Cheapest return flights from Ottawa to London in October from $594

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

Return flights

08 Oct - 01 Nov Porter Airlines (Canada) Ltd
12 Oct - 01 Nov Porter Airlines (Canada) Ltd
11 Oct - 01 Nov Porter Airlines (Canada) Ltd
07 Oct - 01 Nov Porter Airlines (Canada) Ltd
06 Oct - 11 Oct Air Transat
07 Oct - 11 Oct Air Transat
15 Oct - 08 Nov Air Canada
25 Oct - 31 Oct Air Transat
20 Oct - 15 Nov Porter Airlines (Canada) Ltd
22 Oct - 15 Nov Porter Airlines (Canada) Ltd
11 Oct - 18 Oct Porter Airlines (Canada) Ltd
06 Oct - 01 Nov WestJet
19 Oct - 08 Nov Air Transat
21 Oct - 15 Nov Air Transat
25 Oct - 30 Oct Air Transat
07 Oct - 15 Oct Air Transat
14 Oct - 18 Oct Air Transat
22 Oct - 24 Oct WestJet
16 Oct - 20 Oct Air Transat
09 Oct - 18 Oct WestJet

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

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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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