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

Return flights

12 Jan - 11 Feb	jetBlue
27 Jan - 12 Feb	Air Canada
20 Jan - 31 Jan	Air Canada
18 Jan - 31 Jan	Air Canada
23 Jan - 31 Jan	Air Canada
13 Jan - 26 Jan	Air Canada
23 Jan - 09 Feb	Air Canada
30 Jan - 11 Feb	Air Canada
16 Jan - 07 Feb	Brussels Airlines
13 Jan - 24 Jan	Air Canada
15 Jan - 22 Jan	Air Canada
20 Jan - 27 Jan	Air Canada
13 Jan - 25 Jan	Air Canada
15 Jan - 27 Jan	Air Canada
13 Jan - 27 Jan	Air Canada
29 Jan - 12 Feb	Air Canada
28 Jan - 13 Feb	Air Canada
29 Jan - 14 Feb	Air Canada
20 Jan - 03 Feb	Air Canada
25 Jan - 06 Feb	Air Canada

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 628€

Return flights