Cheapest return flights from Austin to San Juan in April from $240

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

Return flights

12 Apr - 18 Apr Southwest Airlines
25 Apr - 02 May Southwest Airlines
11 Apr - 18 Apr Southwest Airlines
30 Apr - 02 May Spirit Airlines
30 Apr - 10 May Southwest Airlines
30 Apr - 03 May Southwest Airlines
30 Apr - 20 May Spirit Airlines
25 Apr - 10 May Spirit Airlines
25 Apr - 03 May Spirit Airlines
15 Apr - 20 Apr American Airlines
23 Apr - 26 Apr Southwest Airlines
12 Apr - 02 May Spirit Airlines
12 Apr - 03 May Spirit Airlines
11 Apr - 02 May Spirit Airlines
24 Apr - 27 Apr Spirit Airlines

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

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