Austin (AUS) to San Juan (SJU) cheap 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

$476 USD

-49%$245 USD

Verified Sep 21, 2025 at 9:48 PM

October 2025

Today

Mon

Tue

Wed

Thu

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Sat

Sun

29$395 30$395 1$395 2$395 3$395 4$383 5$390 6$383 7$383 8$346 9$519 10$517 11$421 12$401 13$465 14$245 15$265 16$360 17$419 18$308 19$309 20$636 21$245 22$265 23$415 24$420 25$245 26$340 27$281 28$245 29$245 30$345 31$265 1 2

Limited Availability

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

Saturday, October 11th, 2025

10 round-trip options

Returning

Thu, Oct 16, 2025•5 Day Trip

$642 USD

Google Flights

Returning

Fri, Oct 17, 2025•6 Day Trip

$562 USD

Google Flights

Returning

Sat, Oct 18, 2025•7 Day Trip

$484 USD

Google Flights

Returning

Sun, Oct 19, 2025•8 Day Trip

$736 USD

Google Flights

Returning

Mon, Oct 20, 2025•9 Day Trip

$703 USD

Google Flights

Returning

Tue, Oct 21, 2025•10 Day Trip

$486 USD

Google Flights

Returning

Wed, Oct 22, 2025•11 Day Trip

$447 USD

Google Flights

Returning

Thu, Oct 23, 2025•12 Day Trip

$452 USD

Google Flights

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Fri, Oct 24, 2025•13 Day Trip

$441 USD

Google Flights

Returning

Sat, Oct 25, 2025•14 Day Trip

$421 USD

Google Flights