Austin (AUS) to San Juan (SJU) flight deal from $245 USD in economy class

UAUnited Airlines

Round Trip•Economy

AUS

Austin-Bergstrom International Ai

Austin, United States

SJU

Luis Muñoz Marín International Airport

San Juan, Puerto Rico

$444 USD

-45%$245 USD

Verified Nov 30, 2025 at 4:31 AM

January 2026

Today

Mon

Tue

Wed

Thu

Fri

Sat

Sun

29$508 30$394 31$245 1$354 2$399 3$305 4$280 5$245 6$305 7$354 8$399 9$402 10$376 11$245 12$245 13$245 14$361 15$367 16$402 17$354 18$245 19$245 20$245 21$245 22$307 23$399 24$267 25$245 26$245 27$245 28$245 29$307 30$352 31$245 1

Limited Availability

17% 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

$411 USD

Google Flights

Returning

Sat, Jan 10, 2026•6 Day Trip

$434 USD

Google Flights

Returning

Sun, Jan 11, 2026•7 Day Trip

$408 USD

Google Flights

Returning

Mon, Jan 12, 2026•8 Day Trip

$389 USD

Google Flights

Returning

Tue, Jan 13, 2026•9 Day Trip

$320 USD

Google Flights

Returning

Wed, Jan 14, 2026•10 Day Trip

$280 USD

Google Flights

Returning

Thu, Jan 15, 2026•11 Day Trip

$280 USD

Google Flights

Returning

Fri, Jan 16, 2026•12 Day Trip

$353 USD

Google Flights

Returning

Sat, Jan 17, 2026•13 Day Trip

$340 USD

Google Flights

Returning

Sun, Jan 18, 2026•14 Day Trip

$441 USD

Google Flights