Cheapest return EWR–SJO flights, May

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

Return flights

27 May - 02 Jun Arajet
06 May - 13 May Arajet
20 May - 28 May Frontier Airlines
06 May - 19 May Arajet
06 May - 23 May Arajet
07 May - 14 May American Airlines
05 May - 09 May United
13 May - 20 May Arajet
09 May - 12 May United
06 May - 12 May United
04 May - 08 May United
30 May - 04 Jun United
27 May - 01 Jun Arajet
29 May - 06 Jun United direct
28 May - 02 Jun United
30 May - 13 Jun United
13 May - 26 Jun United
26 May - 09 Jun United
28 May - 01 Jun Air Canada
29 May - 04 Jun United

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

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