Cheapest one-way flights from Ottawa to London in May from $318

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

One-Way flights

24 May WestJet
25 May WestJet
26 May WestJet
27 May WestJet
17 May WestJet
24 May Air Transat 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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