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

Return flights

01 Dec - 11 Dec	easyJet
04 Dec - 11 Dec	easyJet
05 Dec - 12 Dec	easyJet
01 Dec - 14 Dec	easyJet
16 Dec - 30 Dec	easyJet
06 Dec - 16 Dec	Ryanair
06 Dec - 21 Dec	Ryanair
03 Dec - 20 Dec	easyJet
07 Dec - 14 Dec	easyJet
04 Dec - 20 Dec	easyJet
28 Dec - 10 Jan	Wizz Air Malta
13 Dec - 01 Jan	Ryanair
16 Dec - 17 Jan	easyJet
31 Dec - 24 Jan	easyJet
27 Dec - 17 Jan	easyJet
30 Dec - 13 Jan	easyJet
25 Dec - 01 Jan	Wizz Air Malta
29 Dec - 10 Jan	easyJet
30 Dec - 10 Jan	easyJet
18 Dec - 13 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 711€

Return flights