San Juan (SJU) to Buffalo (BUF) flight deal from $195 USD in economy class

UAUnited Airlines

Round Trip•Economy

SJU

Luis Muñoz Marín International Airport

San Juan, Puerto Rico

BUF

Buffalo Niagara International Airport

Buffalo, United States

$518 USD

-62%$195 USD

Verified Nov 29, 2025 at 7:23 AM

December 2025

Today

Mon

Tue

Wed

Thu

Fri

Sat

Sun

1$653 2$383 3$383 4$383 5$428 6$522 7$443 8$419 9$332 10$332 11$389 12$472 13$506 14$598 15$601 16$469 17$340 18$427 19$469 20$427 21$461 22$463 23$405 24$325 25$331 26$450 27$530 28$554 29$518 30$432 31$410 1$513 2$745 3$788 4$718

Extremely Rare Availability

2% of dates checked are available within 10% of the lowest price

Friday, December 19th, 2025

10 round-trip options

Returning

Wed, Dec 24, 2025•5 Day Trip

$657 USD

Google Flights

Returning

Thu, Dec 25, 2025•6 Day Trip

$685 USD

Google Flights

Returning

Fri, Dec 26, 2025•7 Day Trip

$849 USD

Google Flights

Returning

Sat, Dec 27, 2025•8 Day Trip

$1,030 USD

Google Flights

Returning

Sun, Dec 28, 2025•9 Day Trip

$842 USD

Google Flights

Returning

Mon, Dec 29, 2025•10 Day Trip

$873 USD

Google Flights

Returning

Tue, Dec 30, 2025•11 Day Trip

$749 USD

Google Flights

Returning

Wed, Dec 31, 2025•12 Day Trip

$469 USD

Google Flights

Returning

Thu, Jan 1, 2026•13 Day Trip

$495 USD

Google Flights

Returning

Fri, Jan 2, 2026•14 Day Trip

$560 USD

Google Flights