$90+ Cheap flights from San Juan to Buffalo (BUF)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/14. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — BUF
Jan 17 — Jan 241
1 adult, Economy
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Find cheap flights from San Juan to Buffalo 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 San Juan to Buffalo are usually found in September or February, booked 71 days in advance, depart on a Thursday or Tuesday and return on a Tuesday
Cheap flight deals from San Juan to Buffalo
Cheapest flights from San Juan to BuffaloExplore the most affordable flight options available from San Juan to Buffalo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.
Explore the most affordable flight options available from San Juan to Buffalo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.
This Expedia deal was found by Cheapflights users on 12/16. 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.
Wed 12/243:55 amSJU - BUF
1 stop10h 17mFrontier
Thu 1/12:07 pmBUF - SJU
1 stop11h 43mFrontier
Deal found 12/16![Frontier logo]()
$245
This Expedia deal was found by Cheapflights users on 12/16. 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.
Mon 12/295:22 pmSJU - BUF
1 stop25h 15mFrontier
Mon 1/510:43 amBUF - SJU
1 stop15h 07mFrontier
Deal found 12/16![Frontier logo]()
$252
This Expedia deal was found by Cheapflights users on 12/16. 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.
Tue 12/309:37 pmSJU - BUF
1 stop24h 03mFrontier
Mon 1/510:43 amBUF - SJU
1 stop15h 07mFrontier
Deal found 12/16![Frontier logo]()
$254
This JetBlue deal was found by Cheapflights users on 12/15. 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 12/305:24 pmSJU - BUF
1 stop7h 30mJetBlue
Tue 1/610:25 amBUF - SJU
1 stop6h 40mJetBlue
Deal found 12/15![JetBlue logo]()
$277
This Frontier deal was found by Cheapflights users on 12/17. 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.
Tue 12/3010:08 amSJU - BUF
1 stop8h 29mFrontier
Thu 1/12:07 pmBUF - SJU
1 stop11h 43mFrontier
Deal found 12/17![Frontier logo]()
$286
This Expedia deal was found by Cheapflights users on 12/16. 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.
Wed 12/316:00 amSJU - BUF
1 stop15h 40mFrontier
Mon 1/510:43 amBUF - SJU
1 stop15h 07mFrontier
Deal found 12/16![Frontier logo]()
$288
This Frontier deal was found by Cheapflights users on 12/15. 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 12/2010:07 amSJU - BUF
1 stop11h 43mFrontier
Sat 1/38:14 pmBUF - SJU
1 stop11h 44mFrontier
Deal found 12/15![Frontier logo]()
$290
This CheapOair deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:00 amSJU - BUF
1 stop15h 40mFrontier
Sun 1/46:32 pmBUF - SJU
1 stop27h 43mFrontier
Deal found 12/16![Frontier logo]()
$303
This CheapOair deal was found by Cheapflights users on 12/15. 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.
Tue 12/305:24 pmSJU - BUF
1 stop7h 30mJetBlue
Wed 1/710:00 amBUF - SJU
1 stop14h 22mJetBlue
Deal found 12/15![JetBlue logo]()
$310
This Priceline deal was found by Cheapflights users on 12/15. 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 12/309:37 pmSJU - BUF
1 stop24h 03mMultiple Airlines
Tue 1/67:00 amBUF - SJU
1 stop7h 53mMultiple Airlines
Deal found 12/15![Multiple Airlines logo]()
$319
Find flight deals from San Juan to Buffalo
Discover tips and strategies to find the most affordable flight options for your journey from San Juan (PR1) to Buffalo (BUF). 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 December 18, 2025.
Round-trip from | $223 (Expedia) |
|---|---|
One-way from | $90 (Frontier) |
Popular in | December |
Cheapest in | September |
Average price | $454 |
Cheapflights Fare Finder
Customize your flight search to find flights from San Juan to Buffalo 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 December 18, 2025.
Use the filters below to find and compare flights from San Juan to Buffalo that are best for you.
Fly from
San Juan
Fly to
Buffalo
Route
Depart
Return
Price
San JuanBuffalo
SJU - BUF
SJUBUF
San Juan Luis Munoz Marin Intl
Fri 1/9
9:23 pm-5:38 pm
1 stop21h 15m
Buffalo
Mon 1/12
9:08 am-5:09 pm
1 stop7h 01m
$224
San JuanBuffalo
SJU - BUF
SJUBUF
San Juan Luis Munoz Marin Intl
Fri 2/27
6:30 am-11:55 am
1 stop6h 25m
Buffalo
Tue 3/3
1:20 pm-12:35 am
2 stops10h 15m
$225
San JuanBuffalo
SJU - BUF
SJUBUF
San Juan Luis Munoz Marin Intl
Fri 1/30
7:00 am-3:34 pm
1 stop9h 34m
Buffalo
Sun 2/1
6:05 am-6:22 pm
2 stops11h 17m
$231
San JuanBuffalo
SJU - BUF
SJUBUF
San Juan Luis Munoz Marin Intl
Wed 2/4
6:00 am-4:57 pm
2 stops11h 57m
Buffalo
Sun 2/8
7:00 am-8:50 pm
1 stop12h 50m
$235
San JuanBuffalo
SJU - BUF
SJUBUF
San Juan Luis Munoz Marin Intl
Fri 1/30
6:00 am-3:34 pm
2 stops10h 34m
Buffalo
Tue 2/3
5:12 am-5:01 pm
2 stops10h 49m
$236
San JuanBuffalo
SJU - BUF
SJUBUF
San Juan Luis Munoz Marin Intl
Wed 1/28
1:24 pm-10:55 pm
2 stops10h 31m
Buffalo
Sun 2/1
12:58 pm-8:50 pm
1 stop6h 52m
$236
San JuanBuffalo
SJU - BUF
SJUBUF
San Juan Luis Munoz Marin Intl
Wed 2/25
11:59 pm-9:28 am
1 stop10h 29m
Buffalo
Sun 3/1
3:05 pm-11:49 pm
1 stop7h 44m
$261
San JuanBuffalo
SJU - BUF
SJUBUF
San Juan Luis Munoz Marin Intl
Wed 2/18
4:06 pm-12:54 pm
1 stop21h 48m
Buffalo
Sun 2/22
6:07 pm-3:07 pm
2 stops20h 00m
$268
San JuanBuffalo
SJU - BUF
SJUBUF
San Juan Luis Munoz Marin Intl
Sat 1/31
7:00 am-3:34 pm
1 stop9h 34m
Buffalo
Wed 2/4
12:58 pm-8:50 pm
1 stop6h 52m
$275
San JuanBuffalo
SJU - BUF
SJUBUF
San Juan Luis Munoz Marin Intl
Sat 2/28
5:25 pm-7:51 am
1 stop15h 26m
$91
Showing 1-10 of 19 results
Best time to book a flight from San Juan to Buffalo
Have a flexible travel schedule? Discover the best time to fly to Buffalo from San Juan with our price prediction graph.
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 San Juan to Buffalo
How far ahead should I book a flight from San Juan to Buffalo?
Use this chart to determine the optimal time to book a round-trip flight from San Juan to Buffalo. Price data was last updated on December 12, 2025.
Booking 71 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Juan to Buffalo. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from San Juan to Buffalo?
Currently, September is the cheapest month in which you can book a flight from San Juan to Buffalo (average of $118). Flying from San Juan to Buffalo in October is currently the most expensive (average of $225). 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 SJU to BUF?
Find hourly flight availability from San Juan to Buffalo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.
When flying from San Juan to Buffalo, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 53% versus a flight in the morning.
What is the cheapest day to fly from San Juan to Buffalo?
Use this chart to determine the cheapest time to fly round-trip from San Juan to Buffalo. Price data was last updated on December 16, 2024.
Travelers seeking maximum savings on their San Juan to Buffalo flight should consider departing on Saturday at noon when fares are most often at their lowest. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Buffalo
Get insights into the airlines that provide service to Buffalo. 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 Buffalo. Reviews last updated December 18, 2025.
Read through reviews of airlines operating flights from San Juan to Buffalo, such as Southwest, Delta, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.5
Food
7.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Overall
7.9
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Food
7.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Overall
7.9
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Food
7.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Overall
7.9
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Food
7.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Overall
7.9
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Food
7.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Overall
7.9
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Food
7.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Overall
7.9
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Related info for your journey
Find useful and relevant information for your journey from San Juan to Buffalo. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Buffalo?
Book flights to Buffalo if you plan to visit one of these locationsLockport
Cheektowaga
Batavia
Williamsville
Orchard Park
Eden
Amherst
West Seneca
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Alternative routes for San Juan to Buffalo
See prices for flight routes from nearby airports that may be better suited for you.
Top 5 airlines flying from San Juan to Buffalo
Discover the top 5 airlines that operate flights from San Juan to Buffalo. 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 December 18, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$102 | Average$306 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$124 | Average$213 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$211 | Average$470 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$215 | Average$390 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$264 | Average$431 | FlexibilityNo cancel fee | On-time62% |