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

Return flights

28 Oct - 04 Nov	SWISS
28 Oct - 11 Nov	SWISS
28 Oct - 13 Nov	SWISS
30 Oct - 06 Nov	SWISS
30 Oct - 13 Nov	SWISS
31 Oct - 10 Nov	SWISS
23 Oct - 30 Oct	Lufthansa
21 Oct - 28 Oct	SWISS
14 Oct - 21 Oct	SWISS
02 Oct - 06 Nov	SWISS
09 Oct - 23 Oct	SWISS
09 Oct - 16 Oct	SWISS
14 Oct - 22 Oct	SWISS
02 Oct - 16 Oct	SWISS
28 Oct - 09 Nov	KLM
31 Oct - 16 Nov	KLM
28 Oct - 08 Nov	SWISS
16 Oct - 30 Oct	SWISS
16 Oct - 28 Oct	SWISS
02 Oct - 11 Oct	SWISS

Also check the deals for one-way flights from London 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 London to San Jose in October from $809

Return flights