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

Return flights

12 Dec - 16 Dec	Air Canada	direct
06 Dec - 07 Dec	Air Canada	direct
15 Dec - 18 Dec	Air Canada	direct
16 Dec - 25 Dec	Air Canada	direct
16 Dec - 22 Dec	Air Canada	direct
08 Dec - 19 Dec	Air Canada	direct
29 Dec - 05 Jan	WestJet
28 Dec - 02 Jan	WestJet
29 Dec - 31 Dec	WestJet
23 Dec - 25 Dec	WestJet
23 Dec - 27 Dec	WestJet
20 Dec - 28 Dec	Air Canada	direct
29 Dec - 05 Jan	Air Canada	direct
28 Dec - 02 Jan	Air Canada	direct

Also check the deals for one-way flights from Washington to Toronto 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 Toronto in December from 192€

Return flights