AirHint found the following cheapest return flights from San Juan (SJU) to San Jose (SJO) in January 2026 (see full year).

Return flights

16 Jan - 01 Feb	Spirit Airlines
30 Jan - 01 Feb	Spirit Airlines
16 Jan - 23 Jan	Spirit Airlines
29 Jan - 01 Feb	Spirit Airlines
15 Jan - 01 Feb	Spirit Airlines
15 Jan - 23 Jan	Spirit Airlines
19 Jan - 01 Feb	Spirit Airlines
16 Jan - 19 Jan	Spirit Airlines
19 Jan - 23 Jan	Spirit Airlines
15 Jan - 19 Jan	Spirit Airlines
12 Jan - 01 Feb	Spirit Airlines
12 Jan - 23 Jan	Spirit Airlines
12 Jan - 19 Jan	Spirit Airlines
02 Jan - 23 Jan	Spirit Airlines
02 Jan - 19 Jan	Spirit Airlines
02 Jan - 09 Jan	Spirit Airlines

Also check the deals for one-way flights from San Juan to San Jose in January.

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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Cheapest return flights from San Juan to San Jose in January from 320€

Return flights