$66+ 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 3/23. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — MIA
Apr 4 — Apr 111
Round-trip
1 adult, Economy
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Find cheap flights from Buffalo to Key Largo with Cheapflights
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Buffalo to Key Largo are usually found in September or October, booked 81 days in advance, depart on a Tuesday or Wednesday and return on a Monday
Cheap flight deals from Buffalo to Key Largo
Cheapest
Best
Last-minute
One-way
Cheapest flights from Buffalo to Key LargoExplore 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 March 5, 2026.
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 March 5, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/2. 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.
Mon 4/1312:42 pm
BUF
- MIA
1 stop22h 59m
Frontier
Mon 4/207:21 pm
MIA
- BUF
1 stop17h 21m
Frontier
Deal found 3/2![Frontier logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 3/2. 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.
Thu 4/2312:35 pm
BUF
- MIA
1 stop9h 56m
Multiple Airlines
Tue 4/287:04 pm
MIA
- BUF
1 stop17h 38m
Multiple Airlines
Deal found 3/2![Multiple Airlines logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 2/28. 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.
Sun 5/101:08 pm
BUF
- MIA
1 stop11h 41m
Frontier
Sat 5/165:05 am
MIA
- BUF
1 stop7h 08m
Frontier
Deal found 2/28![Frontier logo]()
$169
This Kiwi.com deal was found by Cheapflights users on 3/1. 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.
Tue 5/51:08 pm
BUF
- MIA
1 stop11h 41m
Frontier
Fri 5/85:05 am
MIA
- BUF
1 stop7h 08m
Frontier
Deal found 3/1![Frontier logo]()
$170
This Kiwi.com deal was found by Cheapflights users on 3/1. 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.
Sat 4/111:09 pm
BUF
- MIA
1 stop6h 58m
Multiple Airlines
Sun 4/195:05 am
MIA
- BUF
1 stop6h 04m
Multiple Airlines
Deal found 3/1![Multiple Airlines logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 3/3. 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.
Fri 3/2012:50 pm
BUF
- MIA
1 stop11h 57m
Frontier
Sat 3/287:19 pm
MIA
- BUF
1 stop16h 46m
Frontier
Deal found 3/3![Frontier logo]()
$172
This Kiwi.com deal was found by Cheapflights users on 3/3. 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.
Fri 3/2012:50 pm
BUF
- MIA
1 stop11h 57m
Multiple Airlines
Sat 3/283:12 pm
MIA
- BUF
1 stop20h 53m
Multiple Airlines
Deal found 3/3![Multiple Airlines logo]()
$173
This Kiwi.com deal was found by Cheapflights users on 3/2. 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.
Wed 4/291:56 pm
BUF
- MIA
1 stop10h 53m
Frontier
Sun 5/107:04 pm
MIA
- BUF
1 stop17h 09m
Frontier
Deal found 3/2![Frontier logo]()
$174
This Kiwi.com deal was found by Cheapflights users on 3/2. 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.
Sun 4/1912:07 pm
BUF
- MIA
1 stop22h 05m
Frontier
Fri 4/247:21 pm
MIA
- BUF
1 stop16h 52m
Frontier
Deal found 3/2![Frontier logo]()
$175
This Kiwi.com deal was found by Cheapflights users on 3/3. 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.
Sat 4/181:11 pm
BUF
- MIA
1 stop11h 38m
Frontier
Wed 4/227:04 pm
MIA
- BUF
1 stop16h 36m
Frontier
Deal found 3/3![Frontier logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 3/4. 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.
Tue 4/211:56 pm
BUF
- MIA
1 stop8h 35m
Multiple Airlines
Sat 4/255:05 am
MIA
- BUF
1 stop7h 08m
Multiple Airlines
Deal found 3/4![Multiple Airlines logo]()
$178
This Kiwi.com deal was found by Cheapflights users on 3/4. 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.
Fri 4/1712:08 pm
BUF
- MIA
1 stop26h 02m
Frontier
Wed 4/227:04 pm
MIA
- BUF
1 stop16h 36m
Frontier
Deal found 3/4![Frontier logo]()
$179
Best flights from Buffalo to Key LargoDiscover carefully curated flight deals from Buffalo to Key Largo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 5, 2026.
Discover carefully curated flight deals from Buffalo to Key Largo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 5, 2026.
This Delta deal was found by Cheapflights users on 3/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2912:09 pm
BUF
- MIA
1 stop4h 59m
Delta
Tue 5/51:16 pm
MIA
- BUF
1 stop5h 19m
Delta
Deal found 3/4![Delta logo]()
$217
This Southwest deal was found by Cheapflights users on 3/4. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/233:55 pm
BUF
- MIA
1 stop7h 05m
Southwest
Wed 3/255:45 pm
MIA
- BUF
1 stop4h 55m
Southwest
Deal found 3/4![Southwest logo]()
$238
This Delta deal was found by Cheapflights users on 3/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/316:15 am
BUF
- MIA
1 stop6h 41m
Delta
Thu 6/46:36 pm
MIA
- BUF
1 stop5h 23m
Delta
Deal found 3/1![Delta logo]()
$217
This United Airlines deal was found by Cheapflights users on 3/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/237:52 pm
BUF
- MIA
1 stop15h 43m
United Airlines
Wed 5/278:48 am
MIA
- BUF
2 stops15h 11m
United Airlines
Deal found 3/2![United Airlines logo]()
$459
This Delta deal was found by Cheapflights users on 3/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/283:33 pm
BUF
- MIA
1 stop5h 26m
Delta
Tue 5/51:16 pm
MIA
- BUF
1 stop5h 19m
Delta
Deal found 3/4![Delta logo]()
$217
This Southwest deal was found by Cheapflights users on 3/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/254:15 pm
BUF
- MIA
1 stop5h 25m
Southwest
Wed 4/16:10 am
MIA
- BUF
1 stop5h 30m
Southwest
Deal found 3/3![Southwest logo]()
$273
This Delta deal was found by Cheapflights users on 2/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/127:00 am
BUF
- MIA
2 stops12h 58m
Delta
Wed 5/136:00 am
MIA
- BUF
1 stop5h 13m
Delta
Deal found 2/28![Delta logo]()
$250
This Southwest deal was found by Cheapflights users on 3/4. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/235:55 pm
BUF
- MIA
1 stop5h 05m
Southwest
Tue 3/246:55 am
MIA
- BUF
2 stops9h 05m
Southwest
Deal found 3/4![Southwest logo]()
$328
This Southwest deal was found by Cheapflights users on 3/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/162:00 pm
BUF
- MIA
2 stops8h 05m
Southwest
Sun 5/247:00 am
MIA
- BUF
1 stop5h 15m
Southwest
Deal found 3/3![Southwest logo]()
$340
This Southwest deal was found by Cheapflights users on 3/4. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/284:00 pm
BUF
- MIA
1 stop7h 00m
Southwest
Sun 6/75:35 am
MIA
- BUF
2 stops8h 50m
Southwest
Deal found 3/4![Southwest logo]()
$349
This Southwest deal was found by Cheapflights users on 3/4. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2911:00 am
BUF
- MIA
2 stops9h 40m
Southwest
Tue 5/57:00 am
MIA
- BUF
2 stops7h 35m
Southwest
Deal found 3/4![Southwest logo]()
$368
This Southwest deal was found by Cheapflights users on 2/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/1212:05 pm
BUF
- MIA
1 stop11h 25m
Southwest
Sun 3/156:25 am
MIA
- BUF
1 stop9h 15m
Southwest
Deal found 2/28![Southwest logo]()
$509
Last-minute flights from Buffalo to Key LargoDiscover last-minute flight deals from Buffalo to Key Largo. Data last updated March 5, 2026 and is based on user searches.
Discover last-minute flight deals from Buffalo to Key Largo. Data last updated March 5, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 3/3. 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.
Fri 3/2012:50 pm
BUF
- MIA
1 stop11h 57m
Frontier
Sat 3/287:19 pm
MIA
- BUF
1 stop16h 46m
Frontier
Deal found 3/3![Frontier logo]()
$172
This Kiwi.com deal was found by Cheapflights users on 3/3. 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.
Fri 3/2012:50 pm
BUF
- MIA
1 stop11h 57m
Multiple Airlines
Sat 3/283:12 pm
MIA
- BUF
1 stop20h 53m
Multiple Airlines
Deal found 3/3![Multiple Airlines logo]()
$173
This Kiwi.com deal was found by Cheapflights users on 3/1. 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.
Sat 4/111:09 pm
BUF
- MIA
1 stop6h 58m
Multiple Airlines
Sun 4/195:05 am
MIA
- BUF
1 stop6h 04m
Multiple Airlines
Deal found 3/1![Multiple Airlines logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 3/2. 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.
Mon 4/1312:42 pm
BUF
- MIA
1 stop22h 59m
Frontier
Mon 4/207:21 pm
MIA
- BUF
1 stop17h 21m
Frontier
Deal found 3/2![Frontier logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 3/4. 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.
Fri 4/1712:08 pm
BUF
- MIA
1 stop26h 02m
Frontier
Wed 4/227:04 pm
MIA
- BUF
1 stop16h 36m
Frontier
Deal found 3/4![Frontier logo]()
$179
This Frontier deal was found by Cheapflights users on 2/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1712:08 pm
BUF
- MIA
1 stop5h 49m
Frontier
Sat 4/255:05 am
MIA
- BUF
1 stop7h 08m
Frontier
Deal found 2/28![Frontier logo]()
$180
This Kiwi.com deal was found by Cheapflights users on 3/3. 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.
Sat 4/181:11 pm
BUF
- MIA
1 stop11h 38m
Frontier
Wed 4/227:04 pm
MIA
- BUF
1 stop16h 36m
Frontier
Deal found 3/3![Frontier logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 3/2. 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.
Sun 4/1912:07 pm
BUF
- MIA
1 stop22h 05m
Frontier
Fri 4/247:21 pm
MIA
- BUF
1 stop16h 52m
Frontier
Deal found 3/2![Frontier logo]()
$175
This Kiwi.com deal was found by Cheapflights users on 3/4. 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.
Tue 4/211:56 pm
BUF
- MIA
1 stop8h 35m
Multiple Airlines
Sat 4/255:05 am
MIA
- BUF
1 stop7h 08m
Multiple Airlines
Deal found 3/4![Multiple Airlines logo]()
$178
This Kiwi.com deal was found by Cheapflights users on 3/2. 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.
Thu 4/2312:35 pm
BUF
- MIA
1 stop9h 56m
Multiple Airlines
Tue 4/287:04 pm
MIA
- BUF
1 stop17h 38m
Multiple Airlines
Deal found 3/2![Multiple Airlines logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 3/2. 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.
Tue 4/281:56 pm
BUF
- MIA
1 stop22h 07m
Frontier
Fri 5/85:05 am
MIA
- BUF
1 stop7h 08m
Frontier
Deal found 3/2![Frontier logo]()
$170
This Kiwi.com deal was found by Cheapflights users on 3/2. 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.
Wed 4/291:56 pm
BUF
- MIA
1 stop10h 53m
Frontier
Sun 5/107:04 pm
MIA
- BUF
1 stop17h 09m
Frontier
Deal found 3/2![Frontier logo]()
$174
One-way flights from Buffalo to Key LargoSearch for one-way flight options from Buffalo to Key Largo. Find affordable one-way fares based on user searches. Data last updated March 5, 2026.
Search for one-way flight options from Buffalo to Key Largo. Find affordable one-way fares based on user searches. Data last updated March 5, 2026.
This Trip.com deal was found by Cheapflights users on 3/3. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/2311:59 am
BUF
- MIA
1 stop12h 48m
Frontier
Deal found 3/3![Frontier logo]()
$66
This Trip.com deal was found by Cheapflights users on 3/3. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/71:02 pm
BUF
- MIA
1 stop11h 47m
Frontier
Deal found 3/3![Frontier logo]()
$71
This Trip.com deal was found by Cheapflights users on 3/3. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/21:11 pm
BUF
- MIA
1 stop11h 38m
Frontier
Deal found 3/3![Frontier logo]()
$72
This Trip.com deal was found by Cheapflights users on 3/3. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/111:09 pm
BUF
- MIA
1 stop11h 40m
Frontier
Deal found 3/3![Frontier logo]()
$73
This Trip.com deal was found by Cheapflights users on 3/1. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/151:56 pm
BUF
- MIA
1 stop10h 53m
Frontier
Deal found 3/1![Frontier logo]()
$76
This Southwest deal was found by Cheapflights users on 3/1. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/115:00 pm
BUF
- MIA
1 stop6h 15m
Southwest
Deal found 3/1![Southwest logo]()
$77
This Kiwi.com deal was found by Cheapflights users on 3/3. 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.
Wed 4/812:18 pm
BUF
- MIA
1 stop7h 49m
Multiple Airlines
Deal found 3/3![Multiple Airlines logo]()
$78
This WAYA deal was found by Cheapflights users on 3/3. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/1912:50 pm
BUF
- MIA
1 stop7h 17m
Multiple Airlines
Deal found 3/3![Multiple Airlines logo]()
$79
This Kiwi.com deal was found by Cheapflights users on 3/3. 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.
Thu 4/301:08 pm
BUF
- MIA
1 stop11h 41m
Frontier
Deal found 3/3![Frontier logo]()
$80
This Southwest deal was found by Cheapflights users on 3/1. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/182:00 pm
BUF
- MIA
2 stops8h 05m
Southwest
Deal found 3/1![Southwest logo]()
$82
This Kiwi.com deal was found by Cheapflights users on 3/2. 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.
Tue 4/281:56 pm
BUF
- MIA
1 stop22h 07m
Frontier
Deal found 3/2![Frontier logo]()
$84
This Kiwi.com deal was found by Cheapflights users on 3/2. 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.
Thu 5/141:08 pm
BUF
- MIA
1 stop11h 41m
Frontier
Deal found 3/2![Frontier logo]()
$85
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 March 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $167 (Kiwi.com) |
One-way from | $66 (Trip.com) |
Popular in | February |
Cheapest in | September |
Average price | $336 |
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 March 5, 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
Cheapest round-trip
Quickest round-trip
BuffaloMiami
BUF - MIA
BUFMIA
Buffalo
Wed 4/29
12:09 pm-5:08 pm
1 stop4h 59m
Miami
Tue 5/5
1:16 pm-6:35 pm
1 stop5h 19m
$217
BuffaloMiami
BUF - MIA
BUFMIA
Buffalo
Sun 5/31
6:15 am-12:56 pm
1 stop6h 41m
Miami
Thu 6/4
6:36 pm-11:59 pm
1 stop5h 23m
$217
BuffaloMiami
BUF - MIA
BUFMIA
Buffalo
Tue 4/28
3:33 pm-8:59 pm
1 stop5h 26m
Miami
Tue 5/5
1:16 pm-6:35 pm
1 stop5h 19m
$217
BuffaloMiami
BUF - MIA
BUFMIA
Buffalo
Mon 3/23
3:55 pm-11:00 pm
1 stop7h 05m
Miami
Wed 3/25
5:45 pm-10:40 pm
1 stop4h 55m
$238
BuffaloMiami
BUF - MIA
BUFMIA
Buffalo
Tue 5/12
7:00 am-7:58 pm
2 stops12h 58m
Miami
Wed 5/13
6:00 am-11:13 am
1 stop5h 13m
$250
BuffaloMiami
BUF - MIA
BUFMIA
Buffalo
Wed 3/25
4:15 pm-9:40 pm
1 stop5h 25m
Miami
Wed 4/1
6:10 am-11:40 am
1 stop5h 30m
$273
BuffaloMiami
BUF - MIA
BUFMIA
Buffalo
Mon 3/23
5:55 pm-11:00 pm
1 stop5h 05m
Miami
Tue 3/24
6:55 am-4:00 pm
2 stops9h 05m
$328
BuffaloMiami
BUF - MIA
BUFMIA
Buffalo
Sat 5/16
2:00 pm-10:05 pm
2 stops8h 05m
Miami
Sun 5/24
7:00 am-12:15 pm
1 stop5h 15m
$340
BuffaloMiami
BUF - MIA
BUFMIA
Buffalo
Thu 5/28
4:00 pm-11:00 pm
1 stop7h 00m
Miami
Sun 6/7
5:35 am-2:25 pm
2 stops8h 50m
$349
BuffaloMiami
BUF - MIA
BUFMIA
Buffalo
Wed 4/29
11:00 am-8:40 pm
2 stops9h 40m
Miami
Tue 5/5
7:00 am-2:35 pm
2 stops7h 35m
$368
Showing 1-10 of 23 resultsSorted by cheapest first
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.
BUF-MIA
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
BUF-KE9
BUF-MIA
How far ahead should I book a flight from Buffalo to Key Largo?
Use this chart to determine the optimal time to book a round-trip flight from Buffalo to Key Largo. Price data was last updated on February 27, 2026.
The best time to book flights from Buffalo to Key Largo is 81 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Buffalo to Key Largo?
Currently, March is the cheapest month in which you can book a flight from Buffalo to Key Largo (average of $88). Flying from Buffalo to Key Largo in December is currently the most expensive (average of $159). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
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 March 5, 2026.
It’s typically best to fly out from Buffalo to Key Largo in the afternoon. Doing so could potentially save you 45% 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 February 21, 2026.
Travelers seeking maximum savings on their Buffalo to Key Largo flight should consider departing on Wednesday evenings 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.
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 March 5, 2026.
Get a feel of what it's like to fly with Southwest, Delta, and United 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.
Comfort
8.0
Food
7.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Comfort
8.0
Food
7.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Comfort
8.0
Food
7.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Comfort
8.0
Food
7.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Comfort
8.0
Food
7.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Comfort
8.0
Food
7.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
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.
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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.
Complete your trip
Complete your trip to Key Largo by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Buffalo to Key Largo by cabin class
Find flights from Buffalo to Key Largo, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Buffalo and Key Largo flights
Browse other Buffalo and Key Largo flight options. Last updated on March 5, 2026.
Other flights from Buffalo
Browse through other flights departing from Buffalo. Flights are based on user searches made on Cheapflights and were last updated on March 5, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Buffalo to Key Largo flights
Consider these flights traveling from Buffalo to Key Largo.
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 March 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$73 | Average$239 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$113 | Average$314 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$143 | Average$300 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$156 | Average$284 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$158 | Average$353 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$183 | Average$353 | FlexibilityNo cancel fee | On-time69% |