Cheapest one-way flights from Washington to Toronto in October from $78

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

One-Way flights

19 Oct Porter Airlines (Canada) Ltd direct
07 Oct Porter Airlines (Canada) Ltd direct
06 Oct Porter Airlines (Canada) Ltd direct
12 Oct Porter Airlines (Canada) Ltd direct
10 Oct Porter Airlines (Canada) Ltd direct
29 Oct Porter Airlines (Canada) Ltd direct
30 Oct Porter Airlines (Canada) Ltd direct
23 Oct Porter Airlines (Canada) Ltd direct
03 Oct Porter Airlines (Canada) Ltd direct
24 Oct Porter Airlines (Canada) Ltd direct

Also check the deals for return flights from Washington to Toronto in October.

Skyscanner

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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