Supertram services will return to normal following the completion of engineering work to replace sections of the track.
Work finished on August 24 with a full service returning to all routes from August 25 - a week ahead of schedule.
Further works are not expected to restart until 2018.
Stagecoach Supertram is offering 21 per cent or more off of selected fares from August 29 to thank passengers for their patience during the project and to link with celebrations for the 21st anniversary of the network.
The project has seen over three thousand metres of worn out track in the Park Square, Castle Square, Hillsborough, Sheffield Station, City Road and Gleadless Townend areas of the city this year replaced.
Over 12km of rail has been replaced in the past three years and over 22km will be replaced in total.
SYPTE Interim Director General, David Young, said: “Sheffield’s trams have carried over 245 million passengers and travelled over 50 million miles in nearly 21 years on the original network – the equivalent of travelling to the moon and back more than 100 times - so large sections of track are close to being life-expired.
“The Supertram network is a fantastic asset for South Yorkshire and these essential works will protect its long-term future, including preparing the tracks for the new Tram-Train service that will operate between Sheffield and Rotherham from early 2017.”