Cheapest return flights from Ottawa to London in May from 727€

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

AirHint found the following cheapest return flights from Ottawa (YOW) to London (LHR) in May 2025 (see full year).

Return flights

28 May - 04 Jun Air Canada direct
12 May - 26 May Air Canada direct
01 May - 12 May Air Canada direct
16 May - 20 May Air Canada
27 May - 10 Jun Lufthansa

Also check the deals for one-way 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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