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

Return flights

10 Dec - 16 Dec	Air Canada
09 Dec - 15 Dec	Air Canada
18 Dec - 25 Jan	Scandinavian Airlines
30 Dec - 24 Jan	TAP
24 Dec - 31 Dec	Iberia
19 Dec - 26 Dec	Air Canada
20 Dec - 01 Jan	Scandinavian Airlines
20 Dec - 27 Dec	Air Canada
26 Dec - 02 Jan	Air Canada
19 Dec - 04 Jan	jetBlue
19 Dec - 28 Dec	Air Canada

Also check the deals for one-way flights from Washington 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 Washington to Geneva in December from $591

Return flights