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Cheap flights from Buffalo to Key Largo from C$ 131

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 4/7. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — MIA
19 Jul — 26 Jul1
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 19 June 2026.

Sat 4/75:20 p.m.
BUF
-
MIA
1 stop5h 49m
American Airlines
Tue 7/74:45 p.m.
MIA
-
BUF
1 stop7h 08m
American Airlines
Deal found 18/6C$ 263
Sun 13/95:45 p.m.
BUF
-
MIA
1 stop5h 05m
Southwest
Fri 18/97:00 a.m.
MIA
-
BUF
1 stop4h 50m
Southwest
Deal found 15/6C$ 264
Mon 15/67:40 p.m.
BUF
-
MIA
1 stop5h 09m
American Airlines
Tue 16/612:30 p.m.
MIA
-
BUF
1 stop8h 32m
American Airlines
Deal found 14/6C$ 270
Sat 10/1012:20 p.m.
BUF
-
MIA
1 stop9h 50m
Southwest
Sat 17/106:40 a.m.
MIA
-
BUF
1 stop7h 30m
Southwest
Deal found 18/6C$ 271
Thu 25/62:50 p.m.
BUF
-
MIA
1 stop8h 25m
Southwest
Mon 29/65:25 a.m.
MIA
-
BUF
2 stops8h 50m
Southwest
Deal found 17/6C$ 280
Sun 27/99:40 a.m.
BUF
-
MIA
2 stops13h 10m
Southwest
Sun 4/105:55 a.m.
MIA
-
BUF
2 stops8h 15m
Southwest
Deal found 15/6C$ 287
Tue 29/91:16 p.m.
BUF
-
MIA
1 stop7h 48m
Frontier
Wed 30/96:45 a.m.
MIA
-
BUF
1 stop5h 36m
Frontier
Deal found 18/6C$ 295
Tue 25/811:35 a.m.
BUF
-
MIA
1 stop11h 28m
Frontier
Wed 26/88:10 a.m.
MIA
-
BUF
1 stop5h 45m
Frontier
Deal found 14/6C$ 297
Thu 16/75:20 a.m.
BUF
-
MIA
1 stop7h 39m
American Airlines
Thu 23/79:20 a.m.
MIA
-
BUF
1 stop6h 24m
American Airlines
Deal found 16/6C$ 301
Wed 29/76:05 a.m.
BUF
-
MIA
1 stop8h 19m
Delta
Tue 4/811:28 a.m.
MIA
-
BUF
1 stop6h 02m
Delta
Deal found 15/6C$ 306
Fri 7/82:48 p.m.
BUF
-
MIA
1 stop23h 05m
Frontier
Sat 15/83:07 p.m.
MIA
-
BUF
1 stop19h 22m
Frontier
Deal found 17/6C$ 318

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 19 June 2026.

Round-trip from

C$ 263

One-way from

C$ 131

Popular in

March

Cheapest in

September

Average price

C$ 419
American Airlines
  • American Airlines
  • 4/7-7/7
  • 2 total stops
  • 12h 57m total
  • Buffalo to Key Largo
Search Deals
American Airlines
  • American Airlines
  • 4/7
  • 1 total stop
  • 7h 32m total
  • Buffalo to Key Largo
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (C$ 96 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 June 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 19 June 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

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Sat 10/10

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

1 stop9h 50m

Miami

Sat 17/10

6:40 a.m.-2:10 p.m.

1 stop7h 30m

C$ 271

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Fri 31/7

12:40 p.m.-10:10 p.m.

1 stop9h 30m

Miami

Wed 5/8

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

1 stop4h 55m

C$ 271

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Tue 7/7

12:50 p.m.-9:55 p.m.

2 stops9h 05m

Miami

Sat 11/7

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

1 stop7h 00m

C$ 397

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Tue 21/7

6:00 a.m.-3:50 p.m.

2 stops9h 50m

Miami

Wed 22/7

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

1 stop6h 00m

C$ 398

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Thu 16/7

7:35 a.m.-4:25 p.m.

2 stops8h 50m

Miami

Tue 21/7

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

1 stop6h 00m

C$ 407

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Sun 6/12

7:00 a.m.-2:55 p.m.

1 stop7h 55m

Miami

Thu 10/12

1:00 p.m.-10:37 p.m.

2 stops9h 37m

C$ 422
Quickest round-trip

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Wed 1/7

4:20 p.m.-10:10 p.m.

1 stop5h 50m

Miami

Mon 6/7

5:25 a.m.-12:05 p.m.

2 stops6h 40m

C$ 448

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Fri 13/11

11:00 a.m.-10:00 p.m.

2 stops11h 00m

Miami

Sun 22/11

6:05 a.m.-12:00 p.m.

1 stop5h 55m

C$ 456

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Sat 14/11

1:15 p.m.-9:01 p.m.

1 stop7h 46m

Miami

Sat 21/11

8:45 a.m.-2:59 p.m.

1 stop6h 14m

C$ 472

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

Fri 18/9

6:30 a.m.-9:55 p.m.

2 stops15h 25m

Miami

Tue 29/9

7:10 a.m.-3:15 p.m.

2 stops8h 05m

C$ 528

Flights are sorted by cheapest round-trip flights first.

Deals found on 16/6

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

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 19 June 2026.

It’s optimal to fly from Buffalo to Key Largo in the evening. By choosing this option you can save up to 57% 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 19 June 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
7.9
Good
4,239 reviews
Check prices

Food

7.0

Entertainment

7.5

Crew

8.6

Overall

7.9

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.
Southwest
7.9
Good
4,239 reviews
Southwest
7.9
Good
4,239 reviews
Check prices

Food

7.0

Entertainment

7.5

Crew

8.6

Overall

7.9

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.
Delta
7.8
Good
8,419 reviews
Southwest
7.9
Good
4,239 reviews
Check prices

Food

7.0

Entertainment

7.5

Crew

8.6

Overall

7.9

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.
United Airlines
7.4
Good
9,860 reviews
Southwest
7.9
Good
4,239 reviews
Check prices

Food

7.0

Entertainment

7.5

Crew

8.6

Overall

7.9

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.
American Airlines
7.1
Good
11,703 reviews
Southwest
7.9
Good
4,239 reviews
Check prices

Food

7.0

Entertainment

7.5

Crew

8.6

Overall

7.9

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.
Frontier
5.6
Fair
2,879 reviews
Southwest
7.9
Good
4,239 reviews
Check prices

Food

7.0

Entertainment

7.5

Crew

8.6

Overall

7.9

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

La Tracimeldamarcos,Jun 2026

LAX - SLC

The second flight was not as comfortable as the first as we had to change planes to what seemed to be a slightly older aircraft. The seats weren’t as comfortable as the other plane. But it wasn’t bad.

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 fly from Buffalo to Key Largo in about 9h 50m. 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$ 101. Users have also found prices from C$ 108 and C$ 140 on Southwest and American Airlines, respectively.

  • 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.

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 19 June 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapestC$ 134AverageC$ 419FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
DeltaCheapestC$ 152AverageC$ 337FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
FrontierCheapestC$ 162AverageC$ 269FlexibilityNo cancel feeOn-time62%
Search Frontier flights
JetBlueCheapestC$ 193AverageC$ 371FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
SouthwestCheapestC$ 224AverageC$ 393FlexibilityNo cancel feeOn-time63%
Search Southwest flights
United AirlinesCheapestC$ 404AverageC$ 586FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

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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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