The hire reopened at 4.45am but two of its platforms sojourn sealed and comforts are reduced, with no lifts, toilets or step-free access, National Rail Enquiries said.
Stopping trains between London and Nottingham are back to normal, East Midlands Trains has said, but faster services will start and cancel at East Midlands Parkway.
Other influenced routes embody Nottingham to Worksop, with all services cancelled and a deputy sight service in place.
It is a bustling day for the station, with football fans travelling to the city for Nottingham Forest’s home tie against Aston Villa, and Notts County supporters streamer northeast for an divided compare against Lincoln City.
Jake Kelly, handling executive of East Midlands Trains, pronounced some “normal facilities” would not be accessible following “significant repairs to the station”.
“While we will be means to run many of the normal timetabled services, there will continue to be some intrusion in the next few days as a outcome of the fire,” he said.
Alternative plans are in place for several of the rail operator’s services.
The fire began in a toilet at about 6.30am on Friday, quick swelling to the roof of the station.
Around 60 firefighters were called to the stage at the tallness of the blaze. Incident commander Bryn Coleman pronounced crews used respirating apparatus as they battled “some genuine serious conditions”.
No one appears to have been injured.
Police reliable after on Friday that they were treating the fire as a suspected arson attack.
“Inquiries have been ongoing and we now have reason to trust the fire may have been started deliberately,” pronounced Superintendent Sandra England, from British Transport Police.
“Officers are operative to brand anyone who may have been concerned in the incident, and we are appealing for information from members of the public.”
The Grade II listed station, which has been refurbished in new years, was built in the mid-19th century.
Details of East Midlands Trains services
:: London to Nottingham – interlude services will run as normal, while quick services will start and cancel at East Midlands Parkway
:: Liverpool to Norwich – services using as normal
:: Nottingham to Worksop – all services cancelled and a rail deputy sight service will operate
:: Matlock to Newark – services to run between Matlock and Derby only.
:: Leicester to Lincoln – services to run between Leicester and Loughborough and between Nottingham and Lincoln only
:: Nottingham to Skegness – services to run as normal
:: East Midlands Trains routes which do not run around Nottingham (Crewe, Grimsby, Lincoln to Peterborough, and Lincoln to Doncaster routes, as good as other mainline services) will work as normal.
:: CrossCountry Nottingham – Derby – Birmingham services and Northern Leeds – Nottingham services are approaching to run as normal.
:: Details of any continued intrusion at the hire can be found at eastmidlandstrains.co.uk