AirHint found the following cheapest return flights from Atlanta (ATL) to San Jose (SJO) in March 2026 (see full year).

Return flights

03 Mar - 09 Mar	Spirit Airlines
05 Mar - 09 Mar	Frontier Airlines
06 Mar - 09 Mar	Frontier Airlines
05 Mar - 14 Mar	Frontier Airlines
06 Mar - 23 Mar	Frontier Airlines
10 Mar - 14 Mar	Frontier Airlines
27 Mar - 29 Mar	Frontier Airlines
03 Mar - 09 Mar	Delta	direct
05 Mar - 09 Mar	Delta	direct
20 Mar - 23 Mar	Frontier Airlines

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

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 March from 326€

Return flights