AirHint found the following cheapest one-way flights from Ottawa (YOW) to Delhi (DEL) in September 2025 (see full year).

One-Way flights

24 Sep	Porter Airlines (Canada) Ltd
20 Sep	Porter Airlines (Canada) Ltd
19 Sep	Porter Airlines (Canada) Ltd
21 Sep	Porter Airlines (Canada) Ltd
18 Sep	Porter Airlines (Canada) Ltd
17 Sep	Air Canada
27 Sep	Porter Airlines (Canada) Ltd
28 Sep	Air Canada
26 Sep	Air Canada

Also check the deals for return flights from Ottawa to Delhi 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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Cheapest one-way flights from Ottawa to Delhi in September from $608

One-Way flights