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

Return flights

28 Oct - 11 Nov	KLM
28 Oct - 04 Nov	KLM
30 Oct - 11 Nov	SWISS
28 Oct - 06 Nov	SWISS
07 Oct - 14 Oct	SWISS
30 Oct - 06 Nov	SWISS
29 Oct - 05 Nov	KLM
22 Oct - 30 Oct	Lufthansa
08 Oct - 15 Oct	SWISS
09 Oct - 28 Oct	SWISS
10 Oct - 19 Oct	Lufthansa
23 Oct - 30 Oct	SWISS
22 Oct - 29 Oct	Lufthansa
10 Oct - 18 Oct	SWISS
31 Oct - 12 Nov	KLM
08 Oct - 16 Oct	SWISS
24 Oct - 01 Nov	SWISS
24 Oct - 02 Nov	SWISS
20 Oct - 26 Oct	KLM
27 Oct - 27 Nov	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 $788

Return flights