Cheapest return flights from Austin to San Juan in April from $255

Best time to book flights for Austin (AUS) to San Juan (SJU) flights at AirHint

AirHint found the following cheapest return flights from Austin (AUS) to San Juan (SJU) in April 2025 (see full year).

Return flights

26 Apr - 03 May American Airlines
15 Apr - 17 Apr Frontier Airlines
15 Apr - 24 Apr Frontier Airlines
12 Apr - 19 Apr Spirit Airlines
11 Apr - 14 Apr Frontier Airlines
24 Apr - 26 Apr Frontier Airlines
13 Apr - 16 Apr Frontier Airlines
24 Apr - 28 Apr Frontier Airlines
23 Apr - 29 Apr United
08 Apr - 15 Apr Spirit Airlines
05 Apr - 12 Apr Frontier Airlines

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

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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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