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

Return flights

03 Dec - 09 Dec	Frontier Airlines
09 Dec - 05 Jan	Frontier Airlines
10 Dec - 07 Jan	Frontier Airlines
02 Dec - 09 Dec	Porter Airlines (Canada) Ltd
09 Dec - 16 Dec	United
10 Dec - 04 Jan	Frontier Airlines
09 Dec - 29 Dec	Frontier Airlines
09 Dec - 21 Dec	United
23 Dec - 28 Dec	Delta
19 Dec - 25 Dec	Frontier Airlines
21 Dec - 26 Dec	United
20 Dec - 25 Dec	United
23 Dec - 02 Jan	Alaska Airlines
20 Dec - 26 Dec	Frontier Airlines
28 Dec - 04 Jan	Alaska Airlines
20 Dec - 02 Jan	Frontier Airlines

Also check the deals for one-way flights from Washington to Vancouver 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 Vancouver in December from 171€

Return flights