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Cheap flights from Buffalo to Key Largo from C$ 110

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 14/11. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — MIA
29 Nov — 6 Dec1
1 adult
1 adult, Economy, 0 bags

Find 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 30 October 2025.

Thu 13/112:42 p.m.BUF - MIA
1 stop9h 52mFrontier
Mon 17/1112:52 p.m.MIA - BUF
1 stop8h 16mFrontier
Deal found 30/10C$ 225
Wed 3/121:50 p.m.BUF - MIA
1 stop6h 35mSouthwest
Fri 5/126:55 a.m.MIA - BUF
1 stop4h 35mSouthwest
Deal found 30/10C$ 233
Sun 7/127:55 a.m.BUF - MIA
1 stop9h 55mSouthwest
Thu 11/127:40 a.m.MIA - BUF
1 stop5h 45mSouthwest
Deal found 29/10C$ 240
Thu 20/119:30 a.m.BUF - MIA
1 stop6h 40mSouthwest
Mon 24/116:20 a.m.MIA - BUF
1 stop5h 40mSouthwest
Deal found 28/10C$ 276
Fri 14/112:42 p.m.BUF - MIA
1 stop9h 52mFrontier
Mon 17/1112:52 p.m.MIA - BUF
1 stop8h 16mFrontier
Deal found 28/10C$ 297
Fri 14/112:42 p.m.BUF - MIA
1 stop9h 52mFrontier
Sat 22/118:49 p.m.MIA - BUF
1 stop12h 09mFrontier
Deal found 30/10C$ 304
Sat 15/115:05 p.m.BUF - MIA
1 stop4h 45mSouthwest
Sun 23/116:20 a.m.MIA - BUF
1 stop5h 40mSouthwest
Deal found 29/10C$ 310
Thu 13/118:54 p.m.BUF - MIA
2 stops37h 04mMultiple Airlines
Mon 17/1112:52 p.m.MIA - BUF
1 stop8h 16mMultiple Airlines
Deal found 30/10C$ 320
Fri 14/112:42 p.m.BUF - MIA
1 stop9h 52mFrontier
Sun 16/115:01 a.m.MIA - BUF
1 stop8h 46mFrontier
Deal found 29/10C$ 324
Mon 1/1210:21 a.m.BUF - MIA
1 stop6h 48mFrontier
Fri 5/125:30 a.m.MIA - BUF
1 stop5h 15mFrontier
Deal found 29/10C$ 327

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 30 October 2025.

Round-trip from

C$ 233

One-way from

C$ 110

Popular in

April

Cheapest in

September

Average price

C$ 359
Southwest
  • Southwest
  • 17/1-25/1
  • 2 total stops
  • 11h 15m total
  • Buffalo to Key Largo
Search Deals
Frontier
  • Frontier
  • 14/11
  • 1 total stop
  • 9h 52m total
  • Buffalo to Key Largo
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (C$ 91 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 17 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 629,999 searches. Data last updated 30 October 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

Wed 7/1

1:20 p.m.-8:05 p.m.

1 stop6h 45m

Miami

Sun 11/1

6:45 a.m.-12:05 p.m.

1 stop5h 20m

C$ 233

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Sun 7/12

12:45 p.m.-11:45 p.m.

1 stop11h 00m

Miami

Sat 13/12

6:50 a.m.-2:10 p.m.

1 stop7h 20m

C$ 240

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Wed 28/1

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

2 stops9h 10m

Miami

Sat 31/1

11:17 a.m.-5:40 p.m.

1 stop6h 23m

C$ 296

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Tue 24/3

2:30 p.m.-8:50 p.m.

1 stop6h 20m

Miami

Thu 26/3

6:00 a.m.-11:16 a.m.

1 stop5h 16m

C$ 303

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Sat 21/2

2:00 p.m.-9:02 p.m.

1 stop7h 02m

Miami

Fri 27/2

8:45 a.m.-5:26 p.m.

1 stop8h 41m

C$ 303

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Fri 28/11

5:45 p.m.-11:25 p.m.

1 stop5h 40m

Miami

Fri 5/12

6:55 a.m.-11:30 a.m.

1 stop4h 35m

C$ 324

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Fri 2/1

2:45 p.m.-10:55 p.m.

1 stop8h 10m

Miami

Sat 10/1

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

1 stop5h 00m

C$ 331

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Thu 12/3

7:00 a.m.-1:00 p.m.

1 stop6h 00m

Miami

Thu 19/3

6:35 p.m.-11:46 p.m.

1 stop5h 11m

C$ 338

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Wed 25/2

6:05 a.m.-12:05 p.m.

1 stop6h 00m

Miami

Sun 1/3

5:55 a.m.-11:55 a.m.

1 stop6h 00m

C$ 346

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Sat 28/2

1:25 p.m.-10:30 p.m.

1 stop9h 05m

Miami

Sun 8/3

6:25 a.m.-3:40 p.m.

1 stop9h 15m

C$ 363

Flights are sorted by cheapest round-trip flights first.

Deals found on 30/10

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 24 October 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 C$ 99). Flying from Buffalo to Key Largo in August is currently the most expensive (average of C$ 190). 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 30 October 2025.

It’s optimal to fly from Buffalo to Key Largo at noon. By choosing this option you can save up to 34% on the cost of your flight, compared to a flight in the morning.

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 16 December 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. Thursday 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 30 October 2025.
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
4,243 reviews
Check prices

Food

7.0

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

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
4,243 reviews
Southwest
8.0
Very good
4,243 reviews
Check prices

Food

7.0

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

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
7.9
Good
7,998 reviews
Southwest
8.0
Very good
4,243 reviews
Check prices

Food

7.0

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

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
8,998 reviews
Southwest
8.0
Very good
4,243 reviews
Check prices

Food

7.0

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

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
11,035 reviews
Southwest
8.0
Very good
4,243 reviews
Check prices

Food

7.0

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

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
3,122 reviews
Southwest
8.0
Very good
4,243 reviews
Check prices

Food

7.0

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

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?

    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, United Airlines, and Delta fly from Buffalo to Key Largo in about 6h 20m. The time it takes to get you to your destination can typically vary by up to 2h 50m. 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.

  • 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 C$ 99). Flying from Buffalo to Key Largo in August is currently the most expensive (average of C$ 190). 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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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 30 October 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapestC$ 117AverageC$ 349FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
FrontierCheapestC$ 163AverageC$ 295FlexibilityNo cancel feeOn-time62%
Search Frontier flights
DeltaCheapestC$ 179AverageC$ 348FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
JetBlueCheapestC$ 194AverageC$ 326FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
SouthwestCheapestC$ 231AverageC$ 523FlexibilityNo cancel feeOn-time63%
Search Southwest flights
United AirlinesCheapestC$ 242AverageC$ 664FlexibilityNo cancel feeOn-time69%
Search United Airlines 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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