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

Return flights

20 Sep - 04 Oct	Avianca
17 Sep - 30 Sep	Air Canada
21 Sep - 30 Sep	Air Canada
12 Sep - 23 Sep	Air Canada
01 Sep - 13 Sep	Air Canada
10 Sep - 17 Sep	United
09 Sep - 16 Sep	United
01 Sep - 20 Sep	United
27 Sep - 12 Oct	United
11 Sep - 23 Sep	KLM
14 Sep - 21 Sep	Iberia
18 Sep - 30 Sep	KLM
29 Sep - 13 Oct	Avianca

Also check the deals for one-way flights from San Jose to Tokyo 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 San Jose to Tokyo in September from 1028€

Return flights