Cheap flights from Buffalo to Key Largo

BUF — MIA
29 Nov — 6 Dec1
1 adult
1 adult, Economy, 0 bags

Find flight deals from Buffalo to Key Largo

Popular in

March

Cheapest in

September

Average price

C$ 441
Highest demand for flights based on searches. 7% potential increase in price (C$ 50 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease (C$ 11 potential savings vs. average RT price).
Average for round-trip flights in October 2026

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 65% on the cost of your flight, compared to a flight in the morning.

Reviews of airlines servicing Key Largo

See what other customers who have flown with Southwest,Delta, andAmerican 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.

Comfort

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.4

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Patricia,Oct 2026

DAL - TPA

I love flying southwest, Both flights were packed full full - so not room for all carry one and bags had to be checked but still good flights.

Comfort

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.4

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Patricia,Oct 2026

DAL - TPA

I love flying southwest, Both flights were packed full full - so not room for all carry one and bags had to be checked but still good flights.

Comfort

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.4

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Patricia,Oct 2026

DAL - TPA

I love flying southwest, Both flights were packed full full - so not room for all carry one and bags had to be checked but still good flights.

Comfort

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.4

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Patricia,Oct 2026

DAL - TPA

I love flying southwest, Both flights were packed full full - so not room for all carry one and bags had to be checked but still good flights.

Comfort

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.4

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Patricia,Oct 2026

DAL - TPA

I love flying southwest, Both flights were packed full full - so not room for all carry one and bags had to be checked but still good flights.

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 5 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?

  • 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$ 107 and C$ 144 on Southwest and American Airlines, respectively.

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

    On average you can expect to pay C$ 1,190 for a flight from Buffalo to Key Largo. The cheapest flight overall is C$ 459 while the most popular route, (Buffalo - Miami) is currently priced at C$ 345.

  • 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 5 airlines flying from Buffalo to Key Largo

AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapestC$ 141AverageC$ 438FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
DeltaCheapestC$ 150AverageC$ 323FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
FrontierCheapestC$ 168AverageC$ 286FlexibilityNo cancel feeOn-time62%
Search Frontier flights
JetBlueCheapestC$ 209AverageC$ 420FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
SouthwestCheapestC$ 246AverageC$ 449FlexibilityNo cancel feeOn-time63%
Search Southwest flights

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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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