Cheapest one-way flights from Washington to Toronto in September from $77
AirHint found the following cheapest one-way flights from Washington (IAD) to Toronto (YTZ)
in September 2025 (see full year ).
One-Way flights
03 Sep
Porter Airlines (Canada) Ltd
$ 77
direct
04 Sep
Porter Airlines (Canada) Ltd
$ 78
direct
13 Sep
Porter Airlines (Canada) Ltd
$ 78
direct
25 Sep
Porter Airlines (Canada) Ltd
$ 80
direct
14 Sep
Porter Airlines (Canada) Ltd
$ 85
direct
19 Sep
Porter Airlines (Canada) Ltd
$ 86
direct
10 Sep
Porter Airlines (Canada) Ltd
$ 86
direct
23 Sep
Porter Airlines (Canada) Ltd
$ 89
direct
01 Sep
Porter Airlines (Canada) Ltd
$ 95
direct
Also check the deals for return flights from Washington to Toronto in September .
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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