AirHint found the following cheapest return flights from Newark (EWR) to San Jose (SJO) in October 2025 (see full year).

Return flights

08 Oct - 15 Oct	United
07 Oct - 28 Oct	United
28 Oct - 11 Nov	United
28 Oct - 02 Nov	United
07 Oct - 15 Oct	United
08 Oct - 22 Oct	United
21 Oct - 23 Oct	United
09 Oct - 14 Oct	American Airlines
15 Oct - 22 Oct	United
27 Oct - 28 Oct	Spirit Airlines
15 Oct - 21 Oct	Spirit Airlines
15 Oct - 28 Oct	Spirit Airlines
27 Oct - 11 Nov	Spirit Airlines
25 Oct - 11 Nov	Spirit Airlines
29 Oct - 11 Nov	Spirit Airlines
21 Oct - 11 Nov	Spirit Airlines
27 Oct - 05 Nov	Spirit Airlines
27 Oct - 12 Nov	Spirit Airlines
15 Oct - 05 Nov	Spirit Airlines
25 Oct - 05 Nov	Spirit Airlines

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

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 October from 215€

Return flights