Cheapest return flights from Austin to San Juan in December from 207€

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

Return flights

11 Dec - 17 Dec Delta
08 Dec - 11 Dec Frontier Airlines
03 Dec - 05 Dec Spirit Airlines
08 Dec - 17 Dec Spirit Airlines
02 Dec - 05 Dec Spirit Airlines
03 Dec - 11 Dec Spirit Airlines
03 Dec - 17 Dec Spirit Airlines
04 Dec - 11 Dec Spirit Airlines
04 Dec - 17 Dec Spirit Airlines
04 Dec - 05 Dec Spirit Airlines
31 Dec - 19 Jan Spirit Airlines
30 Dec - 06 Jan Frontier Airlines
31 Dec - 05 Jan United
29 Dec - 19 Jan Spirit Airlines
30 Dec - 19 Jan Spirit Airlines
15 Dec - 05 Jan Spirit Airlines
29 Dec - 06 Jan Spirit Airlines
16 Dec - 06 Jan Spirit Airlines
28 Dec - 06 Jan Spirit Airlines
29 Dec - 05 Jan Spirit Airlines

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

Skyscanner

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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