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

Return flights

25 Dec - 30 Dec	jetBlue
25 Dec - 28 Dec	jetBlue
08 Dec - 15 Dec	Air Canada
25 Dec - 04 Jan	WestJet
30 Dec - 04 Jan	WestJet
25 Dec - 29 Dec	WestJet
25 Dec - 27 Dec	WestJet
29 Dec - 01 Jan	WestJet
13 Dec - 15 Dec	WestJet
26 Dec - 27 Dec	WestJet
30 Dec - 01 Jan	WestJet
29 Dec - 02 Jan	WestJet
14 Dec - 16 Dec	WestJet
23 Dec - 03 Jan	WestJet
12 Dec - 13 Dec	WestJet
24 Dec - 03 Jan	WestJet
30 Dec - 03 Jan	WestJet
08 Dec - 12 Dec	WestJet

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 424€

Return flights