Cheapest return SFO–SJO flights, May

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

Return flights

27 May - 01 Jun Frontier Airlines
30 May - 02 Jun Alaska Airlines
12 May - 20 May Frontier Airlines
16 May - 23 May Frontier Airlines
18 May - 25 May Frontier Airlines
26 May - 08 Jun Frontier Airlines
15 May - 23 May Frontier Airlines
14 May - 23 May Frontier Airlines
11 May - 15 May Frontier Airlines
19 May - 26 May Frontier Airlines
28 May - 29 May Avianca
15 May - 24 May Frontier Airlines
28 May - 31 May Frontier Airlines
30 May - 02 Jun United direct
27 May - 01 Jun United direct
26 May - 08 Jun United direct

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

Powered by

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.

Book a cheap hotel in San Jose

Cheap car rent in San Jose

Feel free to contact us with any feedback or request another flight research.