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

Return flights

30 Jun - 08 Jul	ITA Airways
30 Jun - 07 Jul	ITA Airways
29 Jun - 06 Jul	ITA Airways
28 Jun - 02 Jul	ITA Airways
29 Jun - 23 Jul	ITA Airways
28 Jun - 07 Jul	ITA Airways
30 Jun - 31 Jul	Icelandair
30 Jun - 09 Jul	Icelandair
30 Jun - 06 Jul	ITA Airways
30 Jun - 05 Jul	Icelandair

Also check the deals for one-way flights from San Jose to London in June.

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 June from $1418

Return flights