AirHint found the following cheapest return flights from London (LON) to San Jose (SJO) in December 2025 (see full year).

Return flights

27 Dec - 17 Jan	Lufthansa
27 Dec - 14 Jan	Lufthansa
26 Dec - 14 Jan	Lufthansa
27 Dec - 24 Jan	Lufthansa
27 Dec - 15 Jan	Lufthansa
27 Dec - 27 Jan	Lufthansa
27 Dec - 20 Jan	Lufthansa
26 Dec - 20 Jan	Lufthansa
26 Dec - 01 Jan	Lufthansa
27 Dec - 01 Jan	Lufthansa
23 Dec - 31 Dec	Lufthansa
22 Dec - 29 Dec	Lufthansa
23 Dec - 30 Dec	Lufthansa
25 Dec - 29 Dec	Lufthansa
22 Dec - 31 Dec	Lufthansa
21 Dec - 31 Dec	Lufthansa
25 Dec - 31 Dec	Lufthansa
21 Dec - 29 Dec	Lufthansa
25 Dec - 30 Dec	Lufthansa
24 Dec - 28 Dec	Lufthansa

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

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.

Book a cheap hotel in San Jose

Cheap car rent in San Jose

Cheapest return flights from London to San Jose in December from 675€

Return flights