AirHint found the following cheapest return flights from Atlanta (ATL) to San Jose (SJO) in December 2025 (see full year).

Return flights

06 Dec - 13 Dec	Spirit Airlines
06 Dec - 17 Dec	Spirit Airlines
06 Dec - 24 Dec	Spirit Airlines
12 Dec - 22 Dec	Delta	direct
06 Dec - 12 Dec	Delta	direct
06 Dec - 20 Dec	Spirit Airlines
12 Dec - 17 Dec	Delta	direct
06 Dec - 13 Dec	Delta	direct
16 Dec - 22 Dec	Southwest Airlines
06 Dec - 22 Dec	Spirit Airlines
28 Dec - 15 Jan	Spirit Airlines
22 Dec - 04 Jan	Frontier Airlines
28 Dec - 04 Jan	Spirit Airlines
15 Dec - 04 Jan	Spirit Airlines
16 Dec - 04 Jan	Spirit Airlines
17 Dec - 04 Jan	Spirit Airlines
14 Dec - 04 Jan	Spirit Airlines
21 Dec - 04 Jan	Spirit Airlines
22 Dec - 04 Jan	Delta	direct

Also check the deals for one-way flights from Atlanta to San Jose in December.

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 Atlanta to San Jose in December from 300€

Return flights