O-Train South
Meet your enhanced
O-Train South ride.
Line 2 | Line 4
Lines 2 and 4 will redefine your commute with fast, convenient connections across Ottawa. Launching on January 6, this extension serves 16 neighbourhoods and introduces 13 new and upgraded stations.
Enjoy modern, accessible stations with free bike parking, direct airport service, and enhanced neighbourhood connectivity.
Transfer easily at South Keys to reach the airport or continue downtown from Bayview Station on Line 1.
Starting January 6 with a Monday to Friday service, Lines 2& 4 will expand in 3 phases to a full seven-day schedule. To ensure a smooth transition, bus service will continue alongside the two lines.
O-Train south
Transfer stations
Lines 1 2 Connections
Bayview StationLines 2 4 Connections
South Keys StationYour step-by-step guide
Effortless transfers at South Keys
Watch this short, engaging video to easily transfer between Line 2 and Line 4 at South Keys Station.
Line 2
Bayview – Limebank
About Line 2
Line 2 covers 19 km from Bayview to Limebank, passing through 16 neighbourhoods and reaching about 23,000 residents daily. Key stops include Carleton University, Little Italy, and Mooney's Bay, with a 36-minute ride from downtown to Riverside South.
With eight new stations, and larger trains, Line 2's capacity will see a boost. Passing tracks at South Keys and double-track sections south of Leitrim improve operational flow and efficiency.
Service hours
Monday to Friday: 6 am — midnight
Saturday: 6:30 am — midnight (Service not available yet)
Sunday: 7:30 am — 11:30 pm (Service not available yet)
Parallel bus service will continue to run seven days a week.
Line 2 frequency
Monday to Friday: Approximately every 12 minutes
Parallel bus service
After the launch of Monday to Friday service, a parallel bus service will continue to run alongside Line 2.
Learn more about the Line 2 launch transitionLine 2 Line 2 routing
Explore the full Line 2 Route.
From Bayview to Limebank, see all stops along the way for a smoother, more informed travel experience.
Destinations
New places to discover
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SubscribeLine 4
Airport – South Keys
About Line 4
Introducing the newest addition to the O-Train network — Line 4.
New Line 4 bypasses city traffic, taking you to the airport. This new link will provide reliable and frequent service to a modern new station directly at the Departures level.
Line 4 connections with other lines in the network:
- Connect to Line 2 by transferring at South Keys Station
- Continue to Line 1 and downtown by transferring at Bayview Station
Service hours
Monday to Friday: 6 am — midnight
Saturday: 6:30 am — midnight (Service not available yet)
Sunday: 7:30 am — 11:30 pm (Service not available yet)
Parallel bus service will continue to run seven days a week.
Line 4 frequency
Monday to Friday: Approximately every 12 minutes
Parallel bus service
After the launch of Monday to Friday service, a parallel bus service will continue to run alongside Line 4.
Learn more about the Line 4 launch transitionLine 4 Line 4 routing
Explore the full Line 4 Route.
From Airport to South keys, see all stops along the way for a smoother, more informed travel experience.
Destinations
New places to discover