$120+ 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 7/11. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SJU
Jun 5 — Jun 121
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 Wednesday or Monday and return on a Monday
Cheap flight deals from Buffalo to San Juan
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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 May 6, 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 May 6, 2026.
This Expedia deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/99:02 pm
BUF
- SJU
1 stop10h 55m
Frontier
Tue 7/148:00 am
SJU
- BUF
1 stop12h 16m
Frontier
Deal found 4/30![Frontier logo]()
$256
This Frontier deal was found by Cheapflights users on 5/3. 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 8/217:52 pm
BUF
- SJU
1 stop12h 17m
Frontier
Thu 8/278:00 am
SJU
- BUF
1 stop12h 12m
Frontier
Deal found 5/3![Frontier logo]()
$258
This SmartFares deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/89:19 am
BUF
- SJU
Nonstop3h 54m
JetBlue
Fri 5/157:00 pm
SJU
- BUF
Nonstop4h 48m
JetBlue
Deal found 5/1![JetBlue logo]()
$262
This Priceline deal was found by Cheapflights users on 4/30. 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 5/162:47 pm
BUF
- SJU
1 stop7h 56m
Multiple Airlines
Sat 5/236:20 pm
SJU
- BUF
Nonstop4h 49m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$269
This Cheapflightsfares deal was found by Cheapflights users on 4/30. 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 5/99:19 am
BUF
- SJU
Nonstop3h 54m
JetBlue
Fri 5/157:00 pm
SJU
- BUF
Nonstop4h 48m
JetBlue
Deal found 4/30![JetBlue logo]()
$270
This Priceline deal was found by Cheapflights users on 4/30. 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 6/87:16 am
BUF
- SJU
Nonstop3h 55m
Multiple Airlines
Mon 6/159:24 am
SJU
- BUF
1 stop9h 48m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$271
This JetBlue deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/189:19 am
BUF
- SJU
Nonstop3h 54m
JetBlue
Fri 5/226:20 pm
SJU
- BUF
Nonstop4h 49m
JetBlue
Deal found 4/30![JetBlue logo]()
$275
This Frontier deal was found by Cheapflights users on 5/5. 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.
Fri 8/217:52 pm
BUF
- SJU
1 stop12h 17m
Frontier
Mon 8/249:24 am
SJU
- BUF
1 stop9h 43m
Frontier
Deal found 5/5![Frontier logo]()
$276
This Booking.com deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/149:02 pm
BUF
- SJU
1 stop10h 53m
Frontier
Sun 6/219:24 am
SJU
- BUF
1 stop9h 48m
Frontier
Deal found 5/2![Frontier logo]()
$278
This JetBlue deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/87:16 am
BUF
- SJU
Nonstop3h 55m
JetBlue
Sat 6/136:20 pm
SJU
- BUF
Nonstop4h 38m
JetBlue
Deal found 5/2![JetBlue logo]()
$280
This Priceline deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/79:02 pm
BUF
- SJU
1 stop29h 09m
Frontier
Mon 7/136:31 pm
SJU
- BUF
1 stop24h 35m
Frontier
Deal found 5/2![Frontier logo]()
$284
This Priceline deal was found by Cheapflights users on 4/30. 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 5/162:47 pm
BUF
- SJU
1 stop7h 56m
Frontier
Sat 5/238:59 am
SJU
- BUF
1 stop10h 00m
Frontier
Deal found 4/30![Frontier logo]()
$289
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 May 6, 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 May 6, 2026.
This JetBlue deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/189:19 am
BUF
- SJU
Nonstop3h 54m
JetBlue
Fri 5/225:01 am
SJU
- BUF
1 stop7h 34m
JetBlue
Deal found 5/1![JetBlue logo]()
$327
This United Airlines deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/126:04 am
BUF
- SJU
1 stop6h 30m
United Airlines
Tue 5/197:40 am
SJU
- BUF
1 stop9h 14m
United Airlines
Deal found 5/2![United Airlines logo]()
$347
This Southwest deal was found by Cheapflights users on 4/30. 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 5/95:00 pm
BUF
- SJU
1 stop6h 15m
Southwest
Fri 5/154:25 pm
SJU
- BUF
1 stop6h 55m
Southwest
Deal found 4/30![Southwest logo]()
$358
This Delta deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/86:25 am
BUF
- SJU
1 stop6h 55m
Delta
Wed 5/131:14 pm
SJU
- BUF
1 stop10h 45m
Delta
Deal found 5/3![Delta logo]()
$398
This Southwest deal was found by Cheapflights users on 5/4. 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.
Tue 7/289:00 am
BUF
- SJU
2 stops15h 45m
Southwest
Wed 8/121:20 pm
SJU
- BUF
1 stop8h 25m
Southwest
Deal found 5/4![Southwest logo]()
$378
This JetBlue deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/307:45 am
BUF
- SJU
1 stop8h 35m
JetBlue
Tue 6/23:30 am
SJU
- BUF
1 stop10h 12m
JetBlue
Deal found 5/3![JetBlue logo]()
$387
This United Airlines deal was found by Cheapflights users on 4/30. 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 5/910:45 am
BUF
- SJU
2 stops10h 39m
United Airlines
Fri 5/157:40 am
SJU
- BUF
1 stop9h 14m
United Airlines
Deal found 4/30![United Airlines logo]()
$392
This Delta deal was found by Cheapflights users on 5/3. 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 5/303:53 pm
BUF
- SJU
1 stop7h 42m
Delta
Thu 6/181:10 pm
SJU
- BUF
1 stop11h 28m
Delta
Deal found 5/3![Delta logo]()
$419
This Southwest deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/105:30 pm
BUF
- SJU
1 stop6h 15m
Southwest
Sun 5/175:00 am
SJU
- BUF
1 stop6h 50m
Southwest
Deal found 5/1![Southwest logo]()
$418
Last-minute flights from Buffalo to San JuanDiscover last-minute flight deals from Buffalo to San Juan. Data last updated May 6, 2026 and is based on user searches.
Discover last-minute flight deals from Buffalo to San Juan. Data last updated May 6, 2026 and is based on user searches.
This SmartFares deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/89:19 am
BUF
- SJU
Nonstop3h 54m
JetBlue
Fri 5/157:00 pm
SJU
- BUF
Nonstop4h 48m
JetBlue
Deal found 5/1![JetBlue logo]()
$262
This Cheapflightsfares deal was found by Cheapflights users on 4/30. 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 5/99:19 am
BUF
- SJU
Nonstop3h 54m
JetBlue
Fri 5/157:00 pm
SJU
- BUF
Nonstop4h 48m
JetBlue
Deal found 4/30![JetBlue logo]()
$270
This Priceline deal was found by Cheapflights users on 4/30. 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 5/162:47 pm
BUF
- SJU
1 stop7h 56m
Multiple Airlines
Sat 5/236:20 pm
SJU
- BUF
Nonstop4h 49m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$269
This Priceline deal was found by Cheapflights users on 4/30. 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 5/162:47 pm
BUF
- SJU
1 stop7h 56m
Frontier
Sat 5/238:59 am
SJU
- BUF
1 stop10h 00m
Frontier
Deal found 4/30![Frontier logo]()
$289
This JetBlue deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/189:19 am
BUF
- SJU
Nonstop3h 54m
JetBlue
Fri 5/226:20 pm
SJU
- BUF
Nonstop4h 49m
JetBlue
Deal found 4/30![JetBlue logo]()
$275
This JetBlue deal was found by Cheapflights users on 5/4. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/297:16 am
BUF
- SJU
Nonstop3h 55m
JetBlue
Fri 5/296:20 pm
SJU
- BUF
Nonstop4h 49m
JetBlue
Deal found 5/4![JetBlue logo]()
$290
This JetBlue deal was found by Cheapflights users on 5/4. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/297:16 am
BUF
- SJU
Nonstop3h 55m
JetBlue
Sat 5/305:34 pm
SJU
- BUF
Nonstop4h 49m
JetBlue
Deal found 5/4![JetBlue logo]()
$295
This eDestinos deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/52:49 pm
BUF
- SJU
2 stops29h 51m
Frontier
Mon 6/86:30 am
SJU
- BUF
2 stops28h 40m
Frontier
Deal found 5/1![Frontier logo]()
$294
This Priceline deal was found by Cheapflights users on 4/30. 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 6/87:16 am
BUF
- SJU
Nonstop3h 55m
Multiple Airlines
Mon 6/159:24 am
SJU
- BUF
1 stop9h 48m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$271
This JetBlue deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/87:16 am
BUF
- SJU
Nonstop3h 55m
JetBlue
Sat 6/136:20 pm
SJU
- BUF
Nonstop4h 38m
JetBlue
Deal found 5/2![JetBlue logo]()
$280
This Priceline deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/107:57 pm
BUF
- SJU
1 stop27h 32m
Frontier
Sun 6/148:00 am
SJU
- BUF
1 stop12h 17m
Frontier
Deal found 5/1![Frontier logo]()
$276
This Booking.com deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/149:02 pm
BUF
- SJU
1 stop10h 53m
Frontier
Sun 6/219:24 am
SJU
- BUF
1 stop9h 48m
Frontier
Deal found 5/2![Frontier logo]()
$278
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 May 6, 2026.
Search for one-way flight options from Buffalo to San Juan. Find affordable one-way fares based on user searches. Data last updated May 6, 2026.
This CheapOair deal was found by Cheapflights users on 5/3. 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.
Sat 7/1110:05 pm
BUF
- SJU
1 stop9h 52m
Frontier
Deal found 5/3![Frontier logo]()
$120
This SmartFares deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/37:16 am
BUF
- SJU
Nonstop3h 55m
JetBlue
Deal found 5/1![JetBlue logo]()
$121
This Super.com deal was found by Cheapflights users on 4/30. 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 5/87:41 pm
BUF
- SJU
1 stop6h 27m
Frontier
Deal found 4/30![Frontier logo]()
$126
This Expedia deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/92:47 pm
BUF
- SJU
1 stop11h 21m
Frontier
Deal found 5/1![Frontier logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 4/30. 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 6/1611:50 am
BUF
- SJU
2 stops26h 39m
Frontier
Deal found 4/30![Frontier logo]()
$128
This Super.com deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/189:19 am
BUF
- SJU
Nonstop3h 54m
JetBlue
Deal found 5/2![JetBlue logo]()
$131
This Cheapflightsfares deal was found by Cheapflights users on 5/5. 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.
Mon 5/257:16 am
BUF
- SJU
Nonstop3h 55m
JetBlue
Deal found 5/5![JetBlue logo]()
$132
This JetBlue deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/307:16 am
BUF
- SJU
Nonstop3h 55m
JetBlue
Deal found 5/1![JetBlue logo]()
$133
This Frontier deal was found by Cheapflights users on 5/5. 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.
Thu 7/239:02 pm
BUF
- SJU
1 stop10h 55m
Frontier
Deal found 5/5![Frontier logo]()
$138
This Trip.com deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/32:49 pm
BUF
- SJU
2 stops13h 12m
Frontier
Deal found 5/1![Frontier logo]()
$139
This Frontier deal was found by Cheapflights users on 5/4. 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 7/410:05 pm
BUF
- SJU
1 stop9h 52m
Frontier
Deal found 5/4![Frontier logo]()
$140
This Priceline deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/149:02 pm
BUF
- SJU
1 stop20h 34m
Frontier
Deal found 5/1![Frontier logo]()
$144
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 May 6, 2026.
Round-trip from | $256 (Expedia) |
|---|---|
One-way from | $120 (CheapOair) |
Popular in | December |
Cheapest in | September |
Average price | $320 |
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 May 6, 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
Quickest round-trip
BuffaloSan Juan
BUF - SJU
BUFSJU
Buffalo
Mon 5/18
9:19 am-1:13 pm
Nonstop3h 54m
San Juan Luis Munoz Marin Intl
Fri 5/22
5:01 am-12:35 pm
1 stop7h 34m
$327
BuffaloSan Juan
BUF - SJU
BUFSJU
Buffalo
Tue 5/12
6:04 am-12:34 pm
1 stop6h 30m
San Juan Luis Munoz Marin Intl
Tue 5/19
7:40 am-4:54 pm
1 stop9h 14m
$347
BuffaloSan Juan
BUF - SJU
BUFSJU
Buffalo
Sat 5/9
5:00 pm-11:15 pm
1 stop6h 15m
San Juan Luis Munoz Marin Intl
Fri 5/15
4:25 pm-11:20 pm
1 stop6h 55m
$358
BuffaloSan Juan
BUF - SJU
BUFSJU
Buffalo
Tue 7/28
9:00 am-12:45 am
2 stops15h 45m
San Juan Luis Munoz Marin Intl
Wed 8/12
1:20 pm-9:45 pm
1 stop8h 25m
$378
BuffaloSan Juan
BUF - SJU
BUFSJU
Buffalo
Sat 5/30
7:45 am-4:20 pm
1 stop8h 35m
San Juan Luis Munoz Marin Intl
Tue 6/2
3:30 am-1:42 pm
1 stop10h 12m
$387
BuffaloSan Juan
BUF - SJU
BUFSJU
Buffalo
Sat 5/9
10:45 am-9:24 pm
2 stops10h 39m
San Juan Luis Munoz Marin Intl
Fri 5/15
7:40 am-4:54 pm
1 stop9h 14m
$392
BuffaloSan Juan
BUF - SJU
BUFSJU
Buffalo
Fri 5/8
6:25 am-1:20 pm
1 stop6h 55m
San Juan Luis Munoz Marin Intl
Wed 5/13
1:14 pm-11:59 pm
1 stop10h 45m
$398
BuffaloSan Juan
BUF - SJU
BUFSJU
Buffalo
Sun 5/10
5:30 pm-11:45 pm
1 stop6h 15m
San Juan Luis Munoz Marin Intl
Sun 5/17
5:00 am-11:50 am
1 stop6h 50m
$418
BuffaloSan Juan
BUF - SJU
BUFSJU
Buffalo
Sat 5/30
3:53 pm-11:35 pm
1 stop7h 42m
San Juan Luis Munoz Marin Intl
Thu 6/18
1:10 pm-12:38 am
1 stop11h 28m
$419
Cheapest one-way
BuffaloSan Juan
BUF - SJU
BUFSJU
Buffalo
Fri 5/29
7:16 am-11:11 am
Nonstop3h 55m
$133
Showing 1-10 of 17 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?
To ensure you get the cheapest price possible for a flight from Buffalo to San Juan, you should look to book at least 86 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, April is the cheapest month in which you can book a flight from Buffalo to San Juan (average of $93). Flying from Buffalo to San Juan in July is currently the most expensive (average of $200). 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 May 6, 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?
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 May 6, 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.
Comfort
8.0
Food
7.0
Overall
7.9
Crew
8.6
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Food
7.0
Overall
7.9
Crew
8.6
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Food
7.0
Overall
7.9
Crew
8.6
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Food
7.0
Overall
7.9
Crew
8.6
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Food
7.0
Overall
7.9
Crew
8.6
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Food
7.0
Overall
7.9
Crew
8.6
Entertainment
7.5
Boarding
8.1
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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Alternative routes for Buffalo to San Juan
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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 May 6, 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 May 6, 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 May 6, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$112 | Average$264 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$125 | Average$255 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$203 | Average$524 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$211 | Average$504 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$225 | Average$412 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$231 | Average$436 | FlexibilityNo cancel fee | On-time71% |