Cheapest return flights from Washington to Toronto in October from $187

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

Return flights

23 Oct - 29 Oct Porter Airlines (Canada) Ltd direct
03 Oct - 05 Oct Porter Airlines (Canada) Ltd direct
30 Oct - 05 Nov Porter Airlines (Canada) Ltd direct
20 Oct - 03 Nov Porter Airlines (Canada) Ltd direct
02 Oct - 04 Oct Porter Airlines (Canada) Ltd direct
04 Oct - 06 Oct Porter Airlines (Canada) Ltd direct
24 Oct - 26 Oct Porter Airlines (Canada) Ltd direct
17 Oct - 20 Oct Porter Airlines (Canada) Ltd direct
12 Oct - 18 Oct Porter Airlines (Canada) Ltd direct
05 Oct - 18 Oct Porter Airlines (Canada) Ltd direct
05 Oct - 19 Oct Porter Airlines (Canada) Ltd direct
05 Oct - 17 Oct Porter Airlines (Canada) Ltd direct
20 Oct - 05 Nov Porter Airlines (Canada) Ltd direct
20 Oct - 06 Nov Porter Airlines (Canada) Ltd direct
23 Oct - 05 Nov Porter Airlines (Canada) Ltd direct
23 Oct - 06 Nov Porter Airlines (Canada) Ltd direct
31 Oct - 05 Nov Porter Airlines (Canada) Ltd direct
31 Oct - 06 Nov Porter Airlines (Canada) Ltd direct
24 Oct - 05 Nov Porter Airlines (Canada) Ltd direct
24 Oct - 06 Nov 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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