Austin (AUS) to San Juan (SJU) flight deal from $197 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

$438 USD

-55%$197 USD

Verified Nov 5, 2025 at 3:54 AM

December 2025

Today

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Tue

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Sun

1$433 2$412 3$409 4$471 5$458 6$307 7$307 8$307 9$272 10$268 11$408 12$502 13$407 14$410 15$470 16$406 17$469 18$640 19$697 20$705 21$847 22$864 23$770 24$850 25$722 26$785 27$562 28$628 29$517 30$424 31$300 1 2 3 4

Extremely Rare Availability

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

Monday, December 15th, 2025

10 round-trip options

Returning

Sat, Dec 20, 2025•5 Day Trip

$530 USD

Google Flights

Returning

Sun, Dec 21, 2025•6 Day Trip

$679 USD

Google Flights

Returning

Mon, Dec 22, 2025•7 Day Trip

$511 USD

Google Flights

Returning

Tue, Dec 23, 2025•8 Day Trip

$599 USD

Google Flights

Returning

Wed, Dec 24, 2025•9 Day Trip

$470 USD

Google Flights

Returning

Thu, Dec 25, 2025•10 Day Trip

$551 USD

Google Flights

Returning

Fri, Dec 26, 2025•11 Day Trip

$696 USD

Google Flights

Returning

Sat, Dec 27, 2025•12 Day Trip

$775 USD

Google Flights

Returning

Sun, Dec 28, 2025•13 Day Trip

$825 USD

Google Flights

Returning

Mon, Dec 29, 2025•14 Day Trip

$723 USD

Google Flights