Cheapest one-way flights from Ottawa to London in December from 227€

AirHint found the following cheapest one-way flights from Ottawa (YOW) to London (LHR) in December 2025 (see full year).

One-Way flights

07 Dec Porter Airlines (Canada) Ltd
03 Dec Porter Airlines (Canada) Ltd
05 Dec WestJet
25 Dec Porter Airlines (Canada) Ltd
09 Dec WestJet
26 Dec WestJet
19 Dec WestJet
03 Dec Air Canada direct
07 Dec Air Canada direct
05 Dec Air Canada direct

Also check the deals for return flights from Ottawa to London in December.

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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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