Cheapest return flights from Ottawa to London in August from $742

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

AirHint found the following cheapest return flights from Ottawa (YOW) to London (LGW) in August 2025 (see full year).

Return flights

06 Aug - 19 Aug Porter Airlines (Canada) Ltd
20 Aug - 08 Sep Porter Airlines (Canada) Ltd
18 Aug - 06 Sep Porter Airlines (Canada) Ltd
19 Aug - 06 Sep Porter Airlines (Canada) Ltd
18 Aug - 07 Sep Porter Airlines (Canada) Ltd
02 Aug - 25 Aug Air Transat
27 Aug - 10 Sep Air Transat
07 Aug - 20 Aug Porter Airlines (Canada) Ltd
19 Aug - 07 Sep Air Transat
18 Aug - 01 Sep Air Transat
21 Aug - 08 Sep Porter Airlines (Canada) Ltd
21 Aug - 10 Sep Porter Airlines (Canada) Ltd
21 Aug - 26 Aug Porter Airlines (Canada) Ltd
01 Aug - 07 Aug Porter Airlines (Canada) Ltd
21 Aug - 01 Sep Porter Airlines (Canada) Ltd
01 Aug - 15 Aug Air Transat
02 Aug - 07 Aug Air Transat
17 Aug - 31 Aug Air Transat
16 Aug - 31 Aug Porter Airlines (Canada) Ltd
16 Aug - 21 Aug Porter Airlines (Canada) Ltd

Also check the deals for one-way flights from Ottawa to London in August.

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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