.m.

1 stop5h 25m

C$ 331

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Sat 28/2

11:52 a.m.-6:54 p.m.

1 stop7h 02m

Miami

Sat 7/3

7:00 a.m.-12:36 p.m.

1 stop5h 36m

C$ 331

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Sun 1/3

6:45 p.m.-12:53 a.m.

1 stop6h 08m

Miami

Fri 6/3

7:00 a.m.-2:08 p.m.

1 stop7h 08m

C$ 331

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Wed 25/2

12:20 p.m.-10:00 p.m.

2 stops9h 40m

Miami

Wed 4/3

7:15 a.m.-12:30 p.m.

1 stop5h 15m

C$ 338

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Fri 8/5

7:40 p.m.-12:47 a.m.

1 stop5h 07m

Miami

Wed 13/5

12:40 p.m.-6:51 p.m.

1 stop6h 11m

C$ 339

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Tue 3/3

2:58 p.m.-11:20 p.m.

1 stop8h 22m

Miami

Mon 9/3

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

1 stop6h 34m

C$ 387

Flights are sorted by cheapest round-trip flights first.

Deals found on 21/2

Showing 1-10 of 20 results
1
2

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$ 218). 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 22 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 22 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
4,299 reviews
Check prices

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,299 reviews
Southwest
8.0
Very good
4,299 reviews
Check prices

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,241 reviews
Southwest
8.0
Very good
4,299 reviews
Check prices

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,341 reviews
Southwest
8.0
Very good
4,299 reviews
Check prices

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,338 reviews
Southwest
8.0
Very good
4,299 reviews
Check prices

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Frontier
5.7
Fair
3,045 reviews
Southwest
8.0
Very good
4,299 reviews
Check prices

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

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 Southwest and Delta fly from Buffalo to Key Largo in about 5h 05m. The time it takes to get you to your destination can typically vary by up to 1h 06m. The distance between Buffalo and Key Largo is about 1910 km. Both multi-stop and direct flights can be found to your destination and back.

  • 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$ 105 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$ 218). 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 22 February 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapestC$ 114AverageC$ 298FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
FrontierCheapestC$ 133AverageC$ 297FlexibilityNo cancel feeOn-time62%
Search Frontier flights
DeltaCheapestC$ 148AverageC$ 328FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
JetBlueCheapestC$ 187AverageC$ 311FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
United AirlinesCheapestC$ 190AverageC$ 617FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
SouthwestCheapestC$ 217AverageC$ 423FlexibilityNo 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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