Welcome aboard Lines 2 & 4

Updated on February 6, 2025

Six-day
service starts January 25

Connecting Ottawa South

Lines 2 & 4 are expanding the O-Train south, from Bayview station to Limebank and Airport station. These new lines connect Little Italy to Riverside South, with frequent departures to Carleton University and the Ottawa International Airport.

Get ready
For the Lines Line 2 icon & Line 4 icon:
Weekdays + Saturday

We understand that transitioning to a new service can be challenging, especially when it comes to your commute.

Since the launch of weekday service on January 6, O-Train Lines 2 and 4 have demonstrated safe and consistent performance.

January 25, marks the start of Lines 2& 4six-day service, now running Monday to Saturday.

Starting February 10:

  • B2, the parallel bus service for Line 2, will run less frequently from Monday to Saturday, with service approximately twice an hour throughout the day.
  • On Sundays, B2 will continue to run every 15 minutes
  • This will allow customers the flexibility to continue using the bus while they transition to the new train lines.
Two passengers sitting aboard the FLRT train, smiling at each other.
Six-Day service started January 25

Lines 2 4
Phased opening

Lessons learned and insights from the Public Inquiry report have shaped the phased opening of Lines 2 and 4. Organized into three phases, this approach helps customers get familiar with the service while supporting staff training.

The first phase, a five-days-a-week service (Monday to Friday), launched on January 6. 

On January 25, service expanded to six-day service (Monday to Saturday). 

An update on the next steps of the phased opening will be provided soon. 

Here's an overview of the three phases:

Phase 1

5-day service

Launched Jan 6

Phase 2

6-day service

Launched Jan 25

Phase 3

Full week service

Future service

Why a phased opening?

A phased opening allows staff to monitor the system closely, identify potential issues, and address them before expanding the service. This approach ensures system safety and reliability. It also ensures an optimal customer experience.  

To ensure a smooth transition, bus service will continue alongside the two Lines.

Stay tuned for updates !

See the full memo

Bus service during the transition period

Drawing from experience, we’ve designed a plan to support you and ease your transition to the O-Train. Parallel bus service will continue after Lines 2 4open.

  • This service is designed to provide transportation options as you get accustomed to the new train system.
  • Transition bus service will continue to run alongside the Lines 2 & 4, including for a period of time after seven-day service begins.

What to expect?

Bayview - South Keys

Line 2 bus service will continue to run between Bayview and South Keys stations, under a new name: B2.
B2 bus service will serve the same station stops as before.

97Rapid Route

Ottawa Airport

Route 97 will continue to run to the Airport, providing service alongside Line 4 between South Keys and the Airport.

99Rapid Route

Leitrim

Route 99 will continue to run its current route in the south.

This will provide bus service alongside Line 2 in the south, and will make connections at Walkley, Greenboro, South Keys and Leitrim Stations.

74, 198, 278, and 406

will connect to Limebank Station.

Transition period map

Parallel bus service map after the launch of Lines 2 & 4
Click on the map to open the PDF

Bus network changes coming in April 2025

The New Ways to Bus network is planned to come into effect in April 2025, opening up new convenient connections across the city.

What you need to know :

Bus route changes Routes not changing Updated Bus Network map