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

WNSouthwest Airlines

Round Trip•Economy

BUF

Buffalo Niagara International Airport

Buffalo, United States

SJU

Luis Muñoz Marín International Airport

San Juan, Puerto Rico

$426 USD

-54%$195 USD

Verified Nov 29, 2025 at 7:24 AM

January 2026

Today

Mon

Tue

Wed

Thu

Fri

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Sun

29$636 30$525 31$247 1$335 2$350 3$350 4$350 5$370 6$305 7$305 8$305 9$316 10$335 11$217 12$203 13$217 14$286 15$335 16$316 17$247 18$217 19$203 20$203 21$195 22$217 23$217 24$217 25$217 26$195 27$195 28$217 29$217 30$305 31$217 1

Extremely Rare Availability

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

Sunday, January 4th, 2026

10 round-trip options

Returning

Fri, Jan 9, 2026•5 Day Trip

$505 USD

Google Flights

Returning

Sat, Jan 10, 2026•6 Day Trip

$490 USD

Google Flights

Returning

Sun, Jan 11, 2026•7 Day Trip

$460 USD

Google Flights

Returning

Mon, Jan 12, 2026•8 Day Trip

$423 USD

Google Flights

Returning

Tue, Jan 13, 2026•9 Day Trip

$350 USD

Google Flights

Returning

Wed, Jan 14, 2026•10 Day Trip

$372 USD

Google Flights

Returning

Thu, Jan 15, 2026•11 Day Trip

$358 USD

Google Flights

Returning

Fri, Jan 16, 2026•12 Day Trip

$372 USD

Google Flights

Returning

Sat, Jan 17, 2026•13 Day Trip

$423 USD

Google Flights

Returning

Sun, Jan 18, 2026•14 Day Trip

$545 USD

Google Flights