Cheapest one-way flights from Austin to San Juan in March from 106€

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

One-Way flights

15 Mar United
07 Mar Frontier Airlines
18 Mar Spirit Airlines
12 Mar Frontier Airlines
20 Mar Spirit Airlines
21 Mar Southwest Airlines direct
07 Mar Southwest Airlines direct
14 Mar Southwest Airlines direct

Also check the deals for return flights from Austin to San Juan in March.

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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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