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

Return flights

19 May - 29 May	British Airways
10 May - 30 May	British Airways
12 May - 06 Jun	British Airways
18 May - 13 Jun	British Airways
01 May - 25 May	British Airways
05 May - 15 May	Lufthansa
05 May - 27 May	Lufthansa
05 May - 29 May	Lufthansa
20 May - 06 Jun	Delta
01 May - 12 May	Lufthansa
05 May - 30 May	Lufthansa
02 May - 10 May	Icelandair
19 May - 02 Jun	Icelandair
26 May - 07 Jun	Icelandair
23 May - 13 Jun	British Airways
26 May - 15 Jun	Icelandair
29 May - 11 Jun	Icelandair
31 May - 15 Jun	Icelandair
27 May - 20 Jun	Icelandair

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 $759

Return flights