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

Return flights

01 Oct - 08 Oct	Spirit Airlines
24 Oct - 12 Nov	Spirit Airlines
06 Oct - 11 Oct	Spirit Airlines
30 Oct - 16 Nov	Spirit Airlines
14 Oct - 21 Oct	Icelandair
10 Oct - 21 Oct	Icelandair
03 Oct - 06 Oct	Icelandair
31 Oct - 16 Nov	Icelandair

Also check the deals for one-way flights from San Jose to London 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 San Jose to London in October from $599

Return flights