Cheapest one-way flights from Austin to San Juan in January from 105€

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

One-Way flights

11 Jan United
21 Jan Spirit Airlines
22 Jan Spirit Airlines
03 Jan Spirit Airlines
05 Jan Spirit Airlines
20 Jan Spirit Airlines
04 Jan Spirit Airlines
02 Jan Spirit Airlines
16 Jan Spirit Airlines
03 Jan Southwest Airlines direct

Also check the deals for return 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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