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

Return flights

13 May - 20 May	United
01 May - 04 May	American Airlines
08 May - 15 May	jetBlue
20 May - 24 May	jetBlue
03 May - 08 May	Arajet
21 May - 25 May	Volaris El Salvador
02 May - 07 May	United
04 May - 08 May	United	direct
01 May - 04 May	United	direct
21 May - 25 May	United	direct

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

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 Newark to San Jose in May from $276

Return flights