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

Return flights

03 Dec - 10 Dec	easyJet
16 Dec - 25 Jan	Ryanair
05 Dec - 10 Dec	Ryanair
04 Dec - 07 Dec	Ryanair
16 Dec - 27 Jan	Ryanair
04 Dec - 10 Dec	Ryanair
03 Dec - 07 Dec	Ryanair
06 Dec - 16 Dec	Ryanair
03 Dec - 09 Dec	Ryanair
13 Dec - 13 Jan	Ryanair
01 Dec - 08 Dec	easyJet
09 Dec - 24 Dec	Ryanair
10 Dec - 21 Jan	Ryanair
04 Dec - 09 Dec	Ryanair
28 Dec - 18 Jan	Ryanair
14 Dec - 14 Jan	Ryanair
06 Dec - 13 Jan	Ryanair
05 Dec - 19 Jan	Ryanair
30 Dec - 31 Jan	Ryanair
18 Dec - 27 Jan	Ryanair

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 731€

Return flights