Cheapest one-way flights from Newark to San Jose in September from 61€

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

One-Way flights

23 Sep Spirit Airlines
14 Sep Spirit Airlines
24 Sep Spirit Airlines
22 Sep Spirit Airlines
26 Sep Spirit Airlines
30 Sep Spirit Airlines
29 Sep Spirit Airlines
16 Sep Spirit Airlines
17 Sep Spirit Airlines
09 Sep United direct

Also check the deals for return 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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