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

UAUnited Airlines

Round Trip•Economy

BUF

Buffalo Niagara International Airport

Buffalo, United States

SJU

Luis Muñoz Marín International Airport

San Juan, Puerto Rico

$524 USD

-63%$195 USD

Verified Nov 29, 2025 at 7:23 AM

December 2025

Today

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Tue

Wed

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Sun

1$331 2$279 3$297 4$324 5$324 6$324 7$352 8$719 9$302 10$299 11$325 12$381 13$334 14$391 15$334 16$391 17$474 18$570 19$555 20$544 21$604 22$731 23$802 24$726 25$754 26$918 27$1,127 28$934 29$893 30$707 31$390 1$366 2$431 3$347 4$334

Extremely Rare Availability

1% of dates checked are available within 10% of the lowest price

Tuesday, December 23rd, 2025

10 round-trip options

Returning

Sun, Dec 28, 2025•5 Day Trip

$843 USD

Google Flights

Returning

Mon, Dec 29, 2025•6 Day Trip

$812 USD

Google Flights

Returning

Tue, Dec 30, 2025•7 Day Trip

$824 USD

Google Flights

Returning

Wed, Dec 31, 2025•8 Day Trip

$802 USD

Google Flights

Returning

Thu, Jan 1, 2026•9 Day Trip

$905 USD

Google Flights

Returning

Fri, Jan 2, 2026•10 Day Trip

$1,134 USD

Google Flights

Returning

Sat, Jan 3, 2026•11 Day Trip

$1,166 USD

Google Flights

Returning

Sun, Jan 4, 2026•12 Day Trip

$1,108 USD

Google Flights

Returning

Mon, Jan 5, 2026•13 Day Trip

$936 USD

Google Flights

Returning

Tue, Jan 6, 2026•14 Day Trip

$922 USD

Google Flights