AirHint found the following cheapest return flights from San Jose (SJC) to London (LHR) in May 2026 (see full year).

Return flights

04 May - 12 May	British Airways
01 May - 12 May	British Airways
05 May - 10 May	British Airways
01 May - 10 May	Delta
13 May - 19 May	British Airways
09 May - 27 May	British Airways
13 May - 17 May	British Airways
19 May - 02 Jun	British Airways
20 May - 25 May	British Airways
18 May - 25 May	British Airways
31 May - 09 Jun	British Airways
26 May - 16 Jun	Icelandair
26 May - 15 Jun	Icelandair
29 May - 07 Jun	Icelandair
13 May - 29 Jun	British Airways
25 May - 15 Jun	British Airways
27 May - 13 Jun	British Airways
16 May - 25 May	Finnair
23 May - 01 Jun	Finnair

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

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 May from $673

Return flights