$109+ Cheap flights from San Juan to Buffalo (BUF)
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 8/21. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — BUF
Jul 23 — Jul 301
Round-trip
1 adult, Economy
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Find cheap flights from San Juan to Buffalo 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 San Juan to Buffalo are usually found in September or February, booked 16 days in advance, depart on a Tuesday or Monday and return on a Thursday
Cheap flight deals from San Juan to Buffalo
Cheapest
Best
Last-minute
One-way
Cheapest flights from San Juan to BuffaloExplore the most affordable flight options available from San Juan to Buffalo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 23, 2026.
Explore the most affordable flight options available from San Juan to Buffalo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 23, 2026.
This American Airlines deal was found by Cheapflights users on 6/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/147:00 am
SJU
- BUF
1 stop7h 26m
American Airlines
Mon 8/1710:43 am
BUF
- SJU
1 stop11h 41m
American Airlines
Deal found 6/18![American Airlines logo]()
$224
This Southwest deal was found by Cheapflights users on 6/20. 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.
Tue 10/66:10 am
SJU
- BUF
1 stop6h 30m
Southwest
Sat 10/103:45 pm
BUF
- SJU
2 stops8h 05m
Southwest
Deal found 6/20![Southwest logo]()
$270
This American Airlines deal was found by Cheapflights users on 6/21. 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 11/44:44 pm
SJU
- BUF
1 stop8h 24m
American Airlines
Wed 11/1111:07 am
BUF
- SJU
2 stops10h 32m
American Airlines
Deal found 6/21![American Airlines logo]()
$283
This SmartFares deal was found by Cheapflights users on 6/21. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/56:29 pm
SJU
- BUF
Nonstop4h 38m
JetBlue
Wed 8/127:00 am
BUF
- SJU
Nonstop4h 38m
JetBlue
Deal found 6/21![JetBlue logo]()
$300
This American Airlines deal was found by Cheapflights users on 6/21. 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.
Mon 9/146:27 am
SJU
- BUF
2 stops11h 01m
American Airlines
Sat 9/195:30 am
BUF
- SJU
2 stops9h 20m
American Airlines
Deal found 6/21![American Airlines logo]()
$303
This Southwest deal was found by Cheapflights users on 6/22. 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 11/46:45 am
SJU
- BUF
1 stop6h 25m
Southwest
Wed 11/1112:45 pm
BUF
- SJU
2 stops8h 30m
Southwest
Deal found 6/22![Southwest logo]()
$306
This Cheapflightsfares deal was found by Cheapflights users on 6/23. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/56:29 pm
SJU
- BUF
Nonstop4h 38m
JetBlue
Mon 8/106:00 am
BUF
- SJU
Nonstop4h 38m
JetBlue
Deal found 6/23![JetBlue logo]()
$307
This United Airlines deal was found by Cheapflights users on 6/22. 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.
Wed 11/43:05 pm
SJU
- BUF
1 stop9h 16m
United Airlines
Wed 11/116:00 am
BUF
- SJU
1 stop6h 41m
United Airlines
Deal found 6/22![United Airlines logo]()
$308
This SmartFares deal was found by Cheapflights users on 6/22. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/16:20 pm
SJU
- BUF
Nonstop4h 38m
JetBlue
Wed 7/87:00 am
BUF
- SJU
Nonstop4h 35m
JetBlue
Deal found 6/22![JetBlue logo]()
$320
This Southwest deal was found by Cheapflights users on 6/21. 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 9/245:30 am
SJU
- BUF
1 stop7h 15m
Southwest
Sun 9/276:10 pm
BUF
- SJU
1 stop6h 20m
Southwest
Deal found 6/21![Southwest logo]()
$322
This Delta deal was found by Cheapflights users on 6/23. 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.
Sat 9/263:10 pm
SJU
- BUF
1 stop7h 26m
Delta
Sat 10/36:05 am
BUF
- SJU
1 stop10h 44m
Delta
Deal found 6/23![Delta logo]()
$324
This SmartFares deal was found by Cheapflights users on 6/23. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/56:29 pm
SJU
- BUF
Nonstop4h 38m
JetBlue
Sat 8/87:00 am
BUF
- SJU
Nonstop4h 40m
JetBlue
Deal found 6/23![JetBlue logo]()
$325
Best flights from San Juan to BuffaloDiscover carefully curated flight deals from San Juan to Buffalo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 23, 2026.
Discover carefully curated flight deals from San Juan to Buffalo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 23, 2026.
This Southwest deal was found by Cheapflights users on 6/20. 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.
Tue 10/66:10 am
SJU
- BUF
1 stop6h 30m
Southwest
Sat 10/103:45 pm
BUF
- SJU
2 stops8h 05m
Southwest
Deal found 6/20![Southwest logo]()
$270
This Delta deal was found by Cheapflights users on 6/22. 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 9/241:16 pm
SJU
- BUF
1 stop10h 56m
Delta
Tue 9/296:05 am
BUF
- SJU
1 stop10h 44m
Delta
Deal found 6/22![Delta logo]()
$324
This United Airlines deal was found by Cheapflights users on 6/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/194:55 pm
SJU
- BUF
1 stop6h 41m
United Airlines
Sat 10/243:52 pm
BUF
- SJU
1 stop7h 58m
United Airlines
Deal found 6/18![United Airlines logo]()
$349
This JetBlue deal was found by Cheapflights users on 6/18. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/242:20 am
SJU
- BUF
1 stop7h 21m
JetBlue
Wed 8/263:52 pm
BUF
- SJU
1 stop6h 47m
JetBlue
Deal found 6/18![JetBlue logo]()
$402
This Southwest deal was found by Cheapflights users on 6/21. 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.
Fri 10/236:00 am
SJU
- BUF
1 stop8h 30m
Southwest
Tue 10/272:25 pm
BUF
- SJU
1 stop8h 15m
Southwest
Deal found 6/21![Southwest logo]()
$270
This Southwest deal was found by Cheapflights users on 6/22. 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 11/46:45 am
SJU
- BUF
1 stop6h 25m
Southwest
Wed 11/1112:45 pm
BUF
- SJU
2 stops8h 30m
Southwest
Deal found 6/22![Southwest logo]()
$306
This Delta deal was found by Cheapflights users on 6/19. 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 8/207:30 am
SJU
- BUF
1 stop11h 49m
Delta
Mon 8/246:05 am
BUF
- SJU
1 stop10h 33m
Delta
Deal found 6/19![Delta logo]()
$359
This Southwest deal was found by Cheapflights users on 6/20. 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 8/135:30 am
SJU
- BUF
1 stop12h 55m
Southwest
Mon 8/243:55 pm
BUF
- SJU
1 stop6h 55m
Southwest
Deal found 6/20![Southwest logo]()
$306
This Southwest deal was found by Cheapflights users on 6/18. 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.
Fri 8/145:00 am
SJU
- BUF
1 stop6h 50m
Southwest
Mon 8/175:40 am
BUF
- SJU
2 stops11h 15m
Southwest
Deal found 6/18![Southwest logo]()
$347
Last-minute flights from San Juan to BuffaloDiscover last-minute flight deals from San Juan to Buffalo. Data last updated June 23, 2026 and is based on user searches.
Discover last-minute flight deals from San Juan to Buffalo. Data last updated June 23, 2026 and is based on user searches.
This SmartFares deal was found by Cheapflights users on 6/22. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/16:20 pm
SJU
- BUF
Nonstop4h 38m
JetBlue
Wed 7/87:00 am
BUF
- SJU
Nonstop4h 35m
JetBlue
Deal found 6/22![JetBlue logo]()
$320
This SmartFares deal was found by Cheapflights users on 6/22. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/16:20 pm
SJU
- BUF
Nonstop4h 38m
JetBlue
Mon 7/67:00 am
BUF
- SJU
Nonstop4h 35m
JetBlue
Deal found 6/22![JetBlue logo]()
$340
This Expedia deal was found by Cheapflights users on 6/22. 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.
Wed 7/16:20 pm
SJU
- BUF
Nonstop4h 38m
Multiple Airlines
Wed 7/87:57 pm
BUF
- SJU
1 stop12h 00m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$361
This CheapOair deal was found by Cheapflights users on 6/23. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/16:20 pm
SJU
- BUF
Nonstop4h 38m
Multiple Airlines
Tue 7/79:09 pm
BUF
- SJU
1 stop14h 07m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$366
This SmartFares deal was found by Cheapflights users on 6/22. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/36:20 pm
SJU
- BUF
Nonstop4h 38m
JetBlue
Wed 7/87:00 am
BUF
- SJU
Nonstop4h 35m
JetBlue
Deal found 6/22![JetBlue logo]()
$370
This Expedia deal was found by Cheapflights users on 6/22. 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.
Wed 7/83:10 am
SJU
- BUF
1 stop13h 22m
Frontier
Wed 7/157:57 pm
BUF
- SJU
1 stop12h 00m
Frontier
Deal found 6/22![Frontier logo]()
$376
This SmartFares deal was found by Cheapflights users on 6/20. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/136:29 pm
SJU
- BUF
Nonstop4h 38m
JetBlue
Mon 7/208:42 am
BUF
- SJU
1 stop9h 11m
JetBlue
Deal found 6/20![JetBlue logo]()
$347
This Priceline deal was found by Cheapflights users on 6/23. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/136:29 pm
SJU
- BUF
Nonstop4h 38m
Multiple Airlines
Sat 7/2510:02 pm
BUF
- SJU
1 stop9h 55m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$375
This Priceline deal was found by Cheapflights users on 6/18. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/158:37 pm
SJU
- BUF
1 stop19h 55m
Frontier
Wed 7/227:57 pm
BUF
- SJU
1 stop12h 00m
Frontier
Deal found 6/18![Frontier logo]()
$336
This Expedia deal was found by Cheapflights users on 6/21. 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.
Wed 7/298:37 pm
SJU
- BUF
1 stop19h 55m
Frontier
Sun 8/25:22 pm
BUF
- SJU
1 stop6h 45m
Frontier
Deal found 6/21![Frontier logo]()
$356
One-way flights from San Juan to BuffaloSearch for one-way flight options from San Juan to Buffalo. Find affordable one-way fares based on user searches. Data last updated June 23, 2026.
Search for one-way flight options from San Juan to Buffalo. Find affordable one-way fares based on user searches. Data last updated June 23, 2026.
This Southwest deal was found by Cheapflights users on 6/23. 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.
Fri 8/215:00 am
SJU
- BUF
1 stop6h 50m
Southwest
Deal found 6/23![Southwest logo]()
$109
This American Airlines deal was found by Cheapflights users on 6/23. 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.
Thu 11/124:44 pm
SJU
- BUF
1 stop8h 24m
American Airlines
Deal found 6/23![American Airlines logo]()
$112
This American Airlines deal was found by Cheapflights users on 6/23. 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.
Fri 9/1811:51 am
SJU
- BUF
2 stops9h 39m
American Airlines
Deal found 6/23![American Airlines logo]()
$144
This American Airlines deal was found by Cheapflights users on 6/23. 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.
Sat 9/1911:51 am
SJU
- BUF
2 stops22h 27m
American Airlines
Deal found 6/23![American Airlines logo]()
$150
This SmartFares deal was found by Cheapflights users on 6/20. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/56:29 pm
SJU
- BUF
Nonstop4h 38m
JetBlue
Deal found 6/20![JetBlue logo]()
$153
This United Airlines deal was found by Cheapflights users on 6/23. 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 9/194:55 pm
SJU
- BUF
1 stop6h 49m
United Airlines
Deal found 6/23![United Airlines logo]()
$154
This Kiwi.com deal was found by Cheapflights users on 6/21. 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 8/295:37 pm
SJU
- BUF
2 stops40h 52m
Frontier
Deal found 6/21![Frontier logo]()
$155
This American Airlines deal was found by Cheapflights users on 6/23. 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.
Tue 10/202:25 pm
SJU
- BUF
1 stop9h 31m
American Airlines
Deal found 6/23![American Airlines logo]()
$161
This Kiwi.com deal was found by Cheapflights users on 6/20. 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 8/56:26 am
SJU
- BUF
2 stops28h 03m
Frontier
Deal found 6/20![Frontier logo]()
$163
This Kiwi.com deal was found by Cheapflights users on 6/19. 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 8/146:26 am
SJU
- BUF
2 stops29h 07m
Frontier
Deal found 6/19![Frontier logo]()
$164
This Kiwi.com deal was found by Cheapflights users on 6/21. 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 9/156:05 am
SJU
- BUF
1 stop11h 29m
Frontier
Deal found 6/21![Frontier logo]()
$165
Find flight deals from San Juan to Buffalo
Discover tips and strategies to find the most affordable flight options for your journey from San Juan (PR1) to Buffalo (BUF). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 23, 2026.
Round-trip from | $224 (American Airlines) |
|---|---|
One-way from | $109 (Southwest) |
Popular in | November |
Cheapest in | September |
Average price | $352 |
Cheapflights Fare Finder
Customize your flight search to find flights from San Juan to Buffalo 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 June 23, 2026.
Use the filters below to find and compare flights from San Juan to Buffalo that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San JuanBuffalo
SJU - BUF
SJUBUF
San Juan Luis Munoz Marin Intl
Tue 10/6
6:10 am-12:40 pm
1 stop6h 30m
Buffalo
Sat 10/10
3:45 pm-11:50 pm
2 stops8h 05m
$270
San JuanBuffalo
SJU - BUF
SJUBUF
San Juan Luis Munoz Marin Intl
Fri 10/23
6:00 am-2:30 pm
1 stop8h 30m
Buffalo
Tue 10/27
2:25 pm-10:40 pm
1 stop8h 15m
$270
San JuanBuffalo
SJU - BUF
SJUBUF
San Juan Luis Munoz Marin Intl
Wed 11/4
6:45 am-12:10 pm
1 stop6h 25m
Buffalo
Wed 11/11
12:45 pm-10:15 pm
2 stops8h 30m
$306
San JuanBuffalo
SJU - BUF
SJUBUF
San Juan Luis Munoz Marin Intl
Thu 8/13
5:30 am-6:25 pm
1 stop12h 55m
Buffalo
Mon 8/24
3:55 pm-10:50 pm
1 stop6h 55m
$306
San JuanBuffalo
SJU - BUF
SJUBUF
San Juan Luis Munoz Marin Intl
Thu 9/24
1:16 pm-12:12 am
1 stop10h 56m
Buffalo
Tue 9/29
6:05 am-4:49 pm
1 stop10h 44m
$324
San JuanBuffalo
SJU - BUF
SJUBUF
San Juan Luis Munoz Marin Intl
Fri 8/14
5:00 am-11:50 am
1 stop6h 50m
Buffalo
Mon 8/17
5:40 am-4:55 pm
2 stops11h 15m
$347
San JuanBuffalo
SJU - BUF
SJUBUF
San Juan Luis Munoz Marin Intl
Mon 10/19
4:55 pm-11:36 pm
1 stop6h 41m
Buffalo
Sat 10/24
3:52 pm-11:50 pm
1 stop7h 58m
$349
San JuanBuffalo
SJU - BUF
SJUBUF
San Juan Luis Munoz Marin Intl
Thu 8/20
7:30 am-7:19 pm
1 stop11h 49m
Buffalo
Mon 8/24
6:05 am-4:38 pm
1 stop10h 33m
$359
Quickest round-trip
San JuanBuffalo
SJU - BUF
SJUBUF
San Juan Luis Munoz Marin Intl
Mon 8/24
2:20 am-9:41 am
1 stop7h 21m
Buffalo
Wed 8/26
3:52 pm-10:39 pm
1 stop6h 47m
$402
Cheapest one-way
San JuanBuffalo
SJU - BUF
SJUBUF
San Juan Luis Munoz Marin Intl
Thu 8/20
2:35 pm-10:40 pm
1 stop8h 05m
$161
Showing 1-10 of 19 resultsSorted by cheapest first
Best time to book a flight from San Juan to Buffalo
Have a flexible travel schedule? Discover the best time to fly to Buffalo from San Juan with our price prediction graph.
PR1-BUF
SJU-BUF
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 San Juan to Buffalo
PR1-BUF
SJU-BUF
What is the cheapest month to book a flight from San Juan to Buffalo?
Currently, September is the cheapest month in which you can book a flight from San Juan to Buffalo (average of $68). Flying from San Juan to Buffalo in March is currently the most expensive (average of $215). 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 SJU to BUF?
Find hourly flight availability from San Juan to Buffalo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 23, 2026.
When flying from San Juan to Buffalo, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
How much does it cost to fly round-trip from San Juan to Buffalo?
How far ahead should I book a flight from San Juan to Buffalo?
Booking 15 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Juan to Buffalo. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Reviews of airlines servicing Buffalo
Get insights into the airlines that provide service to Buffalo. 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 Buffalo. Reviews last updated June 23, 2026.
Read through reviews of airlines operating flights from San Juan to Buffalo, such as Southwest,Delta, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Overall
7.9
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Food
7.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Overall
7.9
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Food
7.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Overall
7.9
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Food
7.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Overall
7.9
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Food
7.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Overall
7.9
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Food
7.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Overall
7.9
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Related info for your journey
Find useful and relevant information for your journey from San Juan to Buffalo. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Buffalo?
Book flights to Buffalo if you plan to visit one of these locationsLockport
Cheektowaga
Amherst
Batavia
Williamsville
Orchard Park
Eden
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Alternative routes for San Juan to Buffalo
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Other flights to Buffalo
Explore flights to Buffalo departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on June 23, 2026.
Complete your trip
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San Juan and Buffalo flights
Browse other San Juan and Buffalo flight options. Last updated on June 23, 2026.
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Top 5 airlines flying from San Juan to Buffalo
Discover the top 5 airlines that operate flights from San Juan to Buffalo. 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 June 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$102 | Average$294 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$124 | Average$231 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$195 | Average$395 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$215 | Average$483 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$239 | Average$376 | FlexibilityNo cancel fee | On-time62% |