Cheapest one-way flights from Ottawa to London in May from $370

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 May 2025 (see full year).

One-Way flights

09 May Porter Airlines (Canada) Ltd
10 May Porter Airlines (Canada) Ltd
05 May Porter Airlines (Canada) Ltd
24 May WestJet
21 May WestJet
22 May WestJet
18 May WestJet
26 May WestJet
23 May WestJet
05 May Lufthansa direct

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

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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