Cheapest return flights from Austin to San Juan in March from $336

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

Return flights

15 Mar - 19 Mar Frontier Airlines
31 Mar - 04 Apr American Airlines
11 Mar - 18 Mar Spirit Airlines
21 Mar - 28 Mar Frontier Airlines
11 Mar - 15 Mar Spirit Airlines
14 Mar - 18 Mar United
06 Mar - 18 Mar Spirit Airlines
16 Mar - 18 Mar Spirit Airlines
11 Mar - 20 Mar Spirit Airlines
11 Mar - 28 Mar Spirit Airlines
16 Mar - 21 Mar Frontier Airlines
31 Mar - 18 Apr Spirit Airlines
16 Mar - 04 Apr Spirit Airlines
14 Mar - 04 Apr Spirit Airlines
28 Mar - 18 Apr Spirit Airlines
17 Mar - 04 Apr Spirit Airlines
21 Mar - 04 Apr Spirit Airlines

Also check the deals for one-way 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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