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

Return flights

02 Dec - 09 Dec	United
06 Dec - 13 Dec	United
03 Dec - 10 Dec	United
07 Dec - 14 Dec	United
09 Dec - 16 Dec	United
10 Dec - 17 Dec	United
17 Dec - 24 Dec	United
31 Dec - 07 Jan	United
12 Dec - 15 Dec	United
24 Dec - 31 Dec	United
08 Dec - 15 Dec	United
30 Dec - 06 Jan	United
29 Dec - 05 Jan	United
27 Dec - 03 Jan	WestJet
25 Dec - 01 Jan	WestJet
26 Dec - 02 Jan	WestJet
28 Dec - 04 Jan	WestJet

Also check the deals for one-way flights from Washington to Calgary 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 Calgary in December from 187€

Return flights