Cheapest return flights from Ottawa to London in August from $875

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

01 Aug - 13 Aug Air Canada
02 Aug - 13 Aug Air Canada direct
06 Aug - 11 Sep Air Canada direct
15 Aug - 06 Sep Air Canada
02 Aug - 14 Aug Air Canada direct

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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