$93+ 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 2/21. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SJU
Mar 10 — Mar 171
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 8, 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 8, 2026.
This Frontier deal was found by Cheapflights users on 2/5. 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 2/234:45 pm
BUF
- SJU
1 stop8h 40m
Frontier
Wed 2/253:53 am
SJU
- BUF
1 stop8h 41m
Frontier
Deal found 2/5![Frontier logo]()
$192
This Priceline deal was found by Cheapflights users on 2/5. 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 2/2210:35 am
BUF
- SJU
1 stop8h 04m
Multiple Airlines
Wed 2/253:53 am
SJU
- BUF
1 stop8h 41m
Multiple Airlines
Deal found 2/5![Multiple Airlines logo]()
$202
This Cheapflightsfares deal was found by Cheapflights users on 2/5. 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 6/212:25 pm
BUF
- SJU
1 stop7h 38m
JetBlue
Wed 6/36:00 am
SJU
- BUF
1 stop9h 10m
JetBlue
Deal found 2/5![JetBlue logo]()
$206
This CheapOair deal was found by Cheapflights users on 2/8. 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 2/2311:17 am
BUF
- SJU
1 stop14h 36m
Multiple Airlines
Thu 2/2611:59 pm
SJU
- BUF
1 stop10h 36m
Multiple Airlines
Deal found 2/8![Multiple Airlines logo]()
$207
This CheapOair deal was found by Cheapflights users on 2/7. 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 2/7![Multiple Airlines logo]()
$208
This Cheapflightsfares deal was found by Cheapflights users on 2/5. 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 2/5![JetBlue logo]()
$212
This CheapOair deal was found by Cheapflights users on 2/8. 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
Frontier
Sat 2/285:25 pm
SJU
- BUF
1 stop17h 27m
Frontier
Deal found 2/8![Frontier logo]()
$213
This Justfly.com deal was found by Cheapflights users on 2/7. 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.
Sat 2/214:37 pm
BUF
- SJU
1 stop19h 50m
Frontier
Fri 2/277:09 pm
SJU
- BUF
1 stop23h 36m
Frontier
Deal found 2/7![Frontier logo]()
$214
This Priceline deal was found by Cheapflights users on 2/8. 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 2/257:35 pm
BUF
- SJU
1 stop7h 16m
Multiple Airlines
Fri 3/63:58 am
SJU
- BUF
1 stop7h 51m
Multiple Airlines
Deal found 2/8![Multiple Airlines logo]()
$216
This United Airlines deal was found by Cheapflights users on 2/5. 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 5/66:00 am
BUF
- SJU
1 stop7h 45m
United Airlines
Tue 5/127:20 am
SJU
- BUF
2 stops13h 41m
United Airlines
Deal found 2/5![United Airlines logo]()
$218
This Mytrip deal was found by Cheapflights users on 2/6. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/214:37 pm
BUF
- SJU
1 stop9h 16m
Frontier
Wed 2/255:25 pm
SJU
- BUF
1 stop19h 09m
Frontier
Deal found 2/6![Frontier logo]()
$219
This United Airlines deal was found by Cheapflights users on 2/8. 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.
Tue 5/266:00 am
BUF
- SJU
1 stop7h 45m
United Airlines
Fri 5/291:25 pm
SJU
- BUF
1 stop9h 30m
United Airlines
Deal found 2/8![United Airlines logo]()
$222
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 8, 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 8, 2026.
This Justfly.com deal was found by Cheapflights users on 2/7. 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 2/2311:17 am
BUF
- SJU
1 stop12h 26m
Frontier
Fri 2/277:09 pm
SJU
- BUF
1 stop23h 36m
Frontier
Deal found 2/7![Frontier logo]()
$208
This Delta deal was found by Cheapflights users on 2/5. 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 2/2212:05 pm
BUF
- SJU
1 stop10h 53m
Delta
Wed 2/256:02 pm
SJU
- BUF
1 stop7h 12m
Delta
Deal found 2/5![Delta logo]()
$212
This KAYAK deal was found by Cheapflights users on 2/6. 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.
Tue 5/197:39 pm
BUF
- SJU
1 stop6h 28m
JetBlue
Wed 5/273:00 pm
SJU
- BUF
1 stop8h 55m
JetBlue
Deal found 2/6![JetBlue logo]()
$213
This Delta deal was found by Cheapflights users on 2/6. 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 5/612:06 pm
BUF
- SJU
1 stop11h 07m
Delta
Thu 5/141:55 pm
SJU
- BUF
1 stop10h 04m
Delta
Deal found 2/6![Delta logo]()
$212
This JetBlue deal was found by Cheapflights users on 2/7. 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 2/223:00 pm
BUF
- SJU
1 stop7h 58m
JetBlue
Thu 2/2611:59 pm
SJU
- BUF
1 stop10h 36m
JetBlue
Deal found 2/7![JetBlue logo]()
$213
This Priceline deal was found by Cheapflights users on 2/6. 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 4/2311:25 am
BUF
- SJU
1 stop11h 23m
Frontier
Sun 4/263:08 am
SJU
- BUF
1 stop16h 05m
Frontier
Deal found 2/6![Frontier logo]()
$213
This Delta deal was found by Cheapflights users on 2/6. 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 5/197:00 am
BUF
- SJU
1 stop9h 23m
Delta
Thu 5/281:55 pm
SJU
- BUF
1 stop10h 04m
Delta
Deal found 2/6![Delta logo]()
$212
This Justfly.com deal was found by Cheapflights users on 2/7. 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.
Sun 2/2211:34 am
BUF
- SJU
1 stop14h 19m
Frontier
Sat 2/285:25 pm
SJU
- BUF
1 stop17h 27m
Frontier
Deal found 2/7![Frontier logo]()
$224
This Delta deal was found by Cheapflights users on 2/7. 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 2/2111:52 am
BUF
- SJU
1 stop11h 04m
Delta
Wed 2/256:02 pm
SJU
- BUF
1 stop7h 12m
Delta
Deal found 2/7![Delta logo]()
$212
This Cheapflightsfares deal was found by Cheapflights users on 2/7. 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.
Sat 4/187:02 pm
BUF
- SJU
1 stop7h 05m
JetBlue
Fri 4/246:15 pm
SJU
- BUF
Nonstop4h 49m
JetBlue
Deal found 2/7![JetBlue logo]()
$238
This Delta deal was found by Cheapflights users on 2/6. 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 5/512:06 pm
BUF
- SJU
1 stop8h 18m
Delta
Thu 5/142:20 pm
SJU
- BUF
1 stop9h 39m
Delta
Deal found 2/6![Delta logo]()
$212
This KAYAK deal was found by Cheapflights users on 2/6. 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.
Fri 5/227:20 am
BUF
- SJU
Nonstop4h 15m
JetBlue
Wed 5/273:00 pm
SJU
- BUF
1 stop8h 55m
JetBlue
Deal found 2/6![JetBlue logo]()
$239
Last-minute flights from Buffalo to San JuanDiscover last-minute flight deals from Buffalo to San Juan. Data last updated February 8, 2026 and is based on user searches.
Discover last-minute flight deals from Buffalo to San Juan. Data last updated February 8, 2026 and is based on user searches.
This Justfly.com deal was found by Cheapflights users on 2/7. 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.
Sat 2/214:37 pm
BUF
- SJU
1 stop19h 50m
Frontier
Fri 2/277:09 pm
SJU
- BUF
1 stop23h 36m
Frontier
Deal found 2/7![Frontier logo]()
$214
This Mytrip deal was found by Cheapflights users on 2/6. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/214:37 pm
BUF
- SJU
1 stop9h 16m
Frontier
Wed 2/255:25 pm
SJU
- BUF
1 stop19h 09m
Frontier
Deal found 2/6![Frontier logo]()
$219
This Priceline deal was found by Cheapflights users on 2/5. 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 2/2210:35 am
BUF
- SJU
1 stop8h 04m
Multiple Airlines
Wed 2/253:53 am
SJU
- BUF
1 stop8h 41m
Multiple Airlines
Deal found 2/5![Multiple Airlines logo]()
$202
This Frontier deal was found by Cheapflights users on 2/5. 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 2/234:45 pm
BUF
- SJU
1 stop8h 40m
Frontier
Wed 2/253:53 am
SJU
- BUF
1 stop8h 41m
Frontier
Deal found 2/5![Frontier logo]()
$192
This CheapOair deal was found by Cheapflights users on 2/8. 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 2/2311:17 am
BUF
- SJU
1 stop14h 36m
Multiple Airlines
Thu 2/2611:59 pm
SJU
- BUF
1 stop10h 36m
Multiple Airlines
Deal found 2/8![Multiple Airlines logo]()
$207
This Justfly.com deal was found by Cheapflights users on 2/7. 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 2/2311:17 am
BUF
- SJU
1 stop12h 26m
Frontier
Fri 2/277:09 pm
SJU
- BUF
1 stop23h 36m
Frontier
Deal found 2/7![Frontier logo]()
$208
This CheapOair deal was found by Cheapflights users on 2/8. 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
Frontier
Sat 2/285:25 pm
SJU
- BUF
1 stop17h 27m
Frontier
Deal found 2/8![Frontier logo]()
$213
This Priceline deal was found by Cheapflights users on 2/8. 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.
Tue 2/247:17 pm
BUF
- SJU
1 stop6h 36m
Multiple Airlines
Tue 3/36:10 am
SJU
- BUF
1 stop7h 50m
Multiple Airlines
Deal found 2/8![Multiple Airlines logo]()
$222
This Priceline deal was found by Cheapflights users on 2/8. 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 2/257:35 pm
BUF
- SJU
1 stop7h 16m
Multiple Airlines
Fri 3/63:58 am
SJU
- BUF
1 stop7h 51m
Multiple Airlines
Deal found 2/8![Multiple Airlines logo]()
$216
This Cheapflightsfares deal was found by Cheapflights users on 2/5. 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 2/5![JetBlue logo]()
$212
This CheapOair deal was found by Cheapflights users on 2/5. 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 stop12h 47m
Frontier
Wed 3/256:30 am
SJU
- BUF
1 stop28h 19m
Frontier
Deal found 2/5![Frontier logo]()
$226
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 8, 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 8, 2026.
This Super.com deal was found by Cheapflights users on 2/7. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/214:37 pm
BUF
- SJU
1 stop9h 16m
Frontier
Deal found 2/7![Frontier logo]()
$93
This Super.com deal was found by Cheapflights users on 2/8. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/71:02 pm
BUF
- SJU
1 stop11h 50m
Frontier
Deal found 2/8![Frontier logo]()
$95
This SmartFares deal was found by Cheapflights users on 2/5. 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.
Sun 2/2210:35 am
BUF
- SJU
1 stop8h 05m
JetBlue
Deal found 2/5![JetBlue logo]()
$97
This Delta deal was found by Cheapflights users on 2/8. 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 5/612:06 pm
BUF
- SJU
1 stop11h 07m
Delta
Deal found 2/8![Delta logo]()
$106
This KAYAK deal was found by Cheapflights users on 2/8. 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.
Wed 3/47:41 pm
BUF
- SJU
1 stop7h 10m
JetBlue
Deal found 2/8![JetBlue logo]()
$107
This Frontier deal was found by Cheapflights users on 2/4. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/79:25 pm
BUF
- SJU
1 stop12h 02m
Frontier
Deal found 2/4![Frontier logo]()
$110
This Kiwi.com deal was found by Cheapflights users on 2/6. 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 3/21:48 pm
BUF
- SJU
2 stops28h 10m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$111
This United Airlines deal was found by Cheapflights users on 2/8. 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.
Tue 4/77:00 am
BUF
- SJU
2 stops13h 38m
United Airlines
Deal found 2/8![United Airlines logo]()
$112
This American Airlines deal was found by Cheapflights users on 2/8. 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 5/65:30 am
BUF
- SJU
2 stops12h 40m
American Airlines
Deal found 2/8![American Airlines logo]()
$116
This Orbitz deal was found by Cheapflights users on 2/7. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/1911:07 am
BUF
- SJU
1 stop14h 18m
Frontier
Deal found 2/7![Frontier logo]()
$117
This American Airlines deal was found by Cheapflights users on 2/4. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/16:33 am
BUF
- SJU
1 stop15h 58m
American Airlines
Deal found 2/4![American Airlines logo]()
$119
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 8, 2026.
Round-trip from | $192 (Frontier) |
|---|---|
One-way from | $93 (Super.com) |
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 8, 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
Mon 2/23
11:17 am-12:43 am
1 stop12h 26m
San Juan Luis Munoz Marin Intl
Fri 2/27
7:09 pm-5:45 pm
1 stop23h 36m
$208
BuffaloSan Juan
BUF - SJU
BUFSJU
Buffalo
Sun 2/22
12:05 pm-11:58 pm
1 stop10h 53m
San Juan Luis Munoz Marin Intl
Wed 2/25
6:02 pm-12:14 am
1 stop7h 12m
$212
BuffaloSan Juan
BUF - SJU
BUFSJU
Buffalo
Wed 5/6
12:06 pm-11:13 pm
1 stop11h 07m
San Juan Luis Munoz Marin Intl
Thu 5/14
1:55 pm-11:59 pm
1 stop10h 04m
$212
BuffaloSan Juan
BUF - SJU
BUFSJU
Buffalo
Tue 5/19
7:00 am-4:23 pm
1 stop9h 23m
San Juan Luis Munoz Marin Intl
Thu 5/28
1:55 pm-11:59 pm
1 stop10h 04m
$212
BuffaloSan Juan
BUF - SJU
BUFSJU
Buffalo
Sat 2/21
11:52 am-11:56 pm
1 stop11h 04m
San Juan Luis Munoz Marin Intl
Wed 2/25
6:02 pm-12:14 am
1 stop7h 12m
$212
BuffaloSan Juan
BUF - SJU
BUFSJU
Buffalo
Tue 5/5
12:06 pm-8:24 pm
1 stop8h 18m
San Juan Luis Munoz Marin Intl
Thu 5/14
2:20 pm-11:59 pm
1 stop9h 39m
$212
BuffaloSan Juan
BUF - SJU
BUFSJU
Buffalo
Tue 5/19
7:39 pm-2:07 am
1 stop6h 28m
San Juan Luis Munoz Marin Intl
Wed 5/27
3:00 pm-11:55 pm
1 stop8h 55m
$213
BuffaloSan Juan
BUF - SJU
BUFSJU
Buffalo
Sun 2/22
3:00 pm-11:58 pm
1 stop7h 58m
San Juan Luis Munoz Marin Intl
Thu 2/26
11:59 pm-9:35 am
1 stop10h 36m
$213
BuffaloSan Juan
BUF - SJU
BUFSJU
Buffalo
Thu 4/23
11:25 am-10:48 pm
1 stop11h 23m
San Juan Luis Munoz Marin Intl
Sun 4/26
3:08 am-7:13 pm
1 stop16h 05m
$213
BuffaloSan Juan
BUF - SJU
BUFSJU
Buffalo
Sun 2/22
11:34 am-2:53 am
1 stop14h 19m
San Juan Luis Munoz Marin Intl
Sat 2/28
5:25 pm-9:52 am
1 stop17h 27m
$224
Showing 1-10 of 22 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.
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 8, 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.
Overall
8.0
Food
7.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Food
7.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Food
7.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Food
7.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Food
7.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Food
7.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
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.
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Complete your trip
Complete your trip to San Juan by adding a car rental and/or hotel reservation to your travel itinerary.
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Find flights from Buffalo to San Juan, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Buffalo and San Juan flights
Browse other Buffalo and San Juan flight options. Last updated on February 8, 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 February 8, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$126 | Average$298 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$129 | Average$262 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$192 | Average$392 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$225 | Average$478 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$231 | Average$398 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$239 | Average$418 | FlexibilityNo cancel fee | On-time69% |