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Cheap flights from Buffalo to Key Largo from C$ 121

BUF — MIA
23 Sep — 30 Sep1
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

Sat 24/101:44 p.m. -
1 stop7h 45m
Sat 31/105:05 a.m. -
1 stop7h 13m
Deal found 23/8C$ 238
Mon 19/101:44 p.m. -
1 stop8h 06m
Fri 23/105:15 a.m. -
1 stop7h 44m
Deal found 22/8C$ 242
Wed 16/91:40 p.m. -
1 stop6h 58m
Fri 25/95:34 p.m. -
1 stop19h 16m
Deal found 19/8C$ 256
Wed 16/91:40 p.m. -
1 stop6h 58m
Sun 27/99:43 p.m. -
1 stop15h 12m
Deal found 19/8C$ 259
Sat 19/91:40 p.m. -
1 stop6h 58m
Sat 26/95:22 a.m. -
1 stop7h 28m
Deal found 22/8C$ 270
Mon 14/91:40 p.m. -
1 stop6h 53m
Mon 28/95:32 a.m. -
1 stop7h 23m
Deal found 19/8C$ 273
Mon 14/91:40 p.m. -
1 stop6h 53m
Fri 25/95:34 p.m. -
1 stop19h 16m
Deal found 19/8C$ 275
Mon 14/91:40 p.m. -
1 stop6h 53m
Sun 27/99:43 p.m. -
1 stop15h 12m
Deal found 19/8C$ 277
Wed 23/91:40 p.m. -
1 stop6h 58m
Mon 5/105:32 a.m. -
1 stop7h 23m
Deal found 19/8C$ 285
Fri 25/91:40 p.m. -
1 stop6h 53m
Mon 28/95:32 a.m. -
1 stop7h 23m
Deal found 19/8C$ 286
Sat 3/101:45 p.m. -
1 stop6h 53m
Sat 10/104:05 p.m. -
1 stop19h 53m
Deal found 19/8C$ 288

Find flight deals from Buffalo to Key Largo

Round-trip from

C$ 238

One-way from

C$ 121

Popular in

March

Cheapest in

September

Average price

C$ 398
Frontier
  • Frontier
  • 24/10-31/10
  • 2 total stops
  • 14h 58m total
  • Buffalo to Key Largo
Search Deals
Frontier
  • Frontier
  • 21/10
  • 1 total stop
  • 7h 45m total
  • Buffalo to Key Largo
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (C$ 82 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
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Cheapflights Fare Finder

 
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 Buffalo - MIA Miami

BUFMIA

Buffalo

Thu 17/9

6:59 p.m.-12:55 a.m.

1 stop5h 56m

Miami

Tue 22/9

6:42 p.m.-11:53 p.m.

1 stop5h 11m

C$ 408

BuffaloMiami

BUF Buffalo - MIA Miami

BUFMIA

Buffalo

Sat 19/9

7:00 a.m.-3:27 p.m.

1 stop8h 27m

Miami

Thu 24/9

6:42 p.m.-11:53 p.m.

1 stop5h 11m

C$ 408

BuffaloMiami

BUF Buffalo - MIA Miami

BUFMIA

Buffalo

Mon 14/9

6:59 p.m.-12:55 a.m.

1 stop5h 56m

Miami

Thu 24/9

6:42 p.m.-11:53 p.m.

1 stop5h 11m

C$ 408

BuffaloMiami

BUF Buffalo - MIA Miami

BUFMIA

Buffalo

Wed 20/1

9:00 a.m.-5:10 p.m.

1 stop8h 10m

Miami

Wed 27/1

7:30 a.m.-1:24 p.m.

1 stop5h 54m

C$ 409

BuffaloMiami

BUF Buffalo - MIA Miami

BUFMIA

Buffalo

Tue 29/9

11:06 a.m.-7:03 p.m.

1 stop7h 57m

Miami

Wed 30/9

11:29 a.m.-7:15 p.m.

1 stop7h 46m

C$ 409

BuffaloMiami

BUF Buffalo - MIA Miami

BUFMIA

Buffalo

Thu 21/1

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

1 stop7h 55m

Miami

Mon 1/2

3:35 p.m.-11:50 p.m.

1 stop8h 15m

C$ 409

BuffaloMiami

BUF Buffalo - MIA Miami

BUFMIA

Buffalo

Sat 5/9

10:50 a.m.-7:20 p.m.

2 stops8h 30m

Miami

Sat 12/9

6:30 a.m.-4:45 p.m.

2 stops10h 15m

C$ 423

BuffaloMiami

BUF Buffalo - MIA Miami

BUFMIA

Buffalo

Thu 17/9

6:59 p.m.-12:55 a.m.

1 stop5h 56m

Miami

Fri 25/9

3:23 p.m.-12:12 a.m.

1 stop8h 49m

C$ 425

BuffaloMiami

BUF Buffalo - MIA Miami

BUFMIA

Buffalo

Sat 3/10

12:30 p.m.-10:05 p.m.

2 stops9h 35m

Miami

Mon 5/10

7:10 a.m.-2:10 p.m.

2 stops7h 00m

C$ 443

BuffaloMiami

BUF Buffalo - MIA Miami

BUFMIA

Buffalo

Fri 4/9

10:00 a.m.-6:53 p.m.

1 stop8h 53m

Miami

Sat 12/9

1:55 p.m.-9:15 p.m.

1 stop7h 20m

C$ 450

Flights are sorted by cheapest round-trip flights first.

Deals found on 21/8

Showing 1-10 of 21 resultsSorted by cheapest first
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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

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?

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?

Airfare is below average for this route at the moment.
Buffalo to Key Largo flights typically cost between C$ 305 and C$ 452 in October.
The cheapest round-trip price found within the last 5 days was C$ 238 on Frontier (24 Oct-31 Oct).

Reviews of airlines servicing Key Largo

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
4,212 reviews
Check prices

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.
Southwest
8.0
Very good
4,212 reviews
Southwest
8.0
Very good
4,212 reviews
Check prices

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.
Delta
7.8
Good
8,517 reviews
Southwest
8.0
Very good
4,212 reviews
Check prices

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.
United Airlines
7.4
Good
10,115 reviews
Southwest
8.0
Very good
4,212 reviews
Check prices

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.
American Airlines
7.1
Good
11,981 reviews
Southwest
8.0
Very good
4,212 reviews
Check prices

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.
Frontier
5.6
Fair
2,653 reviews
Southwest
8.0
Very good
4,212 reviews
Check prices

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Overall

8.0

Boarding

8.1

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.

Related info for your journey

  • 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 2 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 fly from Buffalo to Key Largo in about 5h 56m. 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$ 99. Users have also found prices from C$ 105 and C$ 136 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

Top 6 airlines flying from Buffalo to Key Largo

AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapestC$ 131AverageC$ 411FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
DeltaCheapestC$ 148AverageC$ 330FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
FrontierCheapestC$ 158AverageC$ 267FlexibilityNo cancel feeOn-time62%
Search Frontier flights
JetBlueCheapestC$ 189AverageC$ 376FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
SouthwestCheapestC$ 238AverageC$ 425FlexibilityNo cancel feeOn-time63%
Search Southwest flights
United AirlinesCheapestC$ 394AverageC$ 572FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

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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