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Cheapest return flights from Ottawa (YOW) to Lisbon (LIS), September

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Dates, airline, and price
Dates	Airline	Price
08 Sep 18 Sep	Air Canada
21 Sep 05 Oct	Air Canada
21 Sep 27 Sep	Air Canada
17 Sep 30 Sep	Air Canada
25 Sep 03 Oct	Air Transat
18 Sep 11 Oct	Air Canada

deals for one-way flights from Ottawa to Lisbon in September.

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Updated May 26, 2026.

About these fares

These results come from our latest search across airlines for your currency. Prices change quickly and are not locked until you complete booking—always confirm the total and fare rules on the partner site.

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Cheapest return flights from Ottawa (YOW) to Lisbon (LIS), September

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