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

Return flights

20 Jan - 27 Jan	Air Canada
19 Jan - 26 Jan	Lufthansa
11 Jan - 26 Jan	Air Canada
27 Jan - 17 Feb	SWISS
27 Jan - 06 Feb	SWISS
13 Jan - 21 Jan	Air Canada
27 Jan - 03 Feb	SWISS
12 Jan - 28 Jan	Lufthansa
23 Jan - 04 Feb	Lufthansa
24 Jan - 05 Feb	Lufthansa
26 Jan - 10 Feb	Lufthansa
23 Jan - 06 Feb	Lufthansa
19 Jan - 29 Jan	Lufthansa
19 Jan - 20 Feb	Lufthansa
12 Jan - 23 Feb	Lufthansa
26 Jan - 23 Feb	Lufthansa
08 Jan - 21 Jan	Lufthansa
15 Jan - 27 Jan	Lufthansa
15 Jan - 20 Jan	Lufthansa
22 Jan - 29 Jan	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 518€

Return flights