Cheapest return flights from Austin to Santiago in April from $393

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

Return flights

15 Apr - 21 Apr Spirit Airlines
15 Apr - 30 Apr Spirit Airlines
21 Apr - 30 Apr Spirit Airlines
27 Apr - 30 Apr Spirit Airlines
21 Apr - 06 May Spirit Airlines
27 Apr - 06 May Spirit Airlines
06 Apr - 15 Apr Spirit Airlines
06 Apr - 21 Apr Spirit Airlines
18 Apr - 21 Apr Spirit Airlines
18 Apr - 30 Apr Spirit Airlines
18 Apr - 06 May Spirit Airlines
30 Apr - 06 May Spirit Airlines
15 Apr - 18 Apr Spirit Airlines
15 Apr - 24 Apr Spirit Airlines
24 Apr - 06 May Spirit Airlines
15 Apr - 03 May Spirit Airlines
21 Apr - 03 May Spirit Airlines
27 Apr - 03 May Spirit Airlines
18 Apr - 03 May Spirit Airlines
30 Apr - 03 May Spirit Airlines

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

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