Cheapest return flights from Washington (IAD) to Toronto (YTZ), September

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
03 Sep 07 Sep Porter Airlines (Canada) Ltd
Direct Flight
04 Sep 06 Sep Porter Airlines (Canada) Ltd
Direct Flight
03 Sep 08 Sep Porter Airlines (Canada) Ltd
Direct Flight
03 Sep 05 Sep Porter Airlines (Canada) Ltd
Direct Flight
06 Sep 07 Sep Porter Airlines (Canada) Ltd
Direct Flight
02 Sep 06 Sep Porter Airlines (Canada) Ltd
Direct Flight
05 Sep 18 Sep Porter Airlines (Canada) Ltd
Direct Flight
05 Sep 21 Sep Porter Airlines (Canada) Ltd
Direct Flight
05 Sep 17 Sep Porter Airlines (Canada) Ltd
Direct Flight
05 Sep 19 Sep Porter Airlines (Canada) Ltd
Direct Flight
27 Sep 08 Oct Porter Airlines (Canada) Ltd
Direct Flight
20 Sep 02 Oct Porter Airlines (Canada) Ltd
Direct Flight
20 Sep 03 Oct Porter Airlines (Canada) Ltd
Direct Flight
21 Sep 02 Oct Porter Airlines (Canada) Ltd
Direct Flight
21 Sep 03 Oct Porter Airlines (Canada) Ltd
Direct Flight
24 Sep 02 Oct Porter Airlines (Canada) Ltd
Direct Flight
24 Sep 03 Oct Porter Airlines (Canada) Ltd
Direct Flight
22 Sep 02 Oct Porter Airlines (Canada) Ltd
Direct Flight
22 Sep 03 Oct Porter Airlines (Canada) Ltd
Direct Flight
25 Sep 02 Oct Porter Airlines (Canada) Ltd
Direct Flight
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deals for one-way flights from Washington to Toronto in September.

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Updated Jun 25, 2026.

About these fares

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