AirHint found the following cheapest one-way flights from Ottawa (YOW) to London (LHR) in May 2026 (see full year).
One-Way flights
| 23 May | WestJet | ||
| 06 May | Porter Airlines (Canada) Ltd | ||
| 22 May | WestJet | ||
| 31 May | WestJet | ||
| 15 May | TAP | ||
| 06 May | Air Canada | direct | |
| 23 May | Lufthansa | direct | |
| 09 May | Air Canada | direct |
Also check the deals for return flights from Ottawa to London in May.
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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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