Cheapest return flights from Ottawa to London in August from $738

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

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

Return flights

11 Aug - 28 Aug Lufthansa direct
13 Aug - 28 Aug Air Canada
15 Aug - 30 Aug Air Canada
06 Aug - 16 Aug Air Canada direct
13 Aug - 27 Aug Lufthansa
03 Aug - 22 Aug Air Canada
14 Aug - 20 Aug Air Canada
20 Aug - 01 Sep Air Canada
21 Aug - 30 Aug Air Canada
05 Aug - 12 Aug Air Canada
05 Aug - 22 Aug Air Canada

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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