The 73 Royal York bus route operates between Royal York Station on the Bloor-Danforth Subway, the area of Royal York Road and Dixon Road, and the area of Albion Road and Claireport Drive, generally in a north-south direction. Bike racks are available on this route.

Three services are operated. The 73C (Royal York Stn-Claireport via Albion Rd) is the main branch, and operates at all times, seven days a week. The 73A (Royal York Stn-Dixon Rd) short-turn branch operates during the peak periods from Monday to Friday. The 73B (Royal York Stn-Eglinton & LaRose Ave) short-turn branch operates during the peak periods and midday from Monday to Friday, and during the daytime on Saturdays, Sundays, and holidays.

Northbound 73A TO DIXON RD

These buses operate from Royal York Station via north on Royal York Road, and east on Dixon Road to Roxaline Street.

Southbound 73A TO ROYAL YORK STN

These buses operate from Dixon Road and Roxaline Street via south on Roxaline Street, west on Royaleigh Avenue, and south on Royal York Road to Royal York Station.

Northbound 73B TO EGLINTON AND LA ROSE

These buses operate from Royal York Station via north on Royal York Road, and east on LaRose Avenue to Scarlett Road.

Southbound 73B TO ROYAL YORK STN

These buses operate from LaRose Avenue and Scarlett Road via south on Scarlett Road, west on Eglinton Avenue West, and south on Royal York Road to Royal York Station.

Northbound 73C TO CLAIREPORT VIA ALBION RD

These buses operate from Royal York Station via north on Royal York Road, northeast on St. Phillips Road, north on Weston Road, northwest on Albion Road (past Humberline Loop) to Claireport Crescent (east branch), and then looping clockwise via south, west and north on Claireport Crescent to Albion Road.

Southbound 73C TO ROYAL YORK STN

These buses operate from Claireport Crescent (west branch) and Albion Road via southeast on Albion Road (past Humberline Loop), south on Weston Road, southwest on St. Phillips Road, and south on Royal York Road to Royal York Station.

All buses on the route serve local bus stops along the route.