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

Return flights

17 Jul - 19 Jul	Air Transat
24 Jul - 23 Aug	WestJet
08 Jul - 29 Jul	Air Transat
13 Jul - 27 Jul	Air Transat
01 Jul - 21 Jul	WestJet
09 Jul - 31 Jul	WestJet
10 Jul - 18 Jul	Air Transat
24 Jul - 23 Aug	Air Transat	direct
17 Jul - 19 Jul	Air Transat	direct
02 Jul - 06 Jul	WestJet
02 Jul - 06 Aug	Condor

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 762€

Return flights