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Cheap flights from Buffalo to Key Largo from C$ 86

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 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — MIA
7 May — 14 May1
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 7 April 2026.

Tue 28/41:56 p.m.
BUF
-
MIA
1 stop10h 53m
Frontier
Fri 8/58:10 a.m.
MIA
-
BUF
1 stop27h 23m
Frontier
Deal found 4/4C$ 263
Sat 25/41:11 p.m.
BUF
-
MIA
1 stop11h 38m
Frontier
Sun 3/55:05 a.m.
MIA
-
BUF
1 stop6h 32m
Frontier
Deal found 5/4C$ 265
Sat 18/41:11 p.m.
BUF
-
MIA
1 stop11h 38m
Multiple Airlines
Mon 4/511:06 a.m.
MIA
-
BUF
1 stop23h 35m
Multiple Airlines
Deal found 4/4C$ 266
Sun 3/512:32 p.m.
BUF
-
MIA
1 stop9h 59m
Multiple Airlines
Sun 10/59:19 p.m.
MIA
-
BUF
2 stops37h 22m
Multiple Airlines
Deal found 5/4C$ 269
Tue 28/41:56 p.m.
BUF
-
MIA
1 stop10h 53m
Multiple Airlines
Wed 6/52:25 p.m.
MIA
-
BUF
2 stops28h 21m
Multiple Airlines
Deal found 4/4C$ 273
Thu 16/412:35 p.m.
BUF
-
MIA
1 stop12h 14m
Frontier
Sun 19/46:00 a.m.
MIA
-
BUF
1 stop9h 13m
Frontier
Deal found 2/4C$ 280
Sun 26/48:18 p.m.
BUF
-
MIA
2 stops21h 39m
Multiple Airlines
Thu 30/43:54 p.m.
MIA
-
BUF
1 stop19h 29m
Multiple Airlines
Deal found 5/4C$ 283
Sun 26/412:07 p.m.
BUF
-
MIA
1 stop12h 42m
Frontier
Thu 30/49:21 p.m.
MIA
-
BUF
2 stops38h 52m
Frontier
Deal found 5/4C$ 288
Thu 23/412:35 p.m.
BUF
-
MIA
1 stop5h 44m
Frontier
Sat 2/55:05 a.m.
MIA
-
BUF
1 stop7h 08m
Frontier
Deal found 7/4C$ 292
Mon 20/412:32 p.m.
BUF
-
MIA
1 stop12h 17m
Frontier
Wed 22/411:10 a.m.
MIA
-
BUF
2 stops23h 24m
Frontier
Deal found 6/4C$ 294

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 7 April 2026.

Round-trip from

C$ 263

One-way from

C$ 86

Popular in

March

Cheapest in

September

Average price

C$ 440
Frontier
  • Frontier
  • 28/4-8/5
  • 2 total stops
  • 38h 16m total
  • Buffalo to Key Largo
Search Deals
3/5
  • 3/5
  • 1 total stop
  • 9h 59m total
  • Buffalo to Key Largo
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (C$ 88 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 7 April 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
Quickest round-trip

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Tue 28/4

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

1 stop5h 14m

Miami

Tue 5/5

11:22 a.m.-4:50 p.m.

1 stop5h 28m

C$ 330

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Tue 5/5

11:00 a.m.-8:40 p.m.

2 stops9h 40m

Miami

Tue 12/5

7:20 a.m.-12:15 p.m.

1 stop4h 55m

C$ 337

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Sat 2/5

5:00 p.m.-11:15 p.m.

1 stop6h 15m

Miami

Sat 9/5

8:25 a.m.-6:00 p.m.

2 stops9h 35m

C$ 337

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Sat 22/8

7:50 a.m.-3:20 p.m.

1 stop7h 30m

Miami

Sat 29/8

6:30 a.m.-12:05 p.m.

1 stop5h 35m

C$ 344

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Wed 22/4

3:33 p.m.-10:52 p.m.

1 stop7h 19m

Miami

Wed 29/4

1:16 p.m.-6:35 p.m.

1 stop5h 19m

C$ 351

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Sun 19/4

6:00 a.m.-12:26 p.m.

1 stop6h 26m

Miami

Wed 29/4

10:29 a.m.-6:35 p.m.

1 stop8h 06m

C$ 365

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Thu 23/4

7:00 a.m.-2:25 p.m.

1 stop7h 25m

Miami

Wed 29/4

4:43 p.m.-11:37 p.m.

1 stop6h 54m

C$ 365

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Thu 4/6

12:18 p.m.-12:47 a.m.

1 stop12h 29m

Miami

Sun 7/6

7:00 p.m.-12:02 a.m.

1 stop5h 02m

C$ 372

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Tue 21/4

7:00 a.m.-2:25 p.m.

1 stop7h 25m

Miami

Wed 22/4

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

1 stop5h 24m

C$ 398

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Wed 13/5

1:10 p.m.-9:55 p.m.

2 stops8h 45m

Miami

Tue 19/5

7:00 a.m.-2:35 p.m.

2 stops7h 35m

C$ 450

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/4

Showing 1-10 of 20 resultsSorted by cheapest first
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 3 April 2026.

The best time to book flights from Buffalo to Key Largo is 90 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, June is the cheapest month in which you can book a flight from Buffalo to Key Largo (average of C$ 131). Flying from Buffalo to Key Largo in December is currently the most expensive (average of C$ 221). 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 7 April 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.

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

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 7 April 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
4,338 reviews
Check prices

Comfort

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,338 reviews
Southwest
8.0
Very good
4,338 reviews
Check prices

Comfort

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Delta
7.9
Good
8,387 reviews
Southwest
8.0
Very good
4,338 reviews
Check prices

Comfort

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
United Airlines
7.4
Good
9,548 reviews
Southwest
8.0
Very good
4,338 reviews
Check prices

Comfort

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,546 reviews
Southwest
8.0
Very good
4,338 reviews
Check prices

Comfort

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Frontier
5.7
Fair
3,000 reviews
Southwest
8.0
Very good
4,338 reviews
Check prices

Comfort

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

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 and Southwest fly from Buffalo to Key Largo in about 5h 14m. The time it takes to get you to your destination can typically vary by up to 4h 26m. 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$ 100. Users have also found prices from C$ 106 and C$ 130 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: American Airlines (78%), Republic Airways (78%), Qatar Airways (75%).

  • 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, June is the cheapest month in which you can book a flight from Buffalo to Key Largo (average of C$ 131). Flying from Buffalo to Key Largo in December is currently the most expensive (average of C$ 221). 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 7 April 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapestC$ 132AverageC$ 413FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
DeltaCheapestC$ 150AverageC$ 333FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
FrontierCheapestC$ 159AverageC$ 265FlexibilityNo cancel feeOn-time62%
Search Frontier flights
United AirlinesCheapestC$ 185AverageC$ 579FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
JetBlueCheapestC$ 188AverageC$ 357FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
SouthwestCheapestC$ 220AverageC$ 375FlexibilityNo 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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