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

Return flights

06 May - 18 May	Air Canada
06 May - 21 May	Air Canada
11 May - 25 May	Air Canada
07 May - 10 May	Air Canada
01 May - 09 May	Air Canada
19 May - 29 May	Air Canada
15 May - 29 May	Air Canada
01 May - 16 May	Air Canada
11 May - 18 May	Air Canada
02 May - 17 May	Air Canada
24 May - 07 Jun	Air France
25 May - 08 Jun	KLM
28 May - 12 Jun	Air Canada
24 May - 03 Jun	Air France
26 May - 01 Jun	United
23 May - 01 Jun	Air Canada

Also check the deals for one-way flights from London to San Jose 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 London to San Jose in May from $706

Return flights