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

Return flights

07 Apr - 19 Apr	Air Canada
09 Apr - 14 Apr	Air Canada
22 Apr - 30 Apr	Air Canada
16 Apr - 26 Apr	Air Canada
10 Apr - 24 Apr	Air Canada
30 Apr - 13 May	Air Canada
29 Apr - 13 May	Air Canada
25 Apr - 16 May	Air Canada
13 Apr - 24 Apr	Air Canada
11 Apr - 24 Apr	Air Canada
19 Apr - 01 May	Air Canada
18 Apr - 29 Apr	Air Canada
28 Apr - 13 May	Air Canada
17 Apr - 01 May	Air Canada
18 Apr - 01 May	Air Canada
10 Apr - 23 Apr	Air Canada
16 Apr - 25 Apr	Avianca
17 Apr - 02 May	Avianca
18 Apr - 02 May	Avianca
19 Apr - 02 May	Avianca

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 650€

Return flights