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

Return flights

14 Apr - 24 Apr	Air Canada
07 Apr - 14 Apr	Air Canada
09 Apr - 17 Apr	Air Canada
11 Apr - 19 Apr	Air Canada
15 Apr - 29 Apr	SWISS
13 Apr - 24 Apr	Air Canada
10 Apr - 24 Apr	Air Canada
10 Apr - 26 Apr	Air Canada
21 Apr - 09 May	Air Canada
23 Apr - 09 May	Air Canada
01 Apr - 06 Apr	United
08 Apr - 22 Apr	United
18 Apr - 06 May	Air Canada
23 Apr - 03 May	Air Canada
24 Apr - 08 May	Air Canada
20 Apr - 10 May	Air Canada
27 Apr - 09 May	Air Canada
24 Apr - 03 May	Air Canada
18 Apr - 01 May	Air Canada
23 Apr - 02 May	Air France

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

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 April from $621

Return flights