Cheapest return flights from Ottawa to London in August from $711

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

23 Aug - 01 Sep Air Canada
22 Aug - 01 Sep Air Canada
02 Aug - 21 Aug Lufthansa direct
01 Aug - 15 Aug Air Canada
16 Aug - 31 Aug Air Canada
11 Aug - 21 Aug Air Canada
13 Aug - 27 Aug Lufthansa
01 Aug - 11 Aug Air Canada
28 Aug - 04 Sep Air Canada direct
27 Aug - 10 Sep Lufthansa
18 Aug - 28 Aug Lufthansa direct
20 Aug - 27 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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