AirHint found the following cheapest return flights from Southampton (SOU) to Geneva (GVA) in December 2025 (see full year).

Return flights

11 Dec - 18 Dec	easyJet	direct
14 Dec - 18 Dec	easyJet	direct
18 Dec - 20 Dec	easyJet	direct
13 Dec - 20 Dec	easyJet	direct
18 Dec - 21 Dec	easyJet	direct
20 Dec - 27 Dec	easyJet	direct
11 Dec - 15 Dec	easyJet
13 Dec - 21 Dec	easyJet	direct
12 Dec - 15 Dec	easyJet
20 Dec - 21 Dec	easyJet	direct
30 Dec - 06 Jan	KLM
28 Dec - 01 Jan	KLM
28 Dec - 01 Jan	easyJet	direct
29 Dec - 03 Jan	KLM
27 Dec - 01 Jan	KLM
30 Dec - 03 Jan	KLM
28 Dec - 03 Jan	KLM
28 Dec - 03 Jan	easyJet	direct
27 Dec - 01 Jan	easyJet	direct
27 Dec - 02 Jan	KLM

Also check the deals for one-way flights from Southampton to Geneva 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 Southampton to Geneva in December from 100€

Return flights