$96+ Cheap flights from Buffalo (BUF) to San Juan
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 3/2. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SJU
Mar 5 — Mar 121
1 adult, Economy
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Find cheap flights from Buffalo to San Juan 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
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Buffalo to San Juan
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Cheapest flights from Buffalo to San JuanExplore the most affordable flight options available from Buffalo to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 3, 2026.
Explore the most affordable flight options available from Buffalo to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 3, 2026.
This Frontier deal was found by Cheapflights users on 2/1. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/2511:44 am
BUF
- SJU
1 stop11h 04m
Frontier
Fri 5/13:08 am
SJU
- BUF
1 stop7h 41m
Frontier
Deal found 2/1![Frontier logo]()
$191
This Priceline deal was found by Cheapflights users on 1/31. 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 5/411:25 am
BUF
- SJU
1 stop14h 36m
Frontier
Mon 5/116:30 am
SJU
- BUF
1 stop12h 43m
Frontier
Deal found 1/31![Frontier logo]()
$192
This Expedia deal was found by Cheapflights users on 2/2. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/612:25 pm
BUF
- SJU
1 stop8h 36m
Multiple Airlines
Mon 5/116:30 am
SJU
- BUF
1 stop12h 43m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$202
This CheapOair deal was found by Cheapflights users on 2/1. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/234:45 pm
BUF
- SJU
1 stop8h 40m
Multiple Airlines
Sat 2/289:00 am
SJU
- BUF
1 stop10h 35m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$207
This Priceline deal was found by Cheapflights users on 2/1. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/218:30 pm
BUF
- SJU
1 stop6h 41m
Multiple Airlines
Wed 2/255:25 pm
SJU
- BUF
1 stop19h 09m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$208
This Cheapflightsfares deal was found by Cheapflights users on 2/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/37:30 pm
BUF
- SJU
1 stop7h 21m
JetBlue
Tue 3/1010:59 pm
SJU
- BUF
1 stop10h 36m
JetBlue
Deal found 2/2![JetBlue logo]()
$212
This KAYAK deal was found by Cheapflights users on 2/1. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/187:39 pm
BUF
- SJU
1 stop6h 28m
JetBlue
Tue 5/263:30 am
SJU
- BUF
1 stop7h 59m
JetBlue
Deal found 2/1![JetBlue logo]()
$213
This CheapOair deal was found by Cheapflights users on 2/1. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/511:17 am
BUF
- SJU
1 stop12h 08m
Multiple Airlines
Wed 3/1110:59 pm
SJU
- BUF
1 stop10h 03m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$221
This Priceline deal was found by Cheapflights users on 2/2. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/197:02 pm
BUF
- SJU
1 stop7h 05m
Multiple Airlines
Sun 4/263:08 am
SJU
- BUF
1 stop16h 05m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$223
This Priceline deal was found by Cheapflights users on 2/2. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/811:25 am
BUF
- SJU
1 stop14h 36m
Frontier
Sun 5/103:08 am
SJU
- BUF
1 stop16h 05m
Frontier
Deal found 2/2![Frontier logo]()
$227
This Southwest deal was found by Cheapflights users on 2/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/611:55 am
BUF
- SJU
1 stop6h 15m
Southwest
Tue 5/125:05 am
SJU
- BUF
1 stop7h 10m
Southwest
Deal found 2/2![Southwest logo]()
$228
This JetBlue deal was found by Cheapflights users on 2/1. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/287:30 pm
BUF
- SJU
1 stop7h 41m
JetBlue
Sat 3/76:05 am
SJU
- BUF
1 stop7h 39m
JetBlue
Deal found 2/1![JetBlue logo]()
$231
Best flights from Buffalo to San JuanDiscover carefully curated flight deals from Buffalo to San Juan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 3, 2026.
Discover carefully curated flight deals from Buffalo to San Juan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 3, 2026.
This Delta deal was found by Cheapflights users on 2/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/2211:52 am
BUF
- SJU
1 stop11h 07m
Delta
Wed 2/252:16 pm
SJU
- BUF
1 stop10h 58m
Delta
Deal found 2/2![Delta logo]()
$212
This Southwest deal was found by Cheapflights users on 2/1. 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 5/92:00 pm
BUF
- SJU
1 stop9h 15m
Southwest
Tue 5/125:05 am
SJU
- BUF
1 stop9h 30m
Southwest
Deal found 2/1![Southwest logo]()
$212
This JetBlue deal was found by Cheapflights users on 2/1. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/287:30 pm
BUF
- SJU
1 stop7h 41m
JetBlue
Sat 3/76:05 am
SJU
- BUF
1 stop7h 39m
JetBlue
Deal found 2/1![JetBlue logo]()
$231
This United Airlines deal was found by Cheapflights users on 2/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/97:00 am
BUF
- SJU
2 stops13h 38m
United Airlines
Fri 5/151:00 am
SJU
- BUF
1 stop9h 04m
United Airlines
Deal found 2/1![United Airlines logo]()
$294
This Delta deal was found by Cheapflights users on 2/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:05 am
BUF
- SJU
1 stop6h 47m
Delta
Wed 5/131:55 pm
SJU
- BUF
1 stop10h 04m
Delta
Deal found 2/2![Delta logo]()
$212
This Southwest deal was found by Cheapflights users on 2/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/412:20 pm
BUF
- SJU
1 stop9h 50m
Southwest
Wed 3/115:15 am
SJU
- BUF
1 stop6h 25m
Southwest
Deal found 2/2![Southwest logo]()
$244
This JetBlue deal was found by Cheapflights users on 2/1. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/47:41 pm
BUF
- SJU
1 stop7h 10m
JetBlue
Mon 3/95:15 am
SJU
- BUF
1 stop7h 40m
JetBlue
Deal found 2/1![JetBlue logo]()
$262
This JetBlue deal was found by Cheapflights users on 1/31. 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.
Sun 3/17:35 pm
BUF
- SJU
1 stop7h 16m
JetBlue
Wed 3/43:25 pm
SJU
- BUF
1 stop9h 07m
JetBlue
Deal found 1/31![JetBlue logo]()
$271
This Delta deal was found by Cheapflights users on 2/1. 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 3/112:05 pm
BUF
- SJU
1 stop8h 07m
Delta
Wed 3/47:00 am
SJU
- BUF
1 stop8h 56m
Delta
Deal found 2/1![Delta logo]()
$281
This Cheapflightsfares deal was found by Cheapflights users on 2/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/247:02 pm
BUF
- SJU
1 stop7h 05m
JetBlue
Mon 4/276:15 pm
SJU
- BUF
Nonstop4h 49m
JetBlue
Deal found 2/2![JetBlue logo]()
$273
This Delta deal was found by Cheapflights users on 2/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/104:47 pm
BUF
- SJU
1 stop6h 28m
Delta
Tue 4/216:15 am
SJU
- BUF
1 stop9h 38m
Delta
Deal found 2/2![Delta logo]()
$282
Last-minute flights from Buffalo to San JuanDiscover last-minute flight deals from Buffalo to San Juan. Data last updated February 3, 2026 and is based on user searches.
Discover last-minute flight deals from Buffalo to San Juan. Data last updated February 3, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 2/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/193:15 pm
BUF
- SJU
1 stop10h 13m
JetBlue
Tue 2/2411:59 pm
SJU
- BUF
1 stop10h 36m
JetBlue
Deal found 2/2![JetBlue logo]()
$247
This Priceline deal was found by Cheapflights users on 2/1. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/218:30 pm
BUF
- SJU
1 stop6h 41m
Multiple Airlines
Wed 2/255:25 pm
SJU
- BUF
1 stop19h 09m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$208
This American Airlines deal was found by Cheapflights users on 1/31. 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.
Sun 2/224:25 pm
BUF
- SJU
1 stop6h 15m
American Airlines
Wed 2/258:40 am
SJU
- BUF
2 stops9h 12m
American Airlines
Deal found 1/31![American Airlines logo]()
$232
This Travelocity deal was found by Cheapflights users on 2/2. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/234:45 pm
BUF
- SJU
1 stop8h 40m
Frontier
Wed 2/253:53 am
SJU
- BUF
1 stop8h 41m
Frontier
Deal found 2/2![Frontier logo]()
$192
This CheapOair deal was found by Cheapflights users on 2/1. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/234:45 pm
BUF
- SJU
1 stop8h 40m
Multiple Airlines
Sat 2/289:00 am
SJU
- BUF
1 stop10h 35m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$207
This JetBlue deal was found by Cheapflights users on 2/1. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/287:30 pm
BUF
- SJU
1 stop7h 41m
JetBlue
Sat 3/76:05 am
SJU
- BUF
1 stop7h 39m
JetBlue
Deal found 2/1![JetBlue logo]()
$231
This Cheapflightsfares deal was found by Cheapflights users on 2/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/37:30 pm
BUF
- SJU
1 stop7h 21m
JetBlue
Tue 3/1010:59 pm
SJU
- BUF
1 stop10h 36m
JetBlue
Deal found 2/2![JetBlue logo]()
$212
This Southwest deal was found by Cheapflights users on 2/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/412:20 pm
BUF
- SJU
1 stop9h 50m
Southwest
Wed 3/115:15 am
SJU
- BUF
1 stop6h 25m
Southwest
Deal found 2/2![Southwest logo]()
$244
This CheapOair deal was found by Cheapflights users on 2/1. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/511:17 am
BUF
- SJU
1 stop12h 08m
Multiple Airlines
Wed 3/1110:59 pm
SJU
- BUF
1 stop10h 03m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$221
This CheapOair deal was found by Cheapflights users on 2/1. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/99:25 pm
BUF
- SJU
1 stop28h 38m
Frontier
Wed 3/256:30 am
SJU
- BUF
1 stop28h 19m
Frontier
Deal found 2/1![Frontier logo]()
$254
This JetBlue deal was found by Cheapflights users on 2/2. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/167:58 pm
BUF
- SJU
1 stop6h 29m
JetBlue
Sat 3/286:20 pm
SJU
- BUF
Nonstop4h 49m
JetBlue
Deal found 2/2![JetBlue logo]()
$237
One-way flights from Buffalo to San JuanSearch for one-way flight options from Buffalo to San Juan. Find affordable one-way fares based on user searches. Data last updated February 3, 2026.
Search for one-way flight options from Buffalo to San Juan. Find affordable one-way fares based on user searches. Data last updated February 3, 2026.
This Frontier deal was found by Cheapflights users on 2/1. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/24:45 pm
BUF
- SJU
1 stop8h 40m
Frontier
Deal found 2/1![Frontier logo]()
$96
This SmartFares deal was found by Cheapflights users on 2/1. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/287:30 pm
BUF
- SJU
1 stop7h 41m
JetBlue
Deal found 2/1![JetBlue logo]()
$97
This Kiwi.com deal was found by Cheapflights users on 2/1. 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.
Mon 3/211:37 am
BUF
- SJU
2 stops26h 54m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$98
This Priceline deal was found by Cheapflights users on 2/1. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/308:08 pm
BUF
- SJU
1 stop28h 32m
Frontier
Deal found 2/1![Frontier logo]()
$102
This Delta deal was found by Cheapflights users on 2/1. 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.
Tue 3/312:05 pm
BUF
- SJU
1 stop8h 07m
Delta
Deal found 2/1![Delta logo]()
$106
This KAYAK deal was found by Cheapflights users on 2/2. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/307:39 pm
BUF
- SJU
1 stop6h 28m
JetBlue
Deal found 2/2![JetBlue logo]()
$107
This Frontier deal was found by Cheapflights users on 2/2. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/511:17 am
BUF
- SJU
1 stop12h 08m
Frontier
Deal found 2/2![Frontier logo]()
$110
This Kiwi.com deal was found by Cheapflights users on 2/1. 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.
Mon 2/231:48 pm
BUF
- SJU
2 stops28h 10m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$111
This American Airlines deal was found by Cheapflights users on 2/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/16:00 am
BUF
- SJU
1 stop16h 40m
American Airlines
Deal found 2/1![American Airlines logo]()
$116
This Frontier deal was found by Cheapflights users on 2/2. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/284:37 pm
BUF
- SJU
1 stop7h 06m
Frontier
Deal found 2/2![Frontier logo]()
$117
This Southwest deal was found by Cheapflights users on 2/1. 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.
Wed 3/181:20 pm
BUF
- SJU
1 stop9h 40m
Southwest
Deal found 2/1![Southwest logo]()
$122
Find flight deals from Buffalo to San Juan
Discover tips and strategies to find the most affordable flight options for your journey from Buffalo (BUF) to San Juan (PR1). 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 February 3, 2026.
Round-trip from | $191 (Frontier) |
|---|---|
One-way from | $96 (Frontier) |
Popular in | December |
Cheapest in | September |
Average price | $368 |
Cheapflights Fare Finder
Customize your flight search to find flights from Buffalo to San Juan 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 February 3, 2026.
Use the filters below to find and compare flights from Buffalo to San Juan that are best for you.
Fly from
Buffalo
Fly to
San Juan
Route
Depart
Return
Price
BuffaloSan Juan
BUF - SJU
BUFSJU
Buffalo
Sun 2/22
11:52 am-11:59 pm
1 stop11h 07m
San Juan Luis Munoz Marin Intl
Wed 2/25
2:16 pm-12:14 am
1 stop10h 58m
$212
BuffaloSan Juan
BUF - SJU
BUFSJU
Buffalo
Sat 5/9
2:00 pm-11:15 pm
1 stop9h 15m
San Juan Luis Munoz Marin Intl
Tue 5/12
5:05 am-2:35 pm
1 stop9h 30m
$212
BuffaloSan Juan
BUF - SJU
BUFSJU
Buffalo
Tue 5/5
6:05 am-12:52 pm
1 stop6h 47m
San Juan Luis Munoz Marin Intl
Wed 5/13
1:55 pm-11:59 pm
1 stop10h 04m
$212
BuffaloSan Juan
BUF - SJU
BUFSJU
Buffalo
Sat 2/28
7:30 pm-4:11 am
1 stop7h 41m
San Juan Luis Munoz Marin Intl
Sat 3/7
6:05 am-12:44 pm
1 stop7h 39m
$231
BuffaloSan Juan
BUF - SJU
BUFSJU
Buffalo
Wed 3/4
12:20 pm-11:10 pm
1 stop9h 50m
San Juan Luis Munoz Marin Intl
Wed 3/11
5:15 am-11:40 am
1 stop6h 25m
$244
BuffaloSan Juan
BUF - SJU
BUFSJU
Buffalo
Wed 3/4
7:41 pm-3:51 am
1 stop7h 10m
San Juan Luis Munoz Marin Intl
Mon 3/9
5:15 am-12:55 pm
1 stop7h 40m
$262
BuffaloSan Juan
BUF - SJU
BUFSJU
Buffalo
Sun 3/1
7:35 pm-3:51 am
1 stop7h 16m
San Juan Luis Munoz Marin Intl
Wed 3/4
3:25 pm-11:32 pm
1 stop9h 07m
$271
BuffaloSan Juan
BUF - SJU
BUFSJU
Buffalo
Fri 4/24
7:02 pm-2:07 am
1 stop7h 05m
San Juan Luis Munoz Marin Intl
Mon 4/27
6:15 pm-11:04 pm
Nonstop4h 49m
$273
BuffaloSan Juan
BUF - SJU
BUFSJU
Buffalo
Sun 3/1
12:05 pm-9:12 pm
1 stop8h 07m
San Juan Luis Munoz Marin Intl
Wed 3/4
7:00 am-2:56 pm
1 stop8h 56m
$281
BuffaloSan Juan
BUF - SJU
BUFSJU
Buffalo
Fri 4/10
4:47 pm-11:15 pm
1 stop6h 28m
San Juan Luis Munoz Marin Intl
Tue 4/21
6:15 am-3:53 pm
1 stop9h 38m
$282
Showing 1-10 of 19 results
Best time to book a flight from Buffalo to San Juan
Have a flexible travel schedule? Discover the best time to fly to San Juan from Buffalo with our price prediction graph.
BUF-PR1
BUF-SJU
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 San Juan
BUF-PR1
BUF-SJU
How far ahead should I book a flight from Buffalo to San Juan?
Use this chart to determine the optimal time to book a round-trip flight from Buffalo to San Juan. Price data was last updated on January 30, 2026.
To ensure you get the cheapest price possible for a flight from Buffalo to San Juan, you should look to book at least 72 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from Buffalo to San Juan?
Currently, February is the cheapest month in which you can book a flight from Buffalo to San Juan (average of $138). Flying from Buffalo to San Juan in December is currently the most expensive (average of $250). 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.
How much does it cost to fly round-trip from Buffalo to San Juan?
Reviews of airlines servicing San Juan
Get insights into the airlines that provide service to San Juan. 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 San Juan. Reviews last updated February 3, 2026.
Get a feel of what it's like to fly with Southwest, Delta, and American Airlines from Buffalo to San Juan by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.5
Boarding
8.1
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Boarding
8.1
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Boarding
8.1
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Boarding
8.1
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Boarding
8.1
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Boarding
8.1
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Related info for your journey
Find useful and relevant information for your journey from Buffalo to San Juan. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Buffalo to San Juan
See prices for flight routes from nearby airports that may be better suited for you.
Top 6 airlines flying from Buffalo to San Juan
Discover the top 6 airlines that operate flights from Buffalo to San Juan. 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 February 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$126 | Average$300 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$129 | Average$260 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$192 | Average$397 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$225 | Average$483 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$231 | Average$404 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$239 | Average$418 | FlexibilityNo cancel fee | On-time69% |