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Cheap flights from Buffalo to Key Largo from C$ 102

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 31/12. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — MIA
17 Dec — 24 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 17 November 2025.

Sun 14/123:40 p.m.BUF - MIA
1 stop7h 45mSouthwest
Wed 24/127:40 a.m.MIA - BUF
1 stop5h 45mSouthwest
Deal found 15/11C$ 236
Wed 3/124:50 p.m.BUF - MIA
1 stop5h 00mSouthwest
Wed 10/127:10 a.m.MIA - BUF
1 stop4h 50mSouthwest
Deal found 15/11C$ 241
Fri 5/1211:30 a.m.BUF - MIA
1 stop23h 42mMultiple Airlines
Sun 7/125:30 a.m.MIA - BUF
1 stop5h 40mMultiple Airlines
Deal found 16/11C$ 244
Mon 15/121:50 p.m.BUF - MIA
1 stop6h 35mSouthwest
Mon 22/126:30 a.m.MIA - BUF
1 stop5h 30mSouthwest
Deal found 15/11C$ 264
Sun 7/123:18 p.m.BUF - MIA
2 stops32h 00mFrontier
Sun 14/125:30 a.m.MIA - BUF
1 stop5h 40mFrontier
Deal found 16/11C$ 279
Mon 15/1211:40 a.m.BUF - MIA
1 stop13h 06mMultiple Airlines
Mon 22/125:30 a.m.MIA - BUF
2 stops15h 38mMultiple Airlines
Deal found 15/11C$ 282
Sun 21/127:58 p.m.BUF - MIA
2 stops28h 53mFrontier
Thu 8/17:09 p.m.MIA - BUF
1 stop16h 51mFrontier
Deal found 15/11C$ 288
Wed 31/125:44 p.m.BUF - MIA
1 stop7h 03mFrontier
Wed 7/15:07 p.m.MIA - BUF
2 stops15h 06mFrontier
Deal found 16/11C$ 292
Wed 31/125:44 p.m.BUF - MIA
1 stop7h 03mMultiple Airlines
Tue 6/19:59 p.m.MIA - BUF
2 stops34h 14mMultiple Airlines
Deal found 16/11C$ 293
Fri 5/1211:30 a.m.BUF - MIA
2 stops21h 52mFrontier
Sun 7/125:30 a.m.MIA - BUF
1 stop5h 40mFrontier
Deal found 16/11C$ 297

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 17 November 2025.

Round-trip from

C$ 205

One-way from

C$ 102

Popular in

December

Cheapest in

September

Average price

C$ 449
Frontier
  • Frontier
  • 30/1-6/2
  • 2 total stops
  • 18h 22m total
  • Buffalo to Key Largo
Search Deals
Frontier
  • Frontier
  • 31/12
  • 1 total stop
  • 7h 03m total
  • Buffalo to Key Largo
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (C$ 96 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 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 17 November 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

Sun 11/1

4:05 p.m.-10:25 p.m.

1 stop6h 20m

Miami

Sun 18/1

7:55 a.m.-3:10 p.m.

1 stop7h 15m

C$ 223

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Wed 3/12

4:50 p.m.-9:50 p.m.

1 stop5h 00m

Miami

Wed 10/12

7:10 a.m.-12:00 p.m.

1 stop4h 50m

C$ 241

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Mon 15/12

1:50 p.m.-8:25 p.m.

1 stop6h 35m

Miami

Mon 22/12

6:30 a.m.-12:00 p.m.

1 stop5h 30m

C$ 264

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Wed 28/1

6:00 a.m.-12:54 p.m.

1 stop6h 54m

Miami

Wed 11/2

7:39 a.m.-2:58 p.m.

1 stop7h 19m

C$ 304

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Tue 27/1

12:25 p.m.-5:50 p.m.

1 stop5h 25m

Miami

Fri 6/2

5:36 p.m.-12:16 a.m.

1 stop6h 40m

C$ 304

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Tue 27/1

12:25 p.m.-5:50 p.m.

1 stop5h 25m

Miami

Thu 5/2

4:32 p.m.-11:28 p.m.

1 stop6h 56m

C$ 304

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Tue 27/1

2:56 p.m.-9:10 p.m.

1 stop6h 14m

Miami

Sat 7/2

7:15 a.m.-1:09 p.m.

1 stop5h 54m

C$ 304

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Wed 28/1

7:00 a.m.-2:29 p.m.

1 stop7h 29m

Miami

Mon 9/2

5:50 a.m.-11:19 a.m.

1 stop5h 29m

C$ 304

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Wed 28/1

2:56 p.m.-9:10 p.m.

1 stop6h 14m

Miami

Thu 5/2

7:40 a.m.-2:58 p.m.

1 stop7h 18m

C$ 304

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Tue 27/1

12:25 p.m.-5:50 p.m.

1 stop5h 25m

Miami

Tue 10/2

3:37 p.m.-12:16 a.m.

1 stop8h 39m

C$ 304

Flights are sorted by cheapest round-trip flights first.

Deals found on 16/11

Showing 1-10 of 22 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 14 November 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$ 100). Flying from Buffalo to Key Largo in December is currently the most expensive (average of C$ 202). 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 17 November 2025.

It’s optimal to fly from Buffalo to Key Largo at noon. By choosing this option you can save up to 32% 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 Sunday 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 17 November 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
4,244 reviews
Check prices

Boarding

8.1

Entertainment

7.5

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.0

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
4,244 reviews
Southwest
8.0
Very good
4,244 reviews
Check prices

Boarding

8.1

Entertainment

7.5

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.0

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
8,007 reviews
Southwest
8.0
Very good
4,244 reviews
Check prices

Boarding

8.1

Entertainment

7.5

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.0

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
9,015 reviews
Southwest
8.0
Very good
4,244 reviews
Check prices

Boarding

8.1

Entertainment

7.5

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.0

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
11,050 reviews
Southwest
8.0
Very good
4,244 reviews
Check prices

Boarding

8.1

Entertainment

7.5

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.0

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
3,106 reviews
Southwest
8.0
Very good
4,244 reviews
Check prices

Boarding

8.1

Entertainment

7.5

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.0

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 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 34m. 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 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: Delta (100%), Republic Airways (100%), American Airlines (50%).

  • 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$ 100). Flying from Buffalo to Key Largo in December is currently the most expensive (average of C$ 202). 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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Alternative routes for Buffalo to Key Largo

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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 17 November 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapestC$ 117AverageC$ 353FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
FrontierCheapestC$ 164AverageC$ 297FlexibilityNo cancel feeOn-time62%
Search Frontier flights
DeltaCheapestC$ 180AverageC$ 350FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
JetBlueCheapestC$ 194AverageC$ 326FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
SouthwestCheapestC$ 232AverageC$ 525FlexibilityNo cancel feeOn-time63%
Search Southwest flights
United AirlinesCheapestC$ 243AverageC$ 667FlexibilityNo 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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