AirHint found the following cheapest return flights from Geneva (GVA) to St.-denis (RUN) in December 2025 (see full year).

Return flights

01 Dec - 04 Dec	easyJet
31 Dec - 31 Jan	easyJet
05 Dec - 18 Jan	easyJet
29 Dec - 16 Jan	easyJet
08 Dec - 16 Dec	easyJet
29 Dec - 14 Jan	easyJet
29 Dec - 12 Jan	SWISS
10 Dec - 23 Dec	easyJet
23 Dec - 27 Dec	easyJet
24 Dec - 13 Jan	KLM
23 Dec - 13 Jan	SWISS
15 Dec - 30 Dec	easyJet
26 Dec - 17 Jan	easyJet
23 Dec - 12 Jan	SWISS
15 Dec - 31 Dec	easyJet
23 Dec - 11 Jan	SWISS
16 Dec - 29 Dec	Lufthansa
20 Dec - 28 Dec	Jet2
22 Dec - 29 Dec	easyJet
22 Dec - 31 Dec	easyJet

Also check the deals for one-way flights from Geneva to St.-denis 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 Geneva to St.-denis in December from 572€

Return flights