Cheapest one-way flights from Ottawa to London in September from 356€

Best time to book flights for Ottawa (YOW) to London (LHR) flights at AirHint

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

One-Way flights

27 Sep Porter Airlines (Canada) Ltd
30 Sep Porter Airlines (Canada) Ltd
20 Sep WestJet
06 Sep WestJet
24 Sep WestJet
24 Sep Air Canada direct
20 Sep Air Canada direct
06 Sep Air Canada direct

Also check the deals for return flights from Ottawa to London in September.

Skyscanner

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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