Cheapest one-way flights from Ottawa to London in March from $339

AirHint found the following cheapest one-way flights from Ottawa (YOW) to London (LHR) in March 2026 (see full year).

One-Way flights

22 Mar WestJet
23 Mar WestJet
18 Mar WestJet
01 Mar Porter Airlines (Canada) Ltd
05 Mar Porter Airlines (Canada) Ltd
06 Mar Porter Airlines (Canada) Ltd
13 Mar Porter Airlines (Canada) Ltd
04 Mar Air Canada direct
18 Mar Air Canada direct
06 Mar Air Canada direct

Also check the deals for return flights from Ottawa to London in March.

Powered by

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.

Book a cheap hotel in London

Cheap car rent in London

Feel free to contact us with any feedback or request another flight research.