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

Return flights

02 Dec - 08 Dec	easyJet
02 Dec - 09 Dec	Ryanair
02 Dec - 16 Dec	Ryanair
11 Dec - 27 Jan	Ryanair
09 Dec - 23 Dec	easyJet
05 Dec - 21 Dec	Ryanair
03 Dec - 18 Dec	Ryanair
09 Dec - 24 Dec	easyJet
06 Dec - 15 Dec	Ryanair
10 Dec - 24 Dec	easyJet
04 Dec - 11 Dec	Ryanair
26 Dec - 31 Jan	Ryanair
29 Dec - 24 Jan	Ryanair
30 Dec - 15 Jan	Ryanair
30 Dec - 08 Jan	Ryanair
31 Dec - 17 Jan	Ryanair
05 Dec - 02 Jan	Ryanair
16 Dec - 10 Jan	Ryanair
13 Dec - 10 Jan	Ryanair
31 Dec - 15 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 $856

Return flights