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

Return flights

02 Dec - 06 Dec	Ryanair
29 Dec - 24 Jan	Ryanair
05 Dec - 19 Dec	Jet2
02 Dec - 09 Dec	Ryanair
27 Dec - 17 Jan	Ryanair
27 Dec - 07 Jan	Ryanair
29 Dec - 22 Jan	Ryanair
30 Dec - 13 Jan	Ryanair
30 Dec - 24 Jan	Ryanair
02 Dec - 16 Dec	Ryanair
27 Dec - 24 Jan	Ryanair
02 Dec - 13 Dec	Ryanair
13 Dec - 27 Dec	Ryanair
18 Dec - 30 Dec	Ryanair
13 Dec - 25 Dec	Ryanair
19 Dec - 17 Jan	Ryanair
28 Dec - 25 Jan	Ryanair
30 Dec - 10 Jan	Ryanair
20 Dec - 26 Dec	Ryanair
07 Dec - 21 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 954€

Return flights