The 504 King streetcar route operates between Dundas West Station and Broadview Station on the Bloor-Danforth Subway, generally in an east-west direction.  It also serves the St. Andrew and King Stations on the Yonge-University-Spadina Subway.  Both Dundas West and Broadview Stations are accessible subway stations.

One single service is operated:  the 504 (Dundas West Stn-Broadview Stn) branch operates at all times, seven days a week.

Eastbound 504 BROADVIEW STN VIA KING

These streetcars operate from Dundas West Station via east on Edna Avenue, south on Dundas Street West, south on Roncesvalles Avenue, southeast and east on King Street West, east and northeast on King Street East, east on Queen Street East, and north on Broadview Avenue to Broadview Station.

Westbound 504 DUNDAS WEST STN VIA KING

These streetcars operate from Broadview Station via west on Erindale Avenue, south on Broadview Avenue, west on Queen Street East, southwest and west on King Street East, west and northwest on King Street West, north on Roncesvalles Avenue, and north on Dundas Street West to Dundas West Station.

All streetcars on the route serve local streetcar stops along the route.