Cheapest one-way flights from Ottawa to London in May from $416

AirHint found the following cheapest one-way flights from Ottawa (YOW) to London (LHR) in May 2026 (see full year).

One-Way flights

01 May Porter Airlines (Canada) Ltd
11 May WestJet
10 May Porter Airlines (Canada) Ltd
11 May Air Canada 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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