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

Return flights

02 Dec - 07 Dec	easyJet
31 Dec - 31 Jan	easyJet
08 Dec - 14 Dec	easyJet
01 Dec - 14 Dec	easyJet
29 Dec - 16 Jan	SWISS
29 Dec - 12 Jan	SWISS
08 Dec - 22 Dec	easyJet
16 Dec - 29 Dec	easyJet
15 Dec - 31 Dec	easyJet
26 Dec - 17 Jan	easyJet
11 Dec - 18 Dec	easyJet
26 Dec - 19 Jan	easyJet
15 Dec - 30 Dec	easyJet
22 Dec - 29 Dec	easyJet
24 Dec - 13 Jan	KLM
29 Dec - 09 Jan	SWISS
23 Dec - 12 Jan	SWISS
23 Dec - 13 Jan	KLM
25 Dec - 10 Jan	easyJet
21 Dec - 30 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 $650

Return flights