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

Return flights

08 Dec - 10 Dec	Frontier Airlines
05 Dec - 07 Dec	Frontier Airlines
12 Dec - 14 Dec	Frontier Airlines
09 Dec - 13 Dec	Frontier Airlines
03 Dec - 05 Dec	Frontier Airlines
14 Dec - 21 Dec	Frontier Airlines
06 Dec - 08 Dec	Delta
07 Dec - 08 Dec	Delta
23 Dec - 28 Dec	Frontier Airlines
28 Dec - 04 Jan	Frontier Airlines
20 Dec - 28 Dec	Frontier Airlines
25 Dec - 03 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 $265

Return flights