Cheapest one-way flights from San Antonio to San Juan in December from 90€

AirHint found the following cheapest one-way flights from San Antonio (SAT) to San Juan (SJU) in December 2025 (see full year).

One-Way flights

31 Dec Spirit Airlines direct
04 Dec Spirit Airlines
13 Dec Spirit Airlines
05 Dec Spirit Airlines direct
17 Dec Spirit Airlines direct
01 Dec Spirit Airlines
29 Dec Frontier Airlines
29 Dec Spirit Airlines direct
18 Dec Spirit Airlines
26 Dec Spirit Airlines direct

Also check the deals for return flights from San Antonio to San Juan in December.

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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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