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

Return flights

15 Aug - 19 Aug	Spirit Airlines
04 Aug - 05 Aug	Spirit Airlines
04 Aug - 12 Aug	Spirit Airlines
22 Aug - 29 Aug	Spirit Airlines
03 Aug - 05 Aug	Spirit Airlines
03 Aug - 12 Aug	Spirit Airlines
18 Aug - 22 Aug	Spirit Airlines
18 Aug - 29 Aug	Spirit Airlines
18 Aug - 24 Aug	Spirit Airlines
18 Aug - 31 Aug	Spirit Airlines

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

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 August from $291

Return flights