Cheapest return flights from Austin to San Juan in January from 373€

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

Return flights

14 Jan - 18 Jan United
08 Jan - 12 Jan Southwest Airlines
04 Jan - 18 Jan Spirit Airlines
08 Jan - 18 Jan Spirit Airlines
04 Jan - 12 Jan Spirit Airlines
04 Jan - 11 Jan Southwest Airlines
08 Jan - 11 Jan Spirit Airlines

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

Skyscanner

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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