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

Return flights

03 Dec - 10 Dec	Scandinavian Airlines
04 Dec - 11 Dec	Scandinavian Airlines
31 Dec - 11 Jan	TAP
02 Dec - 03 Dec	TAP
05 Dec - 07 Dec	Royal Air Maroc
03 Dec - 04 Dec	Turkish Airlines
15 Dec - 28 Dec	Frontier Airlines
31 Dec - 11 Jan	Brussels Airlines	direct
28 Dec - 05 Jan	TAP
26 Dec - 05 Jan	Frontier Airlines
27 Dec - 05 Jan	Lufthansa
26 Dec - 04 Jan	Frontier Airlines
27 Dec - 04 Jan	Lufthansa
25 Dec - 04 Jan	Lufthansa
04 Dec - 11 Dec	Brussels Airlines	direct
05 Dec - 07 Dec	Brussels Airlines	direct
15 Dec - 31 Dec	Delta
20 Dec - 03 Jan	Frontier Airlines
15 Dec - 03 Jan	TAP

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.

Book a cheap hotel in Geneva

Cheap car rent in Geneva

Cheapest return flights from Washington to Geneva in December from 634€

Return flights