Cheapest return flights from Ottawa to London in August from $682

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

Return flights

25 Aug - 08 Sep WestJet
13 Aug - 28 Aug Air Transat
11 Aug - 11 Sep Air Transat
14 Aug - 27 Aug Air Transat
07 Aug - 27 Aug Air Transat
25 Aug - 03 Sep Porter Airlines (Canada) Ltd
10 Aug - 03 Sep Air Transat
23 Aug - 08 Sep Porter Airlines (Canada) Ltd
03 Aug - 18 Aug Air Transat
10 Aug - 18 Aug Air Transat
27 Aug - 30 Aug Porter Airlines (Canada) Ltd
11 Aug - 04 Sep Porter Airlines (Canada) Ltd
27 Aug - 01 Sep Porter Airlines (Canada) Ltd
28 Aug - 01 Sep Porter Airlines (Canada) Ltd
13 Aug - 25 Aug Porter Airlines (Canada) Ltd
12 Aug - 22 Aug Porter Airlines (Canada) Ltd
14 Aug - 22 Aug Porter Airlines (Canada) Ltd
06 Aug - 21 Aug Porter Airlines (Canada) Ltd
30 Aug - 14 Sep WestJet
20 Aug - 08 Sep Air Transat

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

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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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