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

Return flights

30 Dec - 24 Jan	Lufthansa
29 Dec - 24 Jan	Lufthansa
02 Dec - 27 Dec	Lufthansa
03 Dec - 27 Dec	Lufthansa
15 Dec - 31 Dec	Air Canada
15 Dec - 10 Jan	United
16 Dec - 10 Jan	Iberia
15 Dec - 01 Jan	British Airways
20 Dec - 01 Jan	Aer Lingus
16 Dec - 06 Jan	Delta
19 Dec - 11 Jan	Icelandair
14 Dec - 03 Jan	TAP
19 Dec - 04 Jan	Icelandair

Also check the deals for one-way flights from Boston 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 Boston to Geneva in December from 364€

Return flights