Key Largo

$78+ Cheap flights from Buffalo (BUF) to Key Largo, FL

BUF — MIA
Oct 18 — Oct 251
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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

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Cheapflights Tip: The best prices from Buffalo to Key Largo are usually found in October or September, booked 81 days in advance, depart on a Tuesday or Sunday and return on a Monday

Cheap flight deals from Buffalo to Key Largo

Cheapest flights from Buffalo to Key Largo

Wed 10/211:44 pm -
1 stop7h 45m
Wed 10/285:05 am -
1 stop8h 10m
Deal found 9/17$157
Fri 10/301:48 pm -
1 stop27h 16m
Thu 11/510:55 pm -
1 stop14h 08m
Deal found 9/17$163
Fri 10/301:48 pm -
1 stop27h 16m
Wed 11/45:05 am -
1 stop8h 10m
Deal found 9/17$164
Mon 11/21:48 pm -
1 stop8h 01m
Wed 11/45:05 am -
1 stop8h 10m
Deal found 9/17$166
Fri 10/301:48 pm -
1 stop8h 01m
Tue 11/310:36 pm -
1 stop14h 39m
Deal found 9/13$169
Fri 10/301:48 pm -
1 stop27h 16m
Sun 11/810:55 pm -
1 stop14h 08m
Deal found 9/17$171
Fri 10/231:44 pm -
1 stop20h 31m
Tue 10/2710:36 pm -
1 stop14h 39m
Deal found 9/15$172
Mon 11/21:48 pm -
1 stop8h 01m
Sun 11/810:55 pm -
1 stop14h 08m
Deal found 9/17$174
Fri 10/231:44 pm -
1 stop8h 06m
Mon 10/265:15 am -
1 stop7h 44m
Deal found 9/16$176
Wed 10/141:44 pm -
1 stop7h 45m
Wed 10/215:05 am -
1 stop7h 54m
Deal found 9/14$177
Wed 10/282:00 pm -
1 stop7h 31m
Wed 11/45:05 am -
1 stop8h 10m
Deal found 9/13$179

Find flight deals from Buffalo to Key Largo

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$157
(Priceline)

One-way from

$78
(Super.com)

Popular in

March

Cheapest in

October

Average price

$268
Provider with most accurate pricing for Buffalo-Miami flight deals.
Provider most trusted by Cheapflights users for Buffalo-Miami flights.
From Buffalo to Key Largo
One-way flight from Buffalo to Key Largo
Highest demand for flights based on searches. 10% potential increase in price ($35 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Average for round-trip flights in September 2026

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

BuffaloMiami

BUF Buffalo - MIA Miami

BUFMIA

Buffalo

Fri 10/23

1:44 pm-9:50 pm

1 stop8h 06m

Miami

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$78

BuffaloMiami

BUF Buffalo - MIA Miami

BUFMIA

Buffalo

Sat 10/24

5:15 pm-10:10 pm

1 stop4h 55m

Miami

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$114

BuffaloMiami

BUF Buffalo - MIA Miami

BUFMIA

Buffalo

Fri 10/30

1:48 pm-9:49 pm

1 stop8h 01m

Miami

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$118

BuffaloMiami

BUF Buffalo - MIA Miami

BUFMIA

Buffalo

Tue 12/15

6:36 pm-12:58 am

1 stop6h 22m

Miami

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$146

BuffaloMiami

BUF Buffalo - MIA Miami

BUFMIA

Buffalo

Thu 11/12

5:30 pm-11:10 pm

1 stop5h 40m

Miami

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$185

BuffaloMiami

BUF Buffalo - MIA Miami

BUFMIA

Buffalo

Sat 12/12

11:24 am-6:52 pm

1 stop7h 28m

Miami

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$209
Quickest round-trip

BuffaloMiami

BUF Buffalo - MIA Miami

BUFMIA

Buffalo

Thu 10/1

5:45 pm-10:35 pm

1 stop4h 50m

Miami

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$209

BuffaloMiami

BUF Buffalo - MIA Miami

BUFMIA

Buffalo

Fri 11/13

1:48 pm-9:49 pm

1 stop8h 01m

Miami

Thu 11/19

5:15 am-1:49 pm

1 stop8h 34m

$225

BuffaloMiami

BUF Buffalo - MIA Miami

BUFMIA

Buffalo

Mon 11/9

12:00 pm-5:43 pm

1 stop5h 43m

Miami

Sat 11/14

7:20 am-2:35 pm

1 stop7h 15m

$241

BuffaloMiami

BUF Buffalo - MIA Miami

BUFMIA

Buffalo

Sun 12/6

9:05 am-2:35 pm

1 stop5h 30m

Miami

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$251

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

Showing 1-10 of 17 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

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 typically best to fly out from Buffalo to Key Largo in the afternoon. Doing so could potentially save you 43% on the flight price compared to flying in the evening, which is usually more expensive.

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 $209 and $306 in October.
The cheapest round-trip price found within the last 5 days was $157 on Frontier (Oct 21-Oct 28).

What is the cheapest day to fly from Buffalo to Key Largo?

Travelers seeking maximum savings on their Buffalo to Key Largo flight should consider departing on Tuesday at noon when fares are most often at their lowest. Sunday 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 a feel of what it's like to fly with Southwest,Delta, andAmerican Airlines from Buffalo to Key Largo by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

8.1

Food

7.0

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

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.

Boarding

8.1

Food

7.0

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

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.

Boarding

8.1

Food

7.0

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

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.

Boarding

8.1

Food

7.0

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

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.

Boarding

8.1

Food

7.0

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

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.

Boarding

8.1

Food

7.0

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

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?

    For a flight from Buffalo to Key Largo, you will be flying from Buffalo. Buffalo (BUF) is just 8.3 mi from the center of the city. Buffalo is the only Buffalo airport and it handles 0 outbound flights to Key Largo per day. 6 airlines have flights to Key Largo from Buffalo on a regular basis.

  • How long is the flight from Buffalo to Key Largo?

    There are many flights that can get you from Buffalo to Key Largo in 5h 43m. Fly via Frontier, Delta, or Southwest to get the fastest option. Airlines will cover a distance of 1187 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Buffalo to Key Largo one-way?

    To fly one-way, consider booking your trip with Southwest, which is currently one of the cheapest options available, starting at $83. Frontier flights start at $91 while deals on American Airlines start at $99 one-way.

  • What are the cheapest flights from Buffalo to Key Largo?

    Looking at all options, your cheapest flight can be booked for $128. While the most popular route (Buffalo - Miami) can be booked for $187 on average, our data indicates $411 when flying from Buffalo to Key Largo.

  • 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
FrontierCheapest$73Average$249FlexibilityNo cancel feeOn-time62%
DeltaCheapest$123Average$352FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$163Average$391FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$167Average$361FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$167Average$318FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$198Average$310FlexibilityNo cancel feeOn-time69%

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