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

Return flights

20 Jan - 03 Feb	Air Dolomiti
27 Jan - 10 Feb	Air Dolomiti
13 Jan - 22 Jan	SWISS
16 Jan - 22 Jan	SWISS
12 Jan - 22 Jan	SWISS
15 Jan - 22 Jan	SWISS
08 Jan - 22 Jan	Air Dolomiti
30 Jan - 11 Feb	SWISS
28 Jan - 07 Feb	SWISS
15 Jan - 31 Jan	SWISS
09 Jan - 25 Jan	SWISS
21 Jan - 31 Jan	SWISS
22 Jan - 12 Feb	SWISS
20 Jan - 12 Feb	SWISS
30 Jan - 15 Feb	SWISS
20 Jan - 13 Feb	SWISS
22 Jan - 08 Feb	SWISS
16 Jan - 06 Feb	SWISS
13 Jan - 29 Jan	Air Dolomiti
08 Jan - 18 Jan	SWISS

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 704€

Return flights