Line 4: South Keys ⇄ Airport ~ Aéroport
Every 12 min
- AIRPORT O-TRAIN NORTH / AÉROPORT O-TRAIN NORD8 min sched.
- UPLANDS O-TRAIN NORTH / NORD0 min sched.
- SOUTH KEYS O-TRAIN NORTH / NORD3 min sched.
Where lateness is made ·
Not measured yet: too few weekdays with bus positions on this stretch.
The line right now · 11:17 a.m.
The line right now · 11:17 a.m.
Train positions are not published; next scheduled 11:17 a.m.
- AIRPORT O-TRAIN NORTH / AÉROPORT O-TRAIN NORD8 min sched.
- UPLANDS O-TRAIN NORTH / NORD0 min sched.
- SOUTH KEYS O-TRAIN NORTH / NORD3 min sched.
- SOUTH KEYS O-TRAIN SOUTH / SUD8 min sched.
- UPLANDS O-TRAIN SOUTH / SUD1 min sched.
- AIRPORT O-TRAIN NORTH / AÉROPORT O-TRAIN NORD3 min sched.
Stops and scheduled times from OC Transpo’s timetable (GTFS, 2026-10-30). Every time under a stop is from the timetable (sched.), not a prediction.
Right now on Route 4
0 noticesfrom OC Transpo
Planned change · 2026-10-30service change
More on Route 4
Planned change · 2026-10-30service change
Would you count on route 4?
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Cancellations on this route
How cancellations are counted2 partial-capture days not counted.
No counted cancellations on this route in the last four weeks. Notices we could not check would be listed below.
City road work near this route
All road work on AlertsRoad work and event closures the City of Ottawa has published, measured as near this route’s path. Near is not proof that the bus is detoured: check the operator’s alerts for that.
No City road work is listed near this route right now.
Source: City of Ottawa open data. City road work map
More on Route 4
- Other daysOctober 2026Days →
- Today’s timelineArchived bus positions in ReplayReplay →
- Road work on this routeStops moved and time added by road workWorks →
- Service change scorecardHow a service change didScorecard →
- Crowding and service deliverySTO crowding, rail, trips deliveredCrowding →
- Where the numbers come fromOC Transpo timetable and live bus positionsSources →
- Page not loading?The timetable still opensTry again
- Full report card
- Tell your councillor
- Fix this routePropose a change to this route in Design the networkFix this →
- Change this routeDraw a different route or timetable in Design the networkChange this route →
Explore the route
Choose a destination, then select a stop on the map or route diagram.
0 verified representative shapes · 5 stops
Dashed lines connect the published stop order; they are not claimed street paths
Map source and limits
A solid line matches one published representative trip whose stops and order were checked. Another trip with the same stops may follow a different shape. Dashed lines connect published stops only; they do not describe streets.
This view does not show live vehicle positions.
All published paths
Where does it go?
Different journeys can take different branches. Choose a published path above to see its stops in order.
You can also select any stop on the map to open its departure board.
Published stop order does not prove that a vehicle is running now.
Schedule and source records
AIRPORT O-TRAIN NORTH / AÉROPORT O-TRAIN NORD to SOUTH KEYS O-TRAIN NORTH / NORD · 3 stops
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday
3 official service records
0 added dates and 0 removed dates
Review the official service records
Service SEPT26-TRILLTP-Weekday-01
4-354
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Monday, Tuesday, Wednesday, Thursday, Friday
Service SEPT26-TRILSAT-Saturday-02
4-354
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Saturday
Service SEPT26-TRILSUN-Sunday-02
4-354
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Sunday
Service records for this stop pattern
Service SEPT26-TRILLTP-Weekday-01
4-354
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Monday, Tuesday, Wednesday, Thursday, Friday
Service SEPT26-TRILSAT-Saturday-02
4-354
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Saturday
Service SEPT26-TRILSUN-Sunday-02
4-354
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Sunday
UPLANDS O-TRAIN NORTH / NORD to SOUTH KEYS O-TRAIN NORTH / NORD · 2 stops
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday
3 official service records
0 added dates and 0 removed dates
Review the official service records
Service SEPT26-TRILLTP-Weekday-01
4-354
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Monday, Tuesday, Wednesday, Thursday, Friday
Service SEPT26-TRILSAT-Saturday-02
4-354
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Saturday
Service SEPT26-TRILSUN-Sunday-02
4-354
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Sunday
Service records for this stop pattern
Service SEPT26-TRILLTP-Weekday-01
4-354
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Monday, Tuesday, Wednesday, Thursday, Friday
Service SEPT26-TRILSAT-Saturday-02
4-354
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Saturday
Service SEPT26-TRILSUN-Sunday-02
4-354
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Sunday
SOUTH KEYS O-TRAIN SOUTH / SUD to AIRPORT O-TRAIN NORTH / AÉROPORT O-TRAIN NORD · 3 stops
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday
3 official service records
0 added dates and 0 removed dates
Review the official service records
Service SEPT26-TRILLTP-Weekday-01
4-354
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Monday, Tuesday, Wednesday, Thursday, Friday
Service SEPT26-TRILSAT-Saturday-02
4-354
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Saturday
Service SEPT26-TRILSUN-Sunday-02
4-354
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Sunday
Service records for this stop pattern
Service SEPT26-TRILLTP-Weekday-01
4-354
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Monday, Tuesday, Wednesday, Thursday, Friday
Service SEPT26-TRILSAT-Saturday-02
4-354
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Saturday
Service SEPT26-TRILSUN-Sunday-02
4-354
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Sunday
UPLANDS O-TRAIN SOUTH / SUD to AIRPORT O-TRAIN NORTH / AÉROPORT O-TRAIN NORD · 2 stops
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Monday, Tuesday, Wednesday, Thursday, Friday
1 official service record
0 added dates and 0 removed dates
Review the official service records
Service SEPT26-TRILLTP-Weekday-01
4-354
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Monday, Tuesday, Wednesday, Thursday, Friday
Service records for this stop pattern
Service SEPT26-TRILLTP-Weekday-01
4-354
Scheduled from Oct 30, 2026 to Nov 30, 2026
Published weekly days: Monday, Tuesday, Wednesday, Thursday, Friday
Official feed version 6ee8491d-8f94-4122-a67b-ef228d9e0945
Source checksum 91dd8e42516043447b7a3e7185d65557916494aaafeb36792fa1c09c514e2bbb