Cheapest return flights from Newark to San Jose in September from 166€

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

Return flights

09 Sep - 17 Sep Spirit Airlines
13 Sep - 17 Sep Spirit Airlines
10 Sep - 17 Sep Spirit Airlines
03 Sep - 17 Sep Spirit Airlines
03 Sep - 09 Sep Spirit Airlines
06 Sep - 17 Sep Spirit Airlines
06 Sep - 09 Sep Spirit Airlines
02 Sep - 17 Sep Spirit Airlines
02 Sep - 09 Sep Spirit Airlines
13 Sep - 16 Sep Spirit Airlines
30 Sep - 04 Oct United
27 Sep - 06 Oct United
13 Sep - 01 Oct Spirit Airlines
13 Sep - 02 Oct Spirit Airlines
29 Sep - 04 Oct United
13 Sep - 03 Oct Spirit Airlines
16 Sep - 04 Oct Spirit Airlines
16 Sep - 01 Oct Spirit Airlines
16 Sep - 02 Oct Spirit Airlines
16 Sep - 06 Oct Spirit Airlines

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

Skyscanner

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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