$95+ Cheap flights from Buffalo (BUF) to San Juan
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SJU
Dec 7 — Dec 141
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 October or August, booked 88 days in advance, depart on a Friday or Wednesday 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 November 7, 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 November 7, 2026.
This United Airlines deal was found by Cheapflights users on 11/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/86:30 am -
2 stops13h 54m
Tue 12/158:05 am -
1 stop7h 15m
Deal found 11/3![United Airlines logo]()
$236
This Kiwi.com deal was found by Cheapflights users on 11/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/128:02 pm -
1 stop13h 13m
Thu 11/1911:20 am -
1 stop7h 32m
Deal found 11/4![Frontier logo]()
$237
This Cheapflightsfares deal was found by Cheapflights users on 11/7. 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.
Sun 11/812:39 pm -
1 stop20h 36m
Wed 11/117:25 pm -
1 stop22h 22m
Deal found 11/7![Frontier logo]()
$238
This Kiwi.com deal was found by Cheapflights users on 11/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/21:15 pm -
1 stop10h 52m
Thu 12/108:44 pm -
1 stop17h 51m
Deal found 11/3![Frontier logo]()
$240
This Cheapflightsfares deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1912:54 pm -
1 stop12h 52m
Sun 11/2210:21 pm -
1 stop23h 03m
Deal found 11/2![Frontier logo]()
$241
This JetBlue deal was found by Cheapflights users on 11/3. 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.
Tue 11/178:58 am -
1 stop8h 39m
Sat 11/212:30 pm -
Nonstop4h 41m
Deal found 11/3![JetBlue logo]()
$242
This JetBlue deal was found by Cheapflights users on 11/4. 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 12/49:05 am -
Nonstop4h 53m
Sat 12/125:01 am -
1 stop8h 46m
Deal found 11/4![JetBlue logo]()
$243
This Travelocity deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/182:00 pm -
1 stop9h 59m
Mon 11/232:30 pm -
Nonstop4h 41m
Deal found 11/2![Multiple Airlines logo]()
$247
This Priceline deal was found by Cheapflights users on 11/7. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/229:20 pm -
1 stop28h 04m
Thu 11/2610:21 pm -
1 stop23h 03m
Deal found 11/7![Frontier logo]()
$250
This Super.com deal was found by Cheapflights users on 11/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/96:00 am -
1 stop7h 54m
Tue 12/155:01 am -
1 stop8h 46m
Deal found 11/7![JetBlue logo]()
$251
This JetBlue deal was found by Cheapflights users on 11/6. 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.
Sat 12/59:05 am -
Nonstop4h 53m
Wed 12/165:01 am -
1 stop8h 46m
Deal found 11/6![JetBlue logo]()
$252
This Cheapflightsfares deal was found by Cheapflights users on 11/5. 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.
Wed 11/182:00 pm -
1 stop9h 59m
Mon 11/235:19 am -
1 stop8h 40m
Deal found 11/5![Frontier logo]()
$253
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 November 7, 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 November 7, 2026.
This United Airlines deal was found by Cheapflights users on 11/2. 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.
Wed 12/97:12 am -
1 stop6h 28m
Wed 12/168:05 am -
2 stops11h 05m
Deal found 11/2![United Airlines logo]()
$236
This JetBlue deal was found by Cheapflights users on 11/4. 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 12/49:05 am -
Nonstop4h 53m
Sat 12/125:01 am -
1 stop8h 46m
Deal found 11/4![JetBlue logo]()
$243
This Southwest deal was found by Cheapflights users on 11/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/112:45 pm -
2 stops8h 40m
Tue 12/86:10 am -
1 stop8h 50m
Deal found 11/3![Southwest logo]()
$322
This United Airlines deal was found by Cheapflights users on 11/4. 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.
Thu 11/1210:51 am -
2 stops10h 31m
Thu 11/195:50 pm -
1 stop6h 54m
Deal found 11/4![United Airlines logo]()
$272
This JetBlue deal was found by Cheapflights users on 11/6. 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.
Sat 12/59:05 am -
Nonstop4h 53m
Sat 12/196:05 pm -
Nonstop4h 42m
Deal found 11/6![JetBlue logo]()
$275
This JetBlue deal was found by Cheapflights users on 11/6. 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.
Mon 11/307:45 am -
Nonstop4h 50m
Wed 12/165:01 am -
1 stop8h 46m
Deal found 11/6![JetBlue logo]()
$287
This Southwest deal was found by Cheapflights users on 11/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/302:20 pm -
1 stop7h 55m
Sun 2/75:35 am -
2 stops10h 10m
Deal found 11/3![Southwest logo]()
$367
This JetBlue deal was found by Cheapflights users on 11/6. 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 12/49:05 am -
Nonstop4h 53m
Thu 12/105:01 am -
1 stop8h 46m
Deal found 11/6![JetBlue logo]()
$317
This United Airlines deal was found by Cheapflights users on 11/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/76:00 am -
1 stop6h 32m
Fri 12/112:05 am -
2 stops15h 52m
Deal found 11/6![United Airlines logo]()
$356
This JetBlue deal was found by Cheapflights users on 11/6. 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 1/291:31 pm -
1 stop7h 07m
Sat 2/1311:45 am -
1 stop8h 08m
Deal found 11/6![JetBlue logo]()
$320
This United Airlines deal was found by Cheapflights users on 11/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/510:30 am -
2 stops13h 06m
Tue 12/152:52 pm -
1 stop9h 42m
Deal found 11/6![United Airlines logo]()
$356
This JetBlue deal was found by Cheapflights users on 11/6. 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.
Wed 12/29:05 am -
Nonstop4h 53m
Fri 12/186:05 pm -
Nonstop4h 42m
Deal found 11/6![JetBlue logo]()
$340
Last-minute flights from Buffalo to San JuanDiscover last-minute flight deals from Buffalo to San Juan. Data last updated November 7, 2026 and is based on user searches.
Discover last-minute flight deals from Buffalo to San Juan. Data last updated November 7, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 11/7. 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.
Sun 11/812:39 pm -
1 stop20h 36m
Wed 11/117:25 pm -
1 stop22h 22m
Deal found 11/7![Frontier logo]()
$238
This Kiwi.com deal was found by Cheapflights users on 11/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/128:02 pm -
1 stop13h 13m
Thu 11/1911:20 am -
1 stop7h 32m
Deal found 11/4![Frontier logo]()
$237
This JetBlue deal was found by Cheapflights users on 11/3. 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.
Tue 11/178:58 am -
1 stop8h 39m
Sat 11/212:30 pm -
Nonstop4h 41m
Deal found 11/3![JetBlue logo]()
$242
This Travelocity deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/182:00 pm -
1 stop9h 59m
Mon 11/232:30 pm -
Nonstop4h 41m
Deal found 11/2![Multiple Airlines logo]()
$247
This Cheapflightsfares deal was found by Cheapflights users on 11/5. 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.
Wed 11/182:00 pm -
1 stop9h 59m
Mon 11/235:19 am -
1 stop8h 40m
Deal found 11/5![Frontier logo]()
$253
This Cheapflightsfares deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1912:54 pm -
1 stop12h 52m
Sun 11/2210:21 pm -
1 stop23h 03m
Deal found 11/2![Frontier logo]()
$241
This Priceline deal was found by Cheapflights users on 11/7. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/229:20 pm -
1 stop28h 04m
Thu 11/2610:21 pm -
1 stop23h 03m
Deal found 11/7![Frontier logo]()
$250
This Kiwi.com deal was found by Cheapflights users on 11/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/21:15 pm -
1 stop10h 52m
Thu 12/108:44 pm -
1 stop17h 51m
Deal found 11/3![Frontier logo]()
$240
This JetBlue deal was found by Cheapflights users on 11/4. 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 12/49:05 am -
Nonstop4h 53m
Sat 12/125:01 am -
1 stop8h 46m
Deal found 11/4![JetBlue logo]()
$243
This JetBlue deal was found by Cheapflights users on 11/6. 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.
Sat 12/59:05 am -
Nonstop4h 53m
Wed 12/165:01 am -
1 stop8h 46m
Deal found 11/6![JetBlue logo]()
$252
This United Airlines deal was found by Cheapflights users on 11/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/86:30 am -
2 stops13h 54m
Tue 12/158:05 am -
1 stop7h 15m
Deal found 11/3![United Airlines logo]()
$236
This Super.com deal was found by Cheapflights users on 11/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/96:00 am -
1 stop7h 54m
Tue 12/155:01 am -
1 stop8h 46m
Deal found 11/7![JetBlue logo]()
$251
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 November 7, 2026.
Search for one-way flight options from Buffalo to San Juan. Find affordable one-way fares based on user searches. Data last updated November 7, 2026.
This Kiwi.com deal was found by Cheapflights users on 11/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/91:15 pm -
1 stop10h 52m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Frontier logo]()
$95
This Kiwi.com deal was found by Cheapflights users on 11/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/211:03 pm -
1 stop12h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Frontier logo]()
$96
This Kiwi.com deal was found by Cheapflights users on 11/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/161:48 pm -
1 stop10h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Frontier logo]()
$97
This Frontier deal was found by Cheapflights users on 11/5. 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 12/41:15 pm -
1 stop10h 52m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/5![Frontier logo]()
$99
This Cheapflightsfares deal was found by Cheapflights users on 11/3. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/229:20 pm -
1 stop24h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![Frontier logo]()
$103
This Super.com deal was found by Cheapflights users on 11/2. 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.
Tue 11/178:58 am -
1 stop8h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![JetBlue logo]()
$105
This Kiwi.com deal was found by Cheapflights users on 11/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/131:48 pm -
1 stop10h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/5![Frontier logo]()
$107
This Kiwi.com deal was found by Cheapflights users on 11/7. 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.
Wed 11/182:00 pm -
1 stop9h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/7![Frontier logo]()
$111
This JetBlue deal was found by Cheapflights users on 11/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/81:39 pm -
1 stop6h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/7![JetBlue logo]()
$114
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 November 7, 2026.
Round-trip from | $236 (United Airlines) |
|---|---|
One-way from | $95 (Kiwi.com) |
Popular in | December |
Cheapest in | October |
Average price | $362 |
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 7,457,451 searches. Data last updated November 7, 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
Sun 1/24
3:53 pm-12:58 am
1 stop8h 05m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$118
BuffaloSan Juan
BUF Buffalo - SJU San Juan Luis Munoz Marin Intl
BUFSJU
Buffalo
Tue 12/15
5:10 pm-12:50 am
1 stop6h 40m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$118
BuffaloSan Juan
BUF Buffalo - SJU San Juan Luis Munoz Marin Intl
BUFSJU
Buffalo
Tue 12/15
10:25 am-6:24 pm
1 stop6h 59m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$126
BuffaloSan Juan
BUF Buffalo - SJU San Juan Luis Munoz Marin Intl
BUFSJU
Buffalo
Wed 1/6
10:15 am-12:36 am
2 stops13h 21m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$128
BuffaloSan Juan
BUF Buffalo - SJU San Juan Luis Munoz Marin Intl
BUFSJU
Buffalo
Fri 1/22
3:53 pm-12:58 am
1 stop8h 05m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$128
BuffaloSan Juan
BUF Buffalo - SJU San Juan Luis Munoz Marin Intl
BUFSJU
Buffalo
Sat 12/5
12:50 pm-9:15 pm
1 stop7h 25m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$128
BuffaloSan Juan
BUF Buffalo - SJU San Juan Luis Munoz Marin Intl
BUFSJU
Buffalo
Wed 1/20
4:59 pm-1:54 am
1 stop7h 55m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$132
BuffaloSan Juan
BUF Buffalo - SJU San Juan Luis Munoz Marin Intl
BUFSJU
Buffalo
Tue 11/10
10:30 am-9:00 pm
1 stop9h 30m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$134
Quickest round-trip
BuffaloSan Juan
BUF Buffalo - SJU San Juan Luis Munoz Marin Intl
BUFSJU
Buffalo
Tue 11/10
5:55 am-1:30 pm
1 stop6h 35m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$139
BuffaloSan Juan
BUF Buffalo - SJU San Juan Luis Munoz Marin Intl
BUFSJU
Buffalo
Wed 12/9
7:12 am-2:40 pm
1 stop6h 28m
San Juan Luis Munoz Marin Intl
Wed 12/16
8:05 am-6:10 pm
2 stops11h 05m
$236
Showing 1-10 of 21 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, October is the cheapest month in which you can book a flight from Buffalo to San Juan (average of $293). Flying from Buffalo to San Juan in December is currently the most expensive (average of $576). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Buffalo to San Juan?
Airfare is below average for this route at the moment.
Buffalo to San Juan flights typically cost between $288 and $491 in December.The cheapest round-trip price found within the last 5 days was $236 on United Airlines (Dec 8-Dec 15).
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 November 7, 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.
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentPatricia,Oct 2026
DAL - TPA
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentPatricia,Oct 2026
DAL - TPA
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentPatricia,Oct 2026
DAL - TPA
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentPatricia,Oct 2026
DAL - TPA
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentPatricia,Oct 2026
DAL - TPA
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentPatricia,Oct 2026
DAL - TPA
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 November 7, 2026.
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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 7,457,451 searches. Data last updated November 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$106 | Average$320 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$153 | Average$288 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$202 | Average$532 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$231 | Average$417 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$236 | Average$339 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$236 | Average$418 | FlexibilityNo cancel fee | On-time63% |