$98+ 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 4/10. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SJU
Apr 22 — Apr 291
Round-trip
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
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 San Juan are usually found in September or May, booked 88 days in advance, depart on a Tuesday or Wednesday and return on a Monday
Cheap flight deals from Buffalo to San Juan
Cheapest
Best
Last-minute
One-way
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 March 23, 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 March 23, 2026.
This CheapOair deal was found by Cheapflights users on 3/23. 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.
Mon 6/17:52 pm
BUF
- SJU
1 stop27h 30m
Frontier
Sun 6/79:00 am
SJU
- BUF
1 stop11h 04m
Frontier
Deal found 3/23![Frontier logo]()
$231
This Delta deal was found by Cheapflights users on 3/19. 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.
Tue 4/146:00 am
BUF
- SJU
1 stop7h 25m
Delta
Thu 4/301:25 pm
SJU
- BUF
1 stop11h 25m
Delta
Deal found 3/19![Delta logo]()
$232
This Mytrip deal was found by Cheapflights users on 3/22. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/187:31 pm
BUF
- SJU
1 stop6h 37m
Frontier
Mon 5/256:09 pm
SJU
- BUF
1 stop24h 50m
Frontier
Deal found 3/22![Frontier logo]()
$235
This Priceline deal was found by Cheapflights users on 3/20. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/209:25 pm
BUF
- SJU
1 stop23h 06m
Frontier
Fri 4/246:30 am
SJU
- BUF
1 stop28h 19m
Frontier
Deal found 3/20![Frontier logo]()
$239
This Priceline deal was found by Cheapflights users on 3/19. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/27:20 am
BUF
- SJU
Nonstop3h 54m
Multiple Airlines
Thu 5/78:30 am
SJU
- BUF
1 stop11h 34m
Multiple Airlines
Deal found 3/19![Multiple Airlines logo]()
$256
This Priceline deal was found by Cheapflights users on 3/18. 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.
Sat 4/1111:54 am
BUF
- SJU
1 stop14h 07m
Multiple Airlines
Fri 4/176:30 pm
SJU
- BUF
Nonstop4h 49m
Multiple Airlines
Deal found 3/18![Multiple Airlines logo]()
$259
This United Airlines deal was found by Cheapflights users on 3/18. 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.
Sat 4/117:00 am
BUF
- SJU
2 stops13h 38m
United Airlines
Thu 4/161:00 am
SJU
- BUF
2 stops9h 00m
United Airlines
Deal found 3/18![United Airlines logo]()
$262
This Priceline deal was found by Cheapflights users on 3/20. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1710:52 am
BUF
- SJU
1 stop28h 45m
Multiple Airlines
Fri 4/246:30 pm
SJU
- BUF
Nonstop4h 49m
Multiple Airlines
Deal found 3/20![Multiple Airlines logo]()
$265
This Frontier deal was found by Cheapflights users on 3/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/299:25 pm
BUF
- SJU
1 stop11h 29m
Frontier
Tue 4/73:16 am
SJU
- BUF
1 stop7h 11m
Frontier
Deal found 3/21![Frontier logo]()
$266
This United Airlines deal was found by Cheapflights users on 3/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/211:02 am
BUF
- SJU
2 stops10h 22m
United Airlines
Wed 5/61:00 am
SJU
- BUF
1 stop8h 50m
United Airlines
Deal found 3/19![United Airlines logo]()
$268
This Priceline deal was found by Cheapflights users on 3/22. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/411:19 am
BUF
- SJU
1 stop14h 42m
Multiple Airlines
Fri 5/157:00 pm
SJU
- BUF
Nonstop4h 48m
Multiple Airlines
Deal found 3/22![Multiple Airlines logo]()
$271
This American Airlines deal was found by Cheapflights users on 3/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2811:49 am
BUF
- SJU
2 stops10h 16m
American Airlines
Wed 5/66:00 am
SJU
- BUF
1 stop9h 29m
American Airlines
Deal found 3/19![American Airlines logo]()
$272
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 March 23, 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 March 23, 2026.
This United Airlines deal was found by Cheapflights users on 3/18. 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.
Fri 5/1511:02 am
BUF
- SJU
1 stop9h 32m
United Airlines
Wed 5/271:00 am
SJU
- BUF
2 stops8h 51m
United Airlines
Deal found 3/18![United Airlines logo]()
$347
This Southwest deal was found by Cheapflights users on 3/18. 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.
Tue 5/264:00 pm
BUF
- SJU
1 stop6h 40m
Southwest
Thu 6/115:15 pm
SJU
- BUF
1 stop6h 55m
Southwest
Deal found 3/18![Southwest logo]()
$363
This United Airlines deal was found by Cheapflights users on 3/22. 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.
Sat 4/116:00 am
BUF
- SJU
2 stops14h 34m
United Airlines
Tue 4/211:00 am
SJU
- BUF
2 stops16h 16m
United Airlines
Deal found 3/22![United Airlines logo]()
$372
This Southwest deal was found by Cheapflights users on 3/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/153:00 pm
BUF
- SJU
1 stop8h 45m
Southwest
Sun 7/195:20 am
SJU
- BUF
1 stop6h 25m
Southwest
Deal found 3/19![Southwest logo]()
$388
This United Airlines deal was found by Cheapflights users on 3/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/211:02 am
BUF
- SJU
2 stops10h 22m
United Airlines
Sun 5/101:00 am
SJU
- BUF
2 stops8h 53m
United Airlines
Deal found 3/21![United Airlines logo]()
$372
This Southwest deal was found by Cheapflights users on 3/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/162:00 pm
BUF
- SJU
1 stop9h 15m
Southwest
Sat 5/231:45 pm
SJU
- BUF
2 stops9h 40m
Southwest
Deal found 3/19![Southwest logo]()
$398
This United Airlines deal was found by Cheapflights users on 3/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/126:00 am
BUF
- SJU
2 stops14h 34m
United Airlines
Wed 4/151:00 am
SJU
- BUF
2 stops12h 13m
United Airlines
Deal found 3/21![United Airlines logo]()
$372
This Southwest deal was found by Cheapflights users on 3/20. 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.
Sun 5/102:55 pm
BUF
- SJU
2 stops8h 40m
Southwest
Mon 6/12:00 pm
SJU
- BUF
2 stops9h 20m
Southwest
Deal found 3/20![Southwest logo]()
$403
This United Airlines deal was found by Cheapflights users on 3/22. 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.
Sun 5/36:10 am
BUF
- SJU
1 stop6h 24m
United Airlines
Wed 5/61:00 am
SJU
- BUF
2 stops8h 53m
United Airlines
Deal found 3/22![United Airlines logo]()
$373
This Southwest deal was found by Cheapflights users on 3/22. 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.
Fri 9/116:00 am
BUF
- SJU
1 stop7h 45m
Southwest
Mon 9/145:00 am
SJU
- BUF
2 stops10h 15m
Southwest
Deal found 3/22![Southwest logo]()
$413
This United Airlines deal was found by Cheapflights users on 3/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/157:00 am
BUF
- SJU
2 stops13h 38m
United Airlines
Tue 4/211:00 am
SJU
- BUF
2 stops16h 16m
United Airlines
Deal found 3/20![United Airlines logo]()
$397
This Southwest deal was found by Cheapflights users on 3/20. 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 6/912:50 pm
BUF
- SJU
2 stops10h 55m
Southwest
Thu 6/185:00 am
SJU
- BUF
2 stops10h 25m
Southwest
Deal found 3/20![Southwest logo]()
$413
Last-minute flights from Buffalo to San JuanDiscover last-minute flight deals from Buffalo to San Juan. Data last updated March 23, 2026 and is based on user searches.
Discover last-minute flight deals from Buffalo to San Juan. Data last updated March 23, 2026 and is based on user searches.
This Priceline deal was found by Cheapflights users on 3/20. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/209:25 pm
BUF
- SJU
1 stop23h 06m
Frontier
Fri 4/246:30 am
SJU
- BUF
1 stop28h 19m
Frontier
Deal found 3/20![Frontier logo]()
$239
This Priceline deal was found by Cheapflights users on 3/22. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/289:25 pm
BUF
- SJU
1 stop28h 48m
Frontier
Sat 4/43:23 am
SJU
- BUF
1 stop7h 36m
Frontier
Deal found 3/22![Frontier logo]()
$281
This Frontier deal was found by Cheapflights users on 3/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/299:25 pm
BUF
- SJU
1 stop11h 29m
Frontier
Tue 4/73:16 am
SJU
- BUF
1 stop7h 11m
Frontier
Deal found 3/21![Frontier logo]()
$266
This Frontier deal was found by Cheapflights users on 3/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/299:25 pm
BUF
- SJU
1 stop11h 29m
Frontier
Fri 4/33:16 am
SJU
- BUF
1 stop7h 43m
Frontier
Deal found 3/21![Frontier logo]()
$288
This Priceline deal was found by Cheapflights users on 3/18. 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.
Sat 4/1111:54 am
BUF
- SJU
1 stop14h 07m
Multiple Airlines
Fri 4/176:30 pm
SJU
- BUF
Nonstop4h 49m
Multiple Airlines
Deal found 3/18![Multiple Airlines logo]()
$259
This United Airlines deal was found by Cheapflights users on 3/18. 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.
Sat 4/117:00 am
BUF
- SJU
2 stops13h 38m
United Airlines
Thu 4/161:00 am
SJU
- BUF
2 stops9h 00m
United Airlines
Deal found 3/18![United Airlines logo]()
$262
This United Airlines deal was found by Cheapflights users on 3/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/1210:50 am
BUF
- SJU
1 stop9h 44m
United Airlines
Wed 4/151:00 am
SJU
- BUF
2 stops9h 00m
United Airlines
Deal found 3/21![United Airlines logo]()
$282
This Delta deal was found by Cheapflights users on 3/19. 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.
Tue 4/146:00 am
BUF
- SJU
1 stop7h 25m
Delta
Thu 4/301:25 pm
SJU
- BUF
1 stop11h 25m
Delta
Deal found 3/19![Delta logo]()
$232
This CheapOair deal was found by Cheapflights users on 3/19. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/157:20 am
BUF
- SJU
Nonstop3h 54m
Multiple Airlines
Wed 4/223:19 pm
SJU
- BUF
1 stop28h 07m
Multiple Airlines
Deal found 3/19![Multiple Airlines logo]()
$277
This Priceline deal was found by Cheapflights users on 3/20. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1710:52 am
BUF
- SJU
1 stop28h 45m
Multiple Airlines
Fri 4/246:30 pm
SJU
- BUF
Nonstop4h 49m
Multiple Airlines
Deal found 3/20![Multiple Airlines logo]()
$265
This American Airlines deal was found by Cheapflights users on 3/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2811:49 am
BUF
- SJU
2 stops10h 16m
American Airlines
Wed 5/66:00 am
SJU
- BUF
1 stop9h 29m
American Airlines
Deal found 3/19![American Airlines logo]()
$272
This Frontier deal was found by Cheapflights users on 3/23. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/3011:19 am
BUF
- SJU
1 stop11h 37m
Frontier
Thu 5/219:00 am
SJU
- BUF
1 stop11h 04m
Frontier
Deal found 3/23![Frontier logo]()
$289
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 March 23, 2026.
Search for one-way flight options from Buffalo to San Juan. Find affordable one-way fares based on user searches. Data last updated March 23, 2026.
This Frontier deal was found by Cheapflights users on 3/23. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/104:45 pm
BUF
- SJU
1 stop6h 55m
Frontier
Deal found 3/23![Frontier logo]()
$98
This Travelocity deal was found by Cheapflights users on 3/23. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/68:16 pm
BUF
- SJU
1 stop29h 45m
Frontier
Deal found 3/23![Frontier logo]()
$104
This Priceline deal was found by Cheapflights users on 3/20. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/198:18 pm
BUF
- SJU
1 stop27h 25m
Frontier
Deal found 3/20![Frontier logo]()
$105
This Frontier deal was found by Cheapflights users on 3/20. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1811:44 am
BUF
- SJU
1 stop11h 04m
Frontier
Deal found 3/20![Frontier logo]()
$106
This Orbitz deal was found by Cheapflights users on 3/21. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1710:52 am
BUF
- SJU
1 stop23h 02m
Frontier
Deal found 3/21![Frontier logo]()
$112
This Delta deal was found by Cheapflights users on 3/19. 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.
Tue 4/146:00 am
BUF
- SJU
1 stop7h 25m
Delta
Deal found 3/19![Delta logo]()
$116
This Trip.com deal was found by Cheapflights users on 3/22. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/62:49 pm
BUF
- SJU
2 stops11h 19m
Frontier
Deal found 3/22![Frontier logo]()
$122
This CheapOair deal was found by Cheapflights users on 3/23. 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.
Thu 6/48:49 pm
BUF
- SJU
1 stop20h 23m
Frontier
Deal found 3/23![Frontier logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 3/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/211:56 pm
BUF
- SJU
2 stops28h 03m
Frontier
Deal found 3/23![Frontier logo]()
$129
This Flightnetwork deal was found by Cheapflights users on 3/23. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/307:41 pm
BUF
- SJU
1 stop14h 46m
Frontier
Deal found 3/23![Frontier logo]()
$130
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 March 23, 2026.
Round-trip from | $230 (American Airlines) |
|---|---|
One-way from | $98 (Frontier) |
Popular in | December |
Cheapest in | September |
Average price | $338 |
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 March 23, 2026.
Use the filters below to find and compare flights from Buffalo to San Juan that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BuffaloSan Juan
BUF - SJU
BUFSJU
Buffalo
Fri 5/15
11:02 am-8:34 pm
1 stop9h 32m
San Juan Luis Munoz Marin Intl
Wed 5/27
1:00 am-9:51 am
2 stops8h 51m
$347
Quickest round-trip
BuffaloSan Juan
BUF - SJU
BUFSJU
Buffalo
Tue 5/26
4:00 pm-10:40 pm
1 stop6h 40m
San Juan Luis Munoz Marin Intl
Thu 6/11
5:15 pm-12:10 am
1 stop6h 55m
$363
BuffaloSan Juan
BUF - SJU
BUFSJU
Buffalo
Sat 4/11
6:00 am-8:34 pm
2 stops14h 34m
San Juan Luis Munoz Marin Intl
Tue 4/21
1:00 am-5:16 pm
2 stops16h 16m
$372
BuffaloSan Juan
BUF - SJU
BUFSJU
Buffalo
Sat 5/2
11:02 am-9:24 pm
2 stops10h 22m
San Juan Luis Munoz Marin Intl
Sun 5/10
1:00 am-9:53 am
2 stops8h 53m
$372
BuffaloSan Juan
BUF - SJU
BUFSJU
Buffalo
Sun 4/12
6:00 am-8:34 pm
2 stops14h 34m
San Juan Luis Munoz Marin Intl
Wed 4/15
1:00 am-1:13 pm
2 stops12h 13m
$372
BuffaloSan Juan
BUF - SJU
BUFSJU
Buffalo
Sun 5/3
6:10 am-12:34 pm
1 stop6h 24m
San Juan Luis Munoz Marin Intl
Wed 5/6
1:00 am-9:53 am
2 stops8h 53m
$373
BuffaloSan Juan
BUF - SJU
BUFSJU
Buffalo
Wed 7/15
3:00 pm-11:45 pm
1 stop8h 45m
San Juan Luis Munoz Marin Intl
Sun 7/19
5:20 am-11:45 am
1 stop6h 25m
$388
BuffaloSan Juan
BUF - SJU
BUFSJU
Buffalo
Wed 4/15
7:00 am-8:38 pm
2 stops13h 38m
San Juan Luis Munoz Marin Intl
Tue 4/21
1:00 am-5:16 pm
2 stops16h 16m
$397
BuffaloSan Juan
BUF - SJU
BUFSJU
Buffalo
Sat 5/16
2:00 pm-11:15 pm
1 stop9h 15m
San Juan Luis Munoz Marin Intl
Sat 5/23
1:45 pm-11:25 pm
2 stops9h 40m
$398
BuffaloSan Juan
BUF - SJU
BUFSJU
Buffalo
Sun 5/10
2:55 pm-11:35 pm
2 stops8h 40m
San Juan Luis Munoz Marin Intl
Mon 6/1
2:00 pm-11:20 pm
2 stops9h 20m
$403
Showing 1-10 of 19 resultsSorted by cheapest first
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 March 13, 2026.
To ensure you get the cheapest price possible for a flight from Buffalo to San Juan, you should look to book at least 88 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, August is the cheapest month in which you can book a flight from Buffalo to San Juan (average of $129). Flying from Buffalo to San Juan in December is currently the most expensive (average of $257). 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 March 23, 2026.
Get a feel of what it's like to fly with Southwest,Delta, andJetBlue 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.
Boarding
8.1
Overall
8.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Overall
8.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Overall
8.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Overall
8.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Overall
8.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Overall
8.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
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 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.
Search flights from Buffalo to San Juan by cabin class
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 March 23, 2026.
Other flights from Buffalo
Browse through other flights departing from Buffalo. Flights are based on user searches made on Cheapflights and were last updated on March 23, 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 March 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$120 | Average$266 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$129 | Average$267 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$140 | Average$416 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$211 | Average$413 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$225 | Average$448 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$231 | Average$400 | FlexibilityNo cancel fee | On-time71% |