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

Return flights

28 Apr - 18 May	SWISS
28 Apr - 13 May	SWISS
29 Apr - 28 May	SWISS
27 Apr - 11 May	Lufthansa
15 Apr - 14 May	SWISS
23 Apr - 07 May	SWISS
21 Apr - 27 Apr	SWISS
15 Apr - 27 Apr	Iberia
29 Apr - 19 May	KLM
28 Apr - 14 May	Iberia
24 Apr - 11 May	Lufthansa
20 Apr - 27 Apr	Lufthansa
09 Apr - 20 Apr	SWISS
16 Apr - 27 Apr	Iberia
23 Apr - 04 May	SWISS
01 Apr - 12 Apr	KLM
05 Apr - 20 Apr	SWISS
21 Apr - 28 Apr	SWISS
15 Apr - 22 Apr	SWISS
13 Apr - 22 Apr	Lufthansa

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 671€

Return flights