Cheapest one-way flights from Ottawa to London in May from $406

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

10 May Air Transat
17 May Air Transat
17 May Air Canada direct
10 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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