The cost of the Ontario Line transit project has more than tripled since it was first announced seven years ago and the final price tag could be even more, Metrolinx's CEO says. But that's climbed to around $34 billion, Metrolinx CEO Michael Lindsay confirmed to reporters at a news conference Tuesday. Advertisement AdvertisementAdvertisement AdvertisementThe 15.6-kilometre rapid transit line will have above-ground and underground sections, and is planned to run between 15 Toronto stations and more than 40 transit connections. At first, the Ontario Line was expected to be completed by 2027. As recently as June, the baseline price tag for the Ontario Line was roughly $29.8 billion, according to a Metrolinx report.