Cheapest return flights from Washington to Toronto in December from $191

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

Return flights

05 Dec - 07 Dec Porter Airlines (Canada) Ltd direct
05 Dec - 25 Dec Porter Airlines (Canada) Ltd direct
26 Dec - 29 Dec Porter Airlines (Canada) Ltd direct
16 Dec - 25 Dec Porter Airlines (Canada) Ltd direct
17 Dec - 25 Dec Porter Airlines (Canada) Ltd direct
16 Dec - 29 Dec Porter Airlines (Canada) Ltd direct
17 Dec - 29 Dec Porter Airlines (Canada) Ltd direct

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

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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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