Cheapest return flights from Ottawa to London in May from $557

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

Return flights

06 May - 16 May WestJet
15 May - 29 May Air Transat direct
15 May - 24 May Air Transat direct
22 May - 29 May Air Transat direct
15 May - 31 May Air Transat direct
25 May - 05 Jun Air Transat
31 May - 13 Jun Air Transat
14 May - 18 May Air Transat
23 May - 13 Jun Air Transat
20 May - 08 Jun WestJet
24 May - 04 Jun Air Transat
20 May - 27 May Air Transat
04 May - 11 Jun Air Transat
13 May - 21 May Air Transat
16 May - 20 May Air Transat
15 May - 23 May WestJet
19 May - 04 Jun WestJet
18 May - 01 Jun WestJet
20 May - 05 Jun WestJet

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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