Cheapest return flights from Austin to San Juan in January from $172

AirHint found the following cheapest return flights from Austin (AUS) to San Juan (SJU) in January 2026 (see full year).

Return flights

24 Jan - 28 Jan Frontier Airlines
12 Jan - 16 Jan Spirit Airlines
20 Jan - 23 Jan Spirit Airlines
20 Jan - 27 Jan Spirit Airlines
20 Jan - 05 Feb Spirit Airlines
06 Jan - 15 Jan Spirit Airlines
20 Jan - 10 Feb Spirit Airlines
21 Jan - 27 Jan Spirit Airlines
17 Jan - 23 Jan Spirit Airlines
17 Jan - 28 Jan Spirit Airlines
17 Jan - 27 Jan Spirit Airlines
12 Jan - 23 Jan Spirit Airlines
17 Jan - 05 Feb Spirit Airlines
24 Jan - 11 Feb Spirit Airlines
24 Jan - 05 Feb Spirit Airlines
24 Jan - 10 Feb Spirit Airlines
21 Jan - 05 Feb Spirit Airlines
21 Jan - 10 Feb Spirit Airlines
20 Jan - 09 Feb Spirit Airlines
31 Jan - 11 Feb Spirit Airlines

Also check the deals for one-way flights from Austin to San Juan in January.

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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