Commuters can expect normal service to resume at Nottingham station on Monday, three days after a suspected arson attack caused “significant” damage.
A full timetable is planned for all routes following a huge blaze at the railway station on Friday.
East Midlands Trains said Sunday services had been operating well.
Passengers have been advised to book tickets online, while those already purchased can be collected from any station or by giving a booking reference number to train staff.
Jake Kelly, managing director of East Midlands Trains, said: “We are pleased to have been able to resume our full train service so quickly. This is tribute to the huge amount of work carried out by East Midlands Trains staff as well as colleagues in Network Rail.
“We are continuing to have a great amount of support from the emergency services and our contractors and I know that people have been pleasantly surprised by how quickly we have managed to get the station back up and running.
“I personally have been heartened by the kind words of support from the local communities, our stakeholders and our customers.
“I remain incredibly proud of the team effort everybody in the city and the wider region has displayed over the past three days.
“We are continuing to work with Network Rail to determine the precise level and detail of repair work needed at the station and we will keep customers updated as soon as we have further information.”
The fire is believed to have been started deliberately in toilets shortly after 6.30am on Friday, before it spread to the station’s concourse roof.
It took 60 firefighters to control the blaze and the station remained closed for the rest of the day.
British Transport Police (BTP) have said the fire may have been started deliberately and are appealing for information from members of the public.
The Grade II listed station was built in the mid-19th century and refurbished in recent years.