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

Return flights

23 Apr - 09 May	SWISS
24 Apr - 09 May	SWISS
22 Apr - 09 May	Air Canada
17 Apr - 29 Apr	Air Canada
16 Apr - 26 Apr	Air Canada
12 Apr - 26 Apr	SWISS
17 Apr - 26 Apr	Air Canada
14 Apr - 25 Apr	Air Canada
01 Apr - 19 Apr	Lufthansa
02 Apr - 15 Apr	Lufthansa
03 Apr - 19 Apr	Lufthansa
02 Apr - 19 Apr	Lufthansa
16 Apr - 30 Apr	Air Canada

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 643€

Return flights