Key Largo

$60+ Cheap flights from Buffalo (BUF) to Key Largo, FL

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 5/27. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — MIA
may. 30 — jun. 61
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Cheapflights Tip: The best prices from Buffalo to Key Largo are usually found in September or July, booked 90 days in advance, depart on a Tuesday or Wednesday and return on a Monday

Cheap flight deals from Buffalo to Key Largo

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 abril 30, 2026.

This Kiwi.com deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 5/202:49 pm
BUF
-
MIA
1 stop7h 58m
Frontier
mié. 5/278:10 am
MIA
-
BUF
1 stop5h 44m
Frontier
Deal found 4/26$177
This Expedia deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 5/247:44 pm
BUF
-
MIA
1 stop14h 43m
Frontier
dom. 5/315:05 am
MIA
-
BUF
1 stop14h 59m
Frontier
Deal found 4/25$180
This Kiwi.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 5/272:49 pm
BUF
-
MIA
1 stop7h 58m
Frontier
mié. 6/311:23 am
MIA
-
BUF
2 stops32h 41m
Frontier
Deal found 4/27$182
This Kiwi.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/412:32 pm
BUF
-
MIA
1 stop12h 17m
Frontier
jue. 5/711:23 am
MIA
-
BUF
1 stop26h 31m
Frontier
Deal found 4/27$185
This Kiwi.com deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 6/172:50 pm
BUF
-
MIA
1 stop8h 13m
Frontier
mié. 6/243:20 pm
MIA
-
BUF
1 stop28h 57m
Frontier
Deal found 4/26$186
This eDestinos deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/112:49 pm
BUF
-
MIA
1 stop25h 38m
Frontier
vie. 5/155:22 pm
MIA
-
BUF
1 stop18h 11m
Frontier
Deal found 4/26$191
This Kiwi.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/2611:36 am
BUF
-
MIA
1 stop25h 44m
Multiple Airlines
mar. 6/24:03 pm
MIA
-
BUF
2 stops21h 51m
Multiple Airlines
Deal found 4/27$192
This Kiwi.com deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/1612:41 pm
BUF
-
MIA
1 stop10h 06m
Multiple Airlines
sáb. 5/309:39 am
MIA
-
BUF
2 stops25h 02m
Multiple Airlines
Deal found 4/25$193
This Kiwi.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 6/107:57 pm
BUF
-
MIA
2 stops27h 06m
Frontier
mié. 6/175:26 pm
MIA
-
BUF
1 stop17h 14m
Frontier
Deal found 4/28$194
This Kiwi.com deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 5/2411:36 am
BUF
-
MIA
1 stop5h 34m
Multiple Airlines
dom. 5/315:05 am
MIA
-
BUF
2 stops32h 49m
Multiple Airlines
Deal found 4/25$195
This Kiwi.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 6/1611:50 am
BUF
-
MIA
1 stop11h 13m
Frontier
vie. 7/108:30 am
MIA
-
BUF
1 stop27h 03m
Frontier
Deal found 4/28$197

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 abril 30, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$177
(Kiwi.com)

One-way from

$60
(Trip.com)

Popular in

March

Cheapest in

September

Average price

$316
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. 14% potential increase in price ($48 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Average for round-trip flights in April 2026

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 2,558,603 searches. Data last updated abril 30, 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

jue. 7/23

7:19 pm-12:55 am

1 stop5h 36m

Miami

jue. 7/30

7:02 am-3:07 pm

1 stop8h 05m

$241

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

lun. 7/6

12:04 pm-6:04 pm

1 stop6h 00m

Miami

sáb. 7/11

7:02 am-3:07 pm

1 stop8h 05m

$278

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

vie. 10/2

7:40 pm-12:54 am

1 stop5h 14m

Miami

dom. 10/4

7:30 am-1:46 pm

1 stop6h 16m

$338
Quickest round-trip

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

vie. 8/28

7:40 pm-12:54 am

1 stop5h 14m

Miami

vie. 9/4

6:00 am-11:15 am

1 stop5h 15m

$338

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

dom. 8/23

9:40 am-10:50 pm

2 stops13h 10m

Miami

sáb. 8/29

7:45 am-5:35 pm

2 stops9h 50m

$354

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

vie. 9/18

2:30 pm-10:53 pm

1 stop8h 23m

Miami

sáb. 9/26

6:00 am-11:15 am

1 stop5h 15m

$359

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

jue. 5/14

10:32 am-6:54 pm

1 stop8h 22m

Miami

sáb. 5/16

6:00 am-11:23 am

1 stop5h 23m

$373

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

dom. 9/13

1:05 pm-6:00 pm

1 stop4h 55m

Miami

dom. 9/20

6:45 am-5:05 pm

2 stops10h 20m

$379

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

vie. 8/14

12:30 pm-10:05 pm

2 stops9h 35m

Miami

mar. 8/18

7:10 am-5:45 pm

2 stops10h 35m

$409

BuffaloMiami

BUF - MIA

BUFMIA

Buffalo

mié. 5/27

10:34 am-4:16 pm

1 stop5h 42m

Miami

mié. 6/3

8:48 am-7:03 pm

2 stops10h 15m

$413

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/27

Showing 1-10 of 23 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
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 abril 30, 2026.

It’s typically best to fly out from Buffalo to Key Largo in the afternoon. Doing so could potentially save you 48% on the flight price compared to flying in the morning, which is usually more expensive.

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

Use this chart to determine the cheapest time to fly round-trip from Buffalo to Key Largo. Price data was last updated on April 25, 2026.

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. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 abril 30, 2026.
Get a feel of what it's like to fly with Southwest,Delta, andJetBlue 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.

Food

7.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Comfort

8.0

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.

Food

7.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Comfort

8.0

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.

Food

7.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Comfort

8.0

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.

Food

7.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Comfort

8.0

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.

Food

7.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Comfort

8.0

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.

Food

7.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Comfort

8.0

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?

    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 36m. Fly via 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 Frontier, which is currently one of the cheapest options available, starting at $72. Southwest flights start at $79 while deals on American Airlines start at $83 one-way.

  • What are the most reliable airlines from Buffalo to Key Largo?

    The top 3 most reliable airlines when flying from Buffalo to Key Largo are American Airlines (88%), Qatar Airways (88%) and Republic Airways (88%).

  • 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

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Alternative routes for Buffalo to Key Largo

See prices for flight routes from nearby airports that may be better suited for you.

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 2,558,603 searches. Data last updated abril 30, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$73Average$244FlexibilityNo cancel feeOn-time62%
DeltaCheapest$128Average$322FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$150Average$303FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$156Average$317FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$158Average$356FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$187Average$290FlexibilityNo cancel feeOn-time69%

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