$61+ 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 5/18. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — MIA
May 18 — May 251
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 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
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 April 18, 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 April 18, 2026.
This Frontier deal was found by Cheapflights users on 4/17. 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.
Sat 5/21:11 pm
BUF
- MIA
1 stop11h 38m
Frontier
Wed 5/68:10 am
MIA
- BUF
1 stop5h 44m
Frontier
Deal found 4/17![Frontier logo]()
$200
This Frontier deal was found by Cheapflights users on 4/17. 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.
Wed 5/132:49 pm
BUF
- MIA
1 stop7h 58m
Frontier
Mon 5/188:10 am
MIA
- BUF
1 stop5h 44m
Frontier
Deal found 4/17![Frontier logo]()
$201
This Frontier deal was found by Cheapflights users on 4/18. 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.
Mon 5/112:49 pm
BUF
- MIA
1 stop7h 58m
Frontier
Fri 5/158:10 am
MIA
- BUF
1 stop5h 44m
Frontier
Deal found 4/18![Frontier logo]()
$202
This Kiwi.com deal was found by Cheapflights users on 4/18. 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 6/32:49 pm
BUF
- MIA
1 stop7h 58m
Frontier
Mon 6/88:10 am
MIA
- BUF
1 stop5h 44m
Frontier
Deal found 4/18![Frontier logo]()
$203
This Kiwi.com deal was found by Cheapflights users on 4/17. 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 7/202:50 pm
BUF
- MIA
1 stop8h 13m
Multiple Airlines
Sat 7/2510:24 am
MIA
- BUF
1 stop24h 16m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$204
This Kiwi.com deal was found by Cheapflights users on 4/16. 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 5/1211:36 am
BUF
- MIA
2 stops22h 26m
Multiple Airlines
Tue 5/1911:23 am
MIA
- BUF
1 stop26h 31m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$206
This Kiwi.com deal was found by Cheapflights users on 4/18. 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 5/82:49 pm
BUF
- MIA
1 stop7h 58m
Frontier
Wed 5/135:22 pm
MIA
- BUF
2 stops26h 42m
Frontier
Deal found 4/18![Frontier logo]()
$208
This Kiwi.com deal was found by Cheapflights users on 4/18. 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 6/27:52 pm
BUF
- MIA
2 stops43h 02m
Multiple Airlines
Tue 6/95:26 pm
MIA
- BUF
1 stop20h 29m
Multiple Airlines
Deal found 4/18![Multiple Airlines logo]()
$209
This Kiwi.com deal was found by Cheapflights users on 4/16. 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 5/3111:36 am
BUF
- MIA
1 stop5h 34m
Multiple Airlines
Sun 6/75:05 am
MIA
- BUF
2 stops32h 49m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$210
This Justfly.com deal was found by Cheapflights users on 4/14. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2712:32 pm
BUF
- MIA
1 stop5h 25m
Frontier
Thu 5/75:05 am
MIA
- BUF
1 stop14h 59m
Frontier
Deal found 4/14![Frontier logo]()
$211
This Justfly.com deal was found by Cheapflights users on 4/15. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/82:49 pm
BUF
- MIA
1 stop7h 58m
Frontier
Mon 5/118:10 am
MIA
- BUF
1 stop5h 44m
Frontier
Deal found 4/15![Frontier logo]()
$212
This Kiwi.com deal was found by Cheapflights users on 4/16. 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 6/152:50 pm
BUF
- MIA
1 stop22h 59m
Frontier
Wed 6/243:20 pm
MIA
- BUF
1 stop28h 57m
Frontier
Deal found 4/16![Frontier logo]()
$213
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 April 18, 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 April 18, 2026.
This American Airlines deal was found by Cheapflights users on 4/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2010:44 am
BUF
- MIA
1 stop7h 36m
American Airlines
Sun 5/246:45 am
MIA
- BUF
1 stop7h 36m
American Airlines
Deal found 4/13![American Airlines logo]()
$268
This Delta deal was found by Cheapflights users on 4/17. 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.
Mon 5/44:59 pm
BUF
- MIA
1 stop5h 49m
Delta
Thu 5/76:36 pm
MIA
- BUF
1 stop5h 23m
Delta
Deal found 4/17![Delta logo]()
$278
This Southwest deal was found by Cheapflights users on 4/15. 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 5/116:00 am
BUF
- MIA
2 stops7h 10m
Southwest
Wed 5/137:00 am
MIA
- BUF
2 stops7h 35m
Southwest
Deal found 4/15![Southwest logo]()
$304
This United Airlines deal was found by Cheapflights users on 4/16. 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 5/26:10 am
BUF
- MIA
2 stops8h 13m
United Airlines
Wed 5/610:16 am
MIA
- BUF
2 stops8h 19m
United Airlines
Deal found 4/16![United Airlines logo]()
$395
This Delta deal was found by Cheapflights users on 4/13. 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.
Thu 10/87:40 pm
BUF
- MIA
1 stop5h 12m
Delta
Mon 10/126:40 am
MIA
- BUF
1 stop7h 07m
Delta
Deal found 4/13![Delta logo]()
$349
This Southwest deal was found by Cheapflights users on 4/14. 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 7/114:30 pm
BUF
- MIA
1 stop5h 55m
Southwest
Sun 7/195:35 am
MIA
- BUF
2 stops9h 00m
Southwest
Deal found 4/14![Southwest logo]()
$353
This Delta deal was found by Cheapflights users on 4/18. 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.
Mon 7/612:04 pm
BUF
- MIA
1 stop6h 00m
Delta
Sat 7/117:02 am
MIA
- BUF
1 stop8h 05m
Delta
Deal found 4/18![Delta logo]()
$364
This Southwest deal was found by Cheapflights users on 4/17. 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 5/256:00 am
BUF
- MIA
2 stops7h 10m
Southwest
Thu 5/286:20 am
MIA
- BUF
2 stops10h 20m
Southwest
Deal found 4/17![Southwest logo]()
$379
This Southwest deal was found by Cheapflights users on 4/18. 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 6/42:50 pm
BUF
- MIA
2 stops7h 15m
Southwest
Sat 6/66:20 am
MIA
- BUF
2 stops7h 35m
Southwest
Deal found 4/18![Southwest logo]()
$393
This Southwest deal was found by Cheapflights users on 4/17. 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 5/22:00 pm
BUF
- MIA
2 stops8h 05m
Southwest
Sat 5/911:50 am
MIA
- BUF
2 stops9h 50m
Southwest
Deal found 4/17![Southwest logo]()
$393
Last-minute flights from Buffalo to Key LargoDiscover last-minute flight deals from Buffalo to Key Largo. Data last updated April 18, 2026 and is based on user searches.
Discover last-minute flight deals from Buffalo to Key Largo. Data last updated April 18, 2026 and is based on user searches.
This Justfly.com deal was found by Cheapflights users on 4/14. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2712:32 pm
BUF
- MIA
1 stop5h 25m
Frontier
Thu 5/75:05 am
MIA
- BUF
1 stop14h 59m
Frontier
Deal found 4/14![Frontier logo]()
$211
This Justfly.com deal was found by Cheapflights users on 4/14. 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 Justfly.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
Fri 5/88:10 am
MIA
- BUF
1 stop5h 44m
Frontier
Deal found 4/14![Frontier logo]()
$216
This Frontier deal was found by Cheapflights users on 4/17. 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.
Sat 5/21:11 pm
BUF
- MIA
1 stop11h 38m
Frontier
Wed 5/68:10 am
MIA
- BUF
1 stop5h 44m
Frontier
Deal found 4/17![Frontier logo]()
$200
This Kiwi.com deal was found by Cheapflights users on 4/16. 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 5/38:08 pm
BUF
- MIA
2 stops21h 49m
Frontier
Fri 5/85:22 pm
MIA
- BUF
1 stop18h 11m
Frontier
Deal found 4/16![Frontier logo]()
$217
This Kiwi.com deal was found by Cheapflights users on 4/18. 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 5/82:49 pm
BUF
- MIA
1 stop7h 58m
Frontier
Wed 5/135:22 pm
MIA
- BUF
2 stops26h 42m
Frontier
Deal found 4/18![Frontier logo]()
$208
This Justfly.com deal was found by Cheapflights users on 4/15. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/82:49 pm
BUF
- MIA
1 stop7h 58m
Frontier
Mon 5/118:10 am
MIA
- BUF
1 stop5h 44m
Frontier
Deal found 4/15![Frontier logo]()
$212
This Frontier deal was found by Cheapflights users on 4/18. 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.
Mon 5/112:49 pm
BUF
- MIA
1 stop7h 58m
Frontier
Fri 5/158:10 am
MIA
- BUF
1 stop5h 44m
Frontier
Deal found 4/18![Frontier logo]()
$202
This Kiwi.com deal was found by Cheapflights users on 4/16. 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 5/1211:36 am
BUF
- MIA
2 stops22h 26m
Multiple Airlines
Tue 5/1911:23 am
MIA
- BUF
1 stop26h 31m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$206
This Frontier deal was found by Cheapflights users on 4/17. 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.
Wed 5/132:49 pm
BUF
- MIA
1 stop7h 58m
Frontier
Mon 5/188:10 am
MIA
- BUF
1 stop5h 44m
Frontier
Deal found 4/17![Frontier logo]()
$201
This Kiwi.com deal was found by Cheapflights users on 4/14. 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 5/2111:36 am
BUF
- MIA
1 stop5h 34m
Multiple Airlines
Mon 5/259:15 am
MIA
- BUF
2 stops25h 26m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$218
This Kiwi.com deal was found by Cheapflights users on 4/17. 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 5/257:52 pm
BUF
- MIA
2 stops22h 51m
Frontier
Thu 5/285:22 pm
MIA
- BUF
1 stop20h 32m
Frontier
Deal found 4/17![Frontier logo]()
$214
This Kiwi.com deal was found by Cheapflights users on 4/16. 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 5/3111:36 am
BUF
- MIA
1 stop5h 34m
Multiple Airlines
Sun 6/75:05 am
MIA
- BUF
2 stops32h 49m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$210
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 April 18, 2026.
Search for one-way flight options from Buffalo to Key Largo. Find affordable one-way fares based on user searches. Data last updated April 18, 2026.
This Trip.com deal was found by Cheapflights users on 4/13. 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 5/182:49 pm
BUF
- MIA
1 stop7h 58m
Frontier
Deal found 4/13![Frontier logo]()
$61
This WAYA deal was found by Cheapflights users on 4/14. 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.
Wed 5/132:49 pm
BUF
- MIA
1 stop7h 58m
Frontier
Deal found 4/14![Frontier logo]()
$65
This Kiwi.com deal was found by Cheapflights users on 4/17. 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 5/1911:36 am
BUF
- MIA
1 stop11h 11m
Frontier
Deal found 4/17![Frontier logo]()
$66
This Kiwi.com deal was found by Cheapflights users on 4/15. 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 5/152:49 pm
BUF
- MIA
1 stop25h 38m
Frontier
Deal found 4/15![Frontier logo]()
$67
This Kiwi.com deal was found by Cheapflights users on 4/14. 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 5/3111:36 am
BUF
- MIA
1 stop5h 34m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$76
This Kiwi.com deal was found by Cheapflights users on 4/15. 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 5/3012:41 pm
BUF
- MIA
1 stop24h 39m
Frontier
Deal found 4/15![Frontier logo]()
$77
This Kiwi.com deal was found by Cheapflights users on 4/14. 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 5/2611:36 am
BUF
- MIA
1 stop11h 11m
Frontier
Deal found 4/14![Frontier logo]()
$78
This Trip.com deal was found by Cheapflights users on 4/14. 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 5/511:36 am
BUF
- MIA
1 stop11h 11m
Frontier
Deal found 4/14![Frontier logo]()
$79
This Kiwi.com deal was found by Cheapflights users on 4/14. 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 6/152:50 pm
BUF
- MIA
1 stop22h 59m
Frontier
Deal found 4/14![Frontier logo]()
$82
This Kiwi.com deal was found by Cheapflights users on 4/14. 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 5/1211:36 am
BUF
- MIA
1 stop11h 11m
Frontier
Deal found 4/14![Frontier logo]()
$84
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 April 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $200 (Frontier) |
One-way from | $61 (Trip.com) |
Popular in | March |
Cheapest in | September |
Average price | $316 |
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 April 18, 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
BuffaloMiami
BUF - MIA
BUFMIA
Buffalo
Wed 5/20
10:44 am-6:20 pm
1 stop7h 36m
Miami
Sun 5/24
6:45 am-2:21 pm
1 stop7h 36m
$268
Quickest round-trip
BuffaloMiami
BUF - MIA
BUFMIA
Buffalo
Mon 5/4
4:59 pm-10:48 pm
1 stop5h 49m
Miami
Thu 5/7
6:36 pm-11:59 pm
1 stop5h 23m
$278
BuffaloMiami
BUF - MIA
BUFMIA
Buffalo
Mon 5/11
6:00 am-1:10 pm
2 stops7h 10m
Miami
Wed 5/13
7:00 am-2:35 pm
2 stops7h 35m
$304
BuffaloMiami
BUF - MIA
BUFMIA
Buffalo
Thu 10/8
7:40 pm-12:52 am
1 stop5h 12m
Miami
Mon 10/12
6:40 am-1:47 pm
1 stop7h 07m
$349
BuffaloMiami
BUF - MIA
BUFMIA
Buffalo
Sat 7/11
4:30 pm-10:25 pm
1 stop5h 55m
Miami
Sun 7/19
5:35 am-2:35 pm
2 stops9h 00m
$353
BuffaloMiami
BUF - MIA
BUFMIA
Buffalo
Mon 7/6
12:04 pm-6:04 pm
1 stop6h 00m
Miami
Sat 7/11
7:02 am-3:07 pm
1 stop8h 05m
$364
BuffaloMiami
BUF - MIA
BUFMIA
Buffalo
Mon 5/25
6:00 am-1:10 pm
2 stops7h 10m
Miami
Thu 5/28
6:20 am-4:40 pm
2 stops10h 20m
$379
BuffaloMiami
BUF - MIA
BUFMIA
Buffalo
Thu 6/4
2:50 pm-10:05 pm
2 stops7h 15m
Miami
Sat 6/6
6:20 am-1:55 pm
2 stops7h 35m
$393
BuffaloMiami
BUF - MIA
BUFMIA
Buffalo
Sat 5/2
2:00 pm-10:05 pm
2 stops8h 05m
Miami
Sat 5/9
11:50 am-9:40 pm
2 stops9h 50m
$393
BuffaloMiami
BUF - MIA
BUFMIA
Buffalo
Sat 5/2
6:10 am-2:23 pm
2 stops8h 13m
Miami
Wed 5/6
10:16 am-6:35 pm
2 stops8h 19m
$395
Showing 1-10 of 21 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 April 10, 2026.
The best time to book flights from Buffalo to Key Largo is 90 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 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 April 18, 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 11, 2026.
Travelers seeking maximum savings on their Buffalo to Key Largo flight should consider departing on Wednesday afternoons 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 April 18, 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
Comfort
8.0
Entertainment
7.5
Overall
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Comfort
8.0
Entertainment
7.5
Overall
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Comfort
8.0
Entertainment
7.5
Overall
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Comfort
8.0
Entertainment
7.5
Overall
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Comfort
8.0
Entertainment
7.5
Overall
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Comfort
8.0
Entertainment
7.5
Overall
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
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
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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 April 18, 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 April 18, 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 April 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$73 | Average$244 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$113 | Average$319 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$152 | Average$302 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$156 | Average$313 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$158 | Average$354 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$187 | Average$303 | FlexibilityNo cancel fee | On-time69% |