Cheapest return ATL–SJO flights, May

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

Return flights

26 May - 31 May Frontier Airlines
31 May - 04 Jun Frontier Airlines
28 May - 01 Jun Frontier Airlines
25 May - 28 May Southwest Airlines
29 May - 01 Jun Frontier Airlines
15 May - 23 May Southwest Airlines
12 May - 20 May Southwest Airlines
24 May - 28 May Frontier Airlines
24 May - 27 May Frontier Airlines
17 May - 21 May Frontier Airlines
21 May - 27 May Frontier Airlines
22 May - 28 May Frontier Airlines
20 May - 25 May Frontier Airlines
28 May - 02 Jun Delta direct
28 May - 01 Jun Delta direct
29 May - 01 Jun Delta direct

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

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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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