Ontario Line

Ontario Line
Construction near Gerrard station site in April 2026
Overview
Status	Under construction
Owner	Metrolinx
Locale	Toronto, Ontario
Termini	Don Valley Exhibition
Stations	15
Service
Type	Rapid transit
System	Toronto subway
Rolling stock	Hitachi Rail
History
Planned opening	2032 (2032)
Technical
Line length	15.6 km (9.7 mi)
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge
Electrification	Overhead line, 1,500 V DC
Operating speed	80 km/h (50 mph)
Route map Don Valley Flemingdon Park West Don River Maintenance and storage facility Thorncliffe Park Don River Don Valley Parkway Cosburn Pape Lakeshore East & Stouffville lines Gerrard Leslieville East Harbour Don Valley Parkway Don River Richmond Hill line Distillery District Moss Park Queen Osgoode Chinatown King West Milton, Kitchener, and Barrie lines Exhibition Lakeshore West line All stations are accessible

The Ontario Line is a rapid transit line under construction in Toronto, Ontario, Canada. Fifteen new stations will be built along its 15.6-kilometre (9.7 mi) length, six of them connecting to other transit lines. Its northern terminus will be at Eglinton Avenue and Don Mills Road, at Don Valley station, where it will connect with Line 5 Eglinton. Its southern terminus will be at the existing Exhibition GO Station on the Lakeshore West line.

The Ontario Line was announced by the Government of Ontario on April 10, 2019. Initially estimated to cost CA$10.9 billion with completion by 2027, the line was estimated in 2026 to cost around $34 billion with an estimated opening date in the early 2030s. A groundbreaking ceremony for the project took place on March 27, 2022. On April 20, 2026, tunnelling began using two tunnel boring machines.

Upon opening, the plan is for the line to be designated Line 3. This identifier was used by Line 3 Scarborough until its closure in July 2023.