Cheapest one-way flights from Ottawa to London in June from $315

Best time to book flights for Ottawa (YOW) to London (LHR) flights at AirHint

AirHint found the following cheapest one-way flights from Ottawa (YOW) to London (LHR) in June 2025 (see full year).

One-Way flights

01 Jun WestJet
07 Jun WestJet
13 Jun WestJet
04 Jun WestJet
06 Jun Porter Airlines (Canada) Ltd
23 Jun Porter Airlines (Canada) Ltd
08 Jun Porter Airlines (Canada) Ltd
24 Jun Porter Airlines (Canada) Ltd
18 Jun Porter Airlines (Canada) Ltd
25 Jun Porter Airlines (Canada) Ltd

Also check the deals for return flights from Ottawa to London in June.

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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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