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

Return flights

05 Sep - 08 Sep	United
15 Sep - 02 Oct	Delta
26 Sep - 03 Oct	Delta
30 Sep - 07 Oct	Delta
25 Sep - 02 Oct	Southwest Airlines
19 Sep - 03 Oct	Spirit Airlines
19 Sep - 07 Oct	Spirit Airlines
17 Sep - 03 Oct	Spirit Airlines
17 Sep - 07 Oct	Spirit Airlines
05 Sep - 10 Sep	Spirit Airlines
05 Sep - 13 Sep	Spirit Airlines
15 Sep - 03 Oct	Spirit Airlines
30 Sep - 03 Oct	Spirit Airlines
05 Sep - 12 Sep	Spirit Airlines
05 Sep - 11 Sep	Spirit Airlines
01 Sep - 08 Sep	Spirit Airlines
01 Sep - 13 Sep	Spirit Airlines
01 Sep - 10 Sep	Spirit Airlines
01 Sep - 12 Sep	Spirit Airlines
01 Sep - 11 Sep	Spirit Airlines

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

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 Las Vegas to San Jose in September from 268€

Return flights