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

Return flights

13 Dec - 13 Jan	Ryanair
10 Dec - 16 Dec	Wizz Air Malta
09 Dec - 16 Dec	easyJet
13 Dec - 23 Dec	Ryanair
03 Dec - 15 Dec	easyJet
08 Dec - 15 Dec	Ryanair
13 Dec - 12 Jan	Ryanair
13 Dec - 11 Jan	Ryanair
12 Dec - 11 Jan	Wizz Air Malta
06 Dec - 13 Dec	easyJet
29 Dec - 12 Jan	Ryanair
29 Dec - 26 Jan	Ryanair
29 Dec - 19 Jan	Ryanair
12 Dec - 23 Dec	Wizz Air Malta
15 Dec - 24 Jan	Ryanair
03 Dec - 10 Dec	easyJet
10 Dec - 10 Jan	easyJet
07 Dec - 24 Dec	Wizz Air UK
04 Dec - 26 Jan	easyJet
02 Dec - 13 Dec	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 768€

Return flights