Cheapest return flights from Ottawa to London in August from $773

AirHint found the following cheapest return flights from Ottawa (YOW) to London (LGW) in August 2026 (see full year).

Return flights

14 Aug - 12 Sep Air Transat
28 Aug - 19 Sep Air Transat
17 Aug - 30 Aug WestJet
20 Aug - 02 Sep WestJet
15 Aug - 12 Sep Air Transat
29 Aug - 19 Sep WestJet

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

Powered by

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.

Book a cheap hotel in London

Cheap car rent in London

Feel free to contact us with any feedback or request another flight research.