Cheapest return flights from Austin to San Juan in January from 170€

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

Return flights

12 Jan - 15 Jan United
20 Jan - 23 Jan United
19 Jan - 24 Jan Southwest Airlines
06 Jan - 15 Jan Spirit Airlines
08 Jan - 13 Jan Spirit Airlines
05 Jan - 12 Jan Frontier Airlines
08 Jan - 24 Jan Spirit Airlines
12 Jan - 24 Jan Spirit Airlines
21 Jan - 24 Jan Spirit Airlines
12 Jan - 13 Jan Spirit Airlines
12 Jan - 01 Feb Spirit Airlines
21 Jan - 01 Feb Spirit Airlines
19 Jan - 01 Feb Spirit Airlines
21 Jan - 08 Feb Spirit Airlines
19 Jan - 08 Feb Spirit Airlines
17 Jan - 01 Feb Spirit Airlines
15 Jan - 01 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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