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

Return flights

19 Jan - 26 Jan	Air Canada
11 Jan - 21 Jan	Air Canada
11 Jan - 26 Jan	Air Canada
13 Jan - 22 Jan	Air Canada
17 Jan - 26 Jan	Air Canada
28 Jan - 11 Feb	Air Canada
13 Jan - 24 Jan	Air Canada
22 Jan - 05 Feb	Air Canada
14 Jan - 04 Feb	Air Canada
10 Jan - 20 Jan	Air Canada
29 Jan - 08 Feb	United
29 Jan - 07 Feb	United
31 Jan - 08 Feb	United
29 Jan - 19 Feb	United
22 Jan - 02 Feb	United
22 Jan - 06 Feb	United
17 Jan - 03 Feb	United
15 Jan - 25 Jan	Air Canada
10 Jan - 27 Jan	Air Canada
10 Jan - 28 Jan	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 $616

Return flights