Cheapest return flights from Ottawa to London in May from $583

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

Return flights

22 May - 29 May Air Canada
24 May - 14 Jun Lufthansa
18 May - 01 Jun Air Canada
30 May - 10 Jun Air Canada
28 May - 10 Jun Air Canada
19 May - 25 May Air Canada
16 May - 24 May Air Canada
24 May - 15 Jun Air Canada
27 May - 05 Jun Lufthansa
28 May - 09 Jun Lufthansa
27 May - 09 Jun Lufthansa
15 May - 04 Jun Air Canada
13 May - 05 Jun Lufthansa
12 May - 26 May Lufthansa
05 May - 19 May Air Canada
15 May - 29 May Air Canada
05 May - 17 May Air Canada
05 May - 12 May Virgin Atlantic
04 May - 11 May Virgin Atlantic
16 May - 23 May Air Canada

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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