Cheapest return flights from Boston to San Jose in September from 167€

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

Return flights

29 Sep - 08 Oct Spirit Airlines
29 Sep - 01 Oct Spirit Airlines
29 Sep - 15 Oct Spirit Airlines
29 Sep - 11 Oct Spirit Airlines
29 Sep - 18 Oct Spirit Airlines
30 Sep - 08 Oct Spirit Airlines
30 Sep - 01 Oct Spirit Airlines
30 Sep - 11 Oct Spirit Airlines
30 Sep - 15 Oct Spirit Airlines
26 Sep - 08 Oct Spirit Airlines
28 Sep - 29 Sep Spirit Airlines
24 Sep - 29 Sep Spirit Airlines
24 Sep - 26 Sep Spirit Airlines
26 Sep - 27 Sep Spirit Airlines
24 Sep - 25 Sep Spirit Airlines
20 Sep - 27 Sep Copa
19 Sep - 24 Sep Copa
26 Sep - 28 Sep Spirit Airlines
21 Sep - 29 Sep Spirit Airlines
21 Sep - 26 Sep Spirit Airlines

Also check the deals for one-way flights from Boston 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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