AirHint found the following cheapest return flights from Frankfurt (FRA) to San Jose (SJO) in October 2025 (see full year).

Return flights

07 Oct - 16 Oct	SWISS
28 Oct - 04 Nov	SWISS
28 Oct - 15 Nov	Air Canada
28 Oct - 13 Nov	Air Canada
28 Oct - 25 Nov	Air Canada
28 Oct - 18 Nov	Air Canada
02 Oct - 24 Oct	Lufthansa
02 Oct - 23 Oct	Air France
02 Oct - 11 Oct	Air France
02 Oct - 16 Oct	Air France
02 Oct - 18 Oct	Air France
02 Oct - 09 Oct	Air France
31 Oct - 10 Nov	Air France
31 Oct - 07 Nov	Air France
27 Oct - 12 Nov	Air Canada
27 Oct - 24 Nov	Air Canada
27 Oct - 14 Nov	Air Canada
02 Oct - 14 Oct	Lufthansa	direct
02 Oct - 21 Oct	Lufthansa	direct
02 Oct - 16 Oct	Lufthansa	direct

Also check the deals for one-way flights from Frankfurt to San Jose in October.

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 Frankfurt to San Jose in October from 509€

Return flights