Cheapest return flights from Ottawa to London in May from $630

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

Return flights

15 May - 24 May Air Transat direct
15 May - 23 May Air Transat
14 May - 24 May Air Transat
03 May - 23 May Air Transat
18 May - 26 May Air Transat
02 May - 28 May Air Transat
20 May - 28 May Air Transat
18 May - 01 Jun WestJet
04 May - 11 May 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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