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

Return flights

02 Dec - 09 Dec	easyJet
04 Dec - 31 Jan	Wizz Air Malta
04 Dec - 26 Jan	Wizz Air Malta
06 Dec - 09 Dec	Wizz Air Malta
15 Dec - 12 Jan	Wizz Air Malta
02 Dec - 24 Jan	Wizz Air Malta
28 Dec - 08 Jan	easyJet
13 Dec - 08 Jan	Ryanair
13 Dec - 13 Jan	Ryanair
11 Dec - 23 Dec	Wizz Air Malta
06 Dec - 20 Dec	Wizz Air Malta
02 Dec - 11 Dec	Wizz Air Malta
11 Dec - 27 Dec	Wizz Air Malta
13 Dec - 15 Jan	Ryanair
04 Dec - 20 Dec	Wizz Air Malta
31 Dec - 10 Jan	easyJet
06 Dec - 22 Dec	easyJet
10 Dec - 22 Dec	Wizz Air Malta
13 Dec - 23 Dec	Ryanair
27 Dec - 08 Jan	easyJet

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.

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Cheapest return flights from London to San Jose in December from 709€

Return flights