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

Return flights

28 Oct - 11 Nov	Air France
28 Oct - 04 Nov	Air France
19 Oct - 26 Oct	Icelandair
14 Oct - 22 Oct	Air Canada
15 Oct - 23 Oct	Air Canada
16 Oct - 23 Oct	Air Canada
15 Oct - 20 Oct	Air Canada
23 Oct - 02 Nov	Air Canada
23 Oct - 11 Nov	Air Canada
23 Oct - 27 Oct	Air Canada
10 Oct - 19 Oct	Air Canada
10 Oct - 23 Oct	Air Canada
22 Oct - 31 Oct	Air Canada
14 Oct - 28 Oct	Air Canada
23 Oct - 03 Nov	Air Canada
22 Oct - 01 Nov	Air Canada
30 Oct - 29 Nov	Air Canada
19 Oct - 01 Nov	Air Canada
30 Oct - 04 Nov	Air Canada
30 Oct - 08 Nov	Air Canada

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 $703

Return flights