$103+ 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 8/28. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SJU
Sep 9 — Sep 161
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 March or April, booked 88 days in advance, depart on a Thursday or Tuesday and return on a Tuesday
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 August 10, 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 August 10, 2026.
This United Airlines deal was found by Cheapflights users on 8/5. 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.
Tue 11/36:30 am -
2 stops13h 54m
Fri 11/62:05 am -
1 stop9h 03m
Deal found 8/5![United Airlines logo]()
$292
This United Airlines deal was found by Cheapflights users on 8/5. 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.
Tue 9/226:00 am -
1 stop7h 53m
Thu 9/244:55 pm -
1 stop6h 55m
Deal found 8/5![United Airlines logo]()
$295
This American Airlines deal was found by Cheapflights users on 8/5. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/67:42 pm -
1 stop16h 21m
Wed 11/186:28 am -
1 stop10h 22m
Deal found 8/5![American Airlines logo]()
$296
This Cheapflightsfares deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/187:55 am -
Nonstop4h 33m
Mon 11/232:30 pm -
Nonstop4h 41m
Deal found 8/9![JetBlue logo]()
$298
This American Airlines deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:51 pm -
1 stop16h 29m
Wed 10/212:18 pm -
2 stops9h 41m
Deal found 8/9![American Airlines logo]()
$300
This American Airlines deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/76:50 am -
1 stop8h 01m
Mon 9/1410:16 am -
2 stops10h 40m
Deal found 8/9![American Airlines logo]()
$301
This American Airlines deal was found by Cheapflights users on 8/8. 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.
Sat 9/510:43 am -
2 stops11h 12m
Sat 9/126:00 am -
2 stops15h 57m
Deal found 8/8![American Airlines logo]()
$302
This American Airlines deal was found by Cheapflights users on 8/9. 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 9/96:10 am -
1 stop8h 40m
Sun 9/132:22 pm -
1 stop9h 18m
Deal found 8/9![American Airlines logo]()
$303
This Southwest deal was found by Cheapflights users on 8/5. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/144:35 pm -
1 stop7h 20m
Sat 9/195:55 am -
2 stops10h 50m
Deal found 8/5![Southwest logo]()
$306
This FlightHub deal was found by Cheapflights users on 8/9. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:56 pm -
1 stop6h 57m
Wed 10/216:15 pm -
Nonstop4h 35m
Deal found 8/9![Multiple Airlines logo]()
$307
This United Airlines deal was found by Cheapflights users on 8/5. 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.
Fri 9/116:00 am -
1 stop7h 45m
Thu 9/174:55 pm -
1 stop6h 49m
Deal found 8/5![United Airlines logo]()
$308
This American Airlines deal was found by Cheapflights users on 8/5. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/286:50 am -
1 stop17h 09m
Tue 9/87:30 am -
1 stop10h 32m
Deal found 8/5![American Airlines logo]()
$309
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 August 10, 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 August 10, 2026.
This United Airlines deal was found by Cheapflights users on 8/5. 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.
Tue 9/226:00 am -
1 stop7h 53m
Thu 9/244:55 pm -
1 stop6h 55m
Deal found 8/5![United Airlines logo]()
$295
This Southwest deal was found by Cheapflights users on 8/5. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:50 am -
1 stop9h 35m
Sun 9/205:00 am -
1 stop6h 40m
Deal found 8/5![Southwest logo]()
$306
This Delta deal was found by Cheapflights users on 8/8. 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.
Sun 1/246:00 am -
1 stop7h 31m
Fri 2/53:55 pm -
1 stop9h 00m
Deal found 8/8![Delta logo]()
$330
This JetBlue deal was found by Cheapflights users on 8/6. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/117:15 am -
1 stop6h 24m
Tue 9/1511:15 am -
1 stop9h 04m
Deal found 8/6![JetBlue logo]()
$332
This United Airlines deal was found by Cheapflights users on 8/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/126:00 am -
1 stop6h 11m
Sat 1/237:45 am -
2 stops15h 52m
Deal found 8/4![United Airlines logo]()
$301
This Southwest deal was found by Cheapflights users on 8/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1911:05 am -
1 stop13h 15m
Sat 10/245:40 am -
1 stop8h 55m
Deal found 8/8![Southwest logo]()
$315
This Delta deal was found by Cheapflights users on 8/8. 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 11/113:59 pm -
1 stop6h 56m
Sat 11/147:15 am -
1 stop9h 03m
Deal found 8/8![Delta logo]()
$330
This United Airlines deal was found by Cheapflights users on 8/5. 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 9/167:00 am -
2 stops13h 38m
Sat 9/191:00 am -
2 stops8h 48m
Deal found 8/5![United Airlines logo]()
$308
This Southwest deal was found by Cheapflights users on 8/4. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/34:35 pm -
1 stop7h 20m
Thu 9/103:20 pm -
1 stop6h 35m
Deal found 8/4![Southwest logo]()
$323
This United Airlines deal was found by Cheapflights users on 8/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/116:00 am -
1 stop7h 45m
Fri 9/184:55 pm -
1 stop6h 49m
Deal found 8/4![United Airlines logo]()
$308
This United Airlines deal was found by Cheapflights users on 8/8. 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.
Mon 10/197:00 am -
1 stop7h 44m
Sat 10/247:00 am -
2 stops16h 12m
Deal found 8/8![United Airlines logo]()
$330
This United Airlines deal was found by Cheapflights users on 8/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/232:44 pm -
2 stops8h 52m
Wed 1/278:10 am -
1 stop6h 36m
Deal found 8/7![United Airlines logo]()
$330
Last-minute flights from Buffalo to San JuanDiscover last-minute flight deals from Buffalo to San Juan. Data last updated August 10, 2026 and is based on user searches.
Discover last-minute flight deals from Buffalo to San Juan. Data last updated August 10, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 8/5. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/244:49 pm -
1 stop7h 10m
Wed 8/261:38 pm -
2 stops9h 58m
Deal found 8/5![American Airlines logo]()
$316
This American Airlines deal was found by Cheapflights users on 8/5. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/286:50 am -
1 stop17h 09m
Tue 9/87:30 am -
1 stop10h 32m
Deal found 8/5![American Airlines logo]()
$309
This Cheapflightsfares deal was found by Cheapflights users on 8/9. 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 8/297:00 am -
Nonstop4h 40m
Wed 9/26:19 pm -
Nonstop4h 38m
Deal found 8/9![JetBlue logo]()
$298
This American Airlines deal was found by Cheapflights users on 8/8. 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.
Sat 9/510:43 am -
2 stops11h 12m
Sat 9/126:00 am -
2 stops15h 57m
Deal found 8/8![American Airlines logo]()
$302
This Cheapflightsfares deal was found by Cheapflights users on 8/7. 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 9/57:00 am -
Nonstop4h 40m
Sat 9/121:15 pm -
Nonstop4h 34m
Deal found 8/7![JetBlue logo]()
$314
This American Airlines deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/76:50 am -
1 stop8h 01m
Mon 9/1410:16 am -
2 stops10h 40m
Deal found 8/9![American Airlines logo]()
$301
This American Airlines deal was found by Cheapflights users on 8/9. 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 9/96:10 am -
1 stop8h 40m
Sun 9/132:22 pm -
1 stop9h 18m
Deal found 8/9![American Airlines logo]()
$303
This United Airlines deal was found by Cheapflights users on 8/5. 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.
Fri 9/116:00 am -
1 stop7h 45m
Thu 9/174:55 pm -
1 stop6h 49m
Deal found 8/5![United Airlines logo]()
$308
This Priceline deal was found by Cheapflights users on 8/6. 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.
Sat 9/1211:05 am -
Nonstop4h 41m
Mon 9/212:57 am -
1 stop14h 52m
Deal found 8/6![Multiple Airlines logo]()
$317
This Southwest deal was found by Cheapflights users on 8/5. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/144:35 pm -
1 stop7h 20m
Sat 9/195:55 am -
2 stops10h 50m
Deal found 8/5![Southwest logo]()
$306
This Southwest deal was found by Cheapflights users on 8/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/181:40 pm -
1 stop9h 30m
Tue 9/222:25 pm -
1 stop6h 45m
Deal found 8/7![Southwest logo]()
$315
This United Airlines deal was found by Cheapflights users on 8/5. 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.
Tue 9/226:00 am -
1 stop7h 53m
Thu 9/244:55 pm -
1 stop6h 55m
Deal found 8/5![United Airlines logo]()
$295
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 August 10, 2026.
Search for one-way flight options from Buffalo to San Juan. Find affordable one-way fares based on user searches. Data last updated August 10, 2026.
This Super.com deal was found by Cheapflights users on 8/5. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/288:42 am -
1 stop6h 22m
Deal found 8/5![JetBlue logo]()
$103
This American Airlines deal was found by Cheapflights users on 8/4. 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.
Sat 9/126:30 am -
1 stop8h 20m
Deal found 8/4![American Airlines logo]()
$109
This American Airlines deal was found by Cheapflights users on 8/4. 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.
Sat 11/1410:41 am -
2 stops9h 32m
Deal found 8/4![American Airlines logo]()
$110
This American Airlines deal was found by Cheapflights users on 8/4. 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.
Wed 9/21:03 pm -
2 stops10h 56m
Deal found 8/4![American Airlines logo]()
$114
This American Airlines deal was found by Cheapflights users on 8/4. 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.
Wed 10/286:00 am -
2 stops9h 38m
Deal found 8/4![American Airlines logo]()
$117
This American Airlines deal was found by Cheapflights users on 8/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/611:31 am -
1 stop12h 44m
Deal found 8/7![American Airlines logo]()
$118
This American Airlines deal was found by Cheapflights users on 8/5. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/51:03 pm -
1 stop9h 21m
Deal found 8/5![American Airlines logo]()
$125
This Super.com deal was found by Cheapflights users on 8/4. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/34:16 pm -
1 stop9h 50m
Deal found 8/4![JetBlue logo]()
$130
This Super.com deal was found by Cheapflights users on 8/8. 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.
Mon 9/76:00 am -
Nonstop4h 32m
Deal found 8/8![JetBlue logo]()
$136
This Kiwi.com deal was found by Cheapflights users on 8/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/51:40 pm -
2 stops25h 37m
Deal found 8/7![Frontier logo]()
$137
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 August 10, 2026.
Round-trip from | $292 (United Airlines) |
|---|---|
One-way from | $103 (Super.com) |
Popular in | December |
Cheapest in | March |
Average price | $360 |
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 August 10, 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 Buffalo - SJU San Juan Luis Munoz Marin Intl
BUFSJU
Buffalo
Tue 9/22
6:00 am-1:53 pm
1 stop7h 53m
San Juan Luis Munoz Marin Intl
Thu 9/24
4:55 pm-11:50 pm
1 stop6h 55m
$295
BuffaloSan Juan
BUF Buffalo - SJU San Juan Luis Munoz Marin Intl
BUFSJU
Buffalo
Tue 1/12
6:00 am-1:11 pm
1 stop6h 11m
San Juan Luis Munoz Marin Intl
Sat 1/23
7:45 am-10:37 pm
2 stops15h 52m
$301
BuffaloSan Juan
BUF Buffalo - SJU San Juan Luis Munoz Marin Intl
BUFSJU
Buffalo
Wed 9/16
6:50 am-4:25 pm
1 stop9h 35m
San Juan Luis Munoz Marin Intl
Sun 9/20
5:00 am-11:40 am
1 stop6h 40m
$306
BuffaloSan Juan
BUF Buffalo - SJU San Juan Luis Munoz Marin Intl
BUFSJU
Buffalo
Wed 9/16
7:00 am-8:38 pm
2 stops13h 38m
San Juan Luis Munoz Marin Intl
Sat 9/19
1:00 am-9:48 am
2 stops8h 48m
$308
BuffaloSan Juan
BUF Buffalo - SJU San Juan Luis Munoz Marin Intl
BUFSJU
Buffalo
Fri 9/11
6:00 am-1:45 pm
1 stop7h 45m
San Juan Luis Munoz Marin Intl
Fri 9/18
4:55 pm-11:44 pm
1 stop6h 49m
$308
BuffaloSan Juan
BUF Buffalo - SJU San Juan Luis Munoz Marin Intl
BUFSJU
Buffalo
Mon 10/19
11:05 am-12:20 am
1 stop13h 15m
San Juan Luis Munoz Marin Intl
Sat 10/24
5:40 am-2:35 pm
1 stop8h 55m
$315
Quickest round-trip
BuffaloSan Juan
BUF Buffalo - SJU San Juan Luis Munoz Marin Intl
BUFSJU
Buffalo
Thu 9/3
4:35 pm-11:55 pm
1 stop7h 20m
San Juan Luis Munoz Marin Intl
Thu 9/10
3:20 pm-9:55 pm
1 stop6h 35m
$323
BuffaloSan Juan
BUF Buffalo - SJU San Juan Luis Munoz Marin Intl
BUFSJU
Buffalo
Sun 1/24
6:00 am-2:31 pm
1 stop7h 31m
San Juan Luis Munoz Marin Intl
Fri 2/5
3:55 pm-11:55 pm
1 stop9h 00m
$330
BuffaloSan Juan
BUF Buffalo - SJU San Juan Luis Munoz Marin Intl
BUFSJU
Buffalo
Wed 11/11
3:59 pm-11:55 pm
1 stop6h 56m
San Juan Luis Munoz Marin Intl
Sat 11/14
7:15 am-3:18 pm
1 stop9h 03m
$330
BuffaloSan Juan
BUF Buffalo - SJU San Juan Luis Munoz Marin Intl
BUFSJU
Buffalo
Mon 10/19
7:00 am-2:44 pm
1 stop7h 44m
San Juan Luis Munoz Marin Intl
Sat 10/24
7:00 am-11:12 pm
2 stops16h 12m
$330
Showing 1-10 of 23 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
What is the cheapest month to book a flight from Buffalo to San Juan?
Currently, March is the cheapest month in which you can book a flight from Buffalo to San Juan (average of $339). Flying from Buffalo to San Juan in December is currently the most expensive (average of $590). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from BUF to SJU?
Find hourly flight availability from Buffalo to San Juan. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 10, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Buffalo to San Juan as you normally would.
How much does it cost to fly round-trip from Buffalo to San Juan?
Airfare is below average for this route at the moment.
Buffalo to San Juan flights typically cost between $328 and $431 in November.The cheapest round-trip price found within the last 5 days was $292 on United Airlines (Nov 3-Nov 6).
How far ahead should I book a flight from Buffalo to San Juan?
To ensure you get the cheapest price possible for a flight from Buffalo to San Juan, you should look to book at least 87 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.
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 August 10, 2026.
Get a feel of what it's like to fly with Southwest,Delta, andAmerican 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.
Boarding
8.1
Crew
8.6
Overall
8.0
Comfort
8.0
Food
7.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Boarding
8.1
Crew
8.6
Overall
8.0
Comfort
8.0
Food
7.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Boarding
8.1
Crew
8.6
Overall
8.0
Comfort
8.0
Food
7.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Boarding
8.1
Crew
8.6
Overall
8.0
Comfort
8.0
Food
7.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Boarding
8.1
Crew
8.6
Overall
8.0
Comfort
8.0
Food
7.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Boarding
8.1
Crew
8.6
Overall
8.0
Comfort
8.0
Food
7.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
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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Buffalo and San Juan flights
Browse other Buffalo and San Juan flight options. Last updated on August 10, 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 August 10, 2026.
Popular flight searches
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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 August 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$106 | Average$302 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$125 | Average$303 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$211 | Average$517 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$211 | Average$474 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$225 | Average$417 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$231 | Average$464 | FlexibilityNo cancel fee | On-time71% |