Cheapest return flights from Austin to San Juan in December from 352€

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

Return flights

02 Dec - 04 Dec Spirit Airlines
30 Dec - 14 Jan jetBlue
02 Dec - 20 Dec Spirit Airlines
17 Dec - 07 Jan jetBlue
13 Dec - 20 Dec Spirit Airlines
13 Dec - 24 Dec Spirit Airlines
17 Dec - 20 Dec Spirit Airlines
17 Dec - 24 Dec Spirit Airlines
13 Dec - 03 Jan American Airlines
30 Dec - 19 Jan Spirit Airlines
13 Dec - 26 Dec Spirit Airlines
17 Dec - 26 Dec Spirit Airlines
13 Dec - 27 Dec Spirit Airlines
30 Dec - 09 Jan Spirit Airlines
23 Dec - 10 Jan Southwest Airlines
17 Dec - 27 Dec Spirit Airlines
28 Dec - 09 Jan Spirit Airlines
27 Dec - 09 Jan Spirit Airlines
30 Dec - 07 Jan Spirit Airlines
28 Dec - 07 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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