AirHint found the following cheapest return flights from Ottawa (YOW) to London (LGW) in January 2026 (see full year).

Return flights

30 Jan - 06 Feb	Air Transat
28 Jan - 10 Feb	Porter Airlines (Canada) Ltd
24 Jan - 29 Jan	Air Transat
25 Jan - 29 Jan	Air Transat
25 Jan - 07 Feb	Air Transat
26 Jan - 29 Jan	Porter Airlines (Canada) Ltd
22 Jan - 29 Jan	Air Transat
23 Jan - 29 Jan	Aer Lingus
23 Jan - 30 Jan	Porter Airlines (Canada) Ltd
18 Jan - 25 Jan	TAP

Also check the deals for one-way flights from Ottawa to London in January.

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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Cheapest return flights from Ottawa to London in January from 446€

Return flights