AirHint found the following cheapest return flights from London (LHR) to San Jose (SJO) in January 2027 (see full year).

Return flights

15 Jan - 25 Jan	SWISS
12 Jan - 22 Jan	SWISS
12 Jan - 23 Jan	SWISS
15 Jan - 30 Jan	SWISS
13 Jan - 20 Jan	Air Canada
15 Jan - 24 Jan	Air Canada
22 Jan - 31 Jan	Air Canada
14 Jan - 23 Jan	SWISS
13 Jan - 27 Jan	Air Canada
16 Jan - 24 Jan	Air Canada
21 Jan - 03 Feb	Air Canada
13 Jan - 03 Feb	Air Canada
11 Jan - 01 Feb	Air Canada
12 Jan - 02 Feb	Air Canada
19 Jan - 03 Feb	Air Canada
19 Jan - 02 Feb	Air Canada
30 Jan - 01 Feb	SWISS
30 Jan - 03 Feb	SWISS
30 Jan - 02 Feb	SWISS
20 Jan - 04 Feb	Lufthansa

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

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 January from 647€

Return flights