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

Return flights

08 Jul - 29 Jul	Air Canada	direct
08 Jul - 27 Jul	Lufthansa
04 Jul - 15 Jul	Lufthansa	direct
07 Jul - 23 Jul	Air Canada
08 Jul - 23 Jul	Air Canada	direct
10 Jul - 29 Jul	Air Canada
02 Jul - 06 Aug	Lufthansa	direct

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

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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Cheapest return flights from Ottawa to London in July from $947

Return flights