How much does Ontario Line cost?
The Ontario Line is a new subway line in Toronto, Ontario, announced by the provincial government on 10 April 2019 and built by Metrolinx with a groundbreaking on 27 March 2022, whose opening has moved from as early as 2027 to the early 2030s, with the rolling-stock, systems and operations contract (Connect 6ix) projecting service in 2031. CP24 reported on 11 August 2026 that its cost had reached CAD 34 billion, more than triple the CAD 10.9 billion estimated in 2019, after a CAD 4.32 billion contract for three kilometres of tunnelling and two underground stations.
Published project estimate
CAD 34 billion
Approximately $24.32 billion
Cost basis: 2026
Dillan PayneCC BY-SA 2.0
Cost evidence
Basis of the published figure
Published project estimate2026
Project record