Cheapest return flights from Washington to Toronto in October from $423

Best time to book flights for Washington (IAD) to Toronto (YTZ) flights at AirHint

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

Return flights

12 Oct - 31 Oct Porter Airlines (Canada) Ltd direct
11 Oct - 31 Oct Porter Airlines (Canada) Ltd direct
10 Oct - 31 Oct Porter Airlines (Canada) Ltd direct
12 Oct - 17 Oct Porter Airlines (Canada) Ltd direct
12 Oct - 18 Oct Porter Airlines (Canada) Ltd direct
10 Oct - 17 Oct Porter Airlines (Canada) Ltd direct
11 Oct - 18 Oct Porter Airlines (Canada) Ltd direct
10 Oct - 18 Oct Porter Airlines (Canada) Ltd direct
11 Oct - 17 Oct Porter Airlines (Canada) Ltd direct

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

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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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