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

One-Way flights

21 Sep	Porter Airlines (Canada) Ltd
09 Sep	Porter Airlines (Canada) Ltd
04 Sep	Porter Airlines (Canada) Ltd
23 Sep	Porter Airlines (Canada) Ltd
11 Sep	Porter Airlines (Canada) Ltd
27 Sep	Porter Airlines (Canada) Ltd
22 Sep	Air Canada
24 Sep	Air Canada
26 Sep	Air Canada
15 Sep	Porter Airlines (Canada) Ltd

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 $499

One-Way flights