Cheapest one-way flights from Washington to Toronto in September from $82

AirHint found the following cheapest one-way flights from Washington (DCA) to Toronto (YYZ) in September 2025 (see full year).

One-Way flights

21 Sep Air Canada direct
25 Sep Air Canada direct
06 Sep Delta
24 Sep Delta
27 Sep Delta
06 Sep Air Canada direct
24 Sep Air Canada direct
19 Sep Air Canada direct
15 Sep Air Canada direct
27 Sep Air Canada direct

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

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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