Cheapest return flights from Ottawa to London in May from 451€

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

Return flights

20 May - 02 Jun WestJet
20 May - 27 May WestJet
20 May - 08 Jun WestJet
23 May - 31 May Air Transat
28 May - 02 Jun Air Transat
15 May - 29 May Air Transat direct
22 May - 29 May Air Transat direct
22 May - 27 May WestJet
04 May - 11 May Porter Airlines (Canada) Ltd
22 May - 06 Jun Air Transat
26 May - 07 Jun Air Transat
18 May - 24 May Air Transat
07 May - 12 May Air Transat
21 May - 06 Jun Air Transat
15 May - 22 May Air Transat direct
06 May - 18 May Air Transat
22 May - 11 Jun Air Transat
22 May - 22 Jun Air France

Also check the deals for one-way 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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