Delays to Sydney's train network continued into the early hours of Friday morning after a fatality at Burwood on Thursday morning threw the transport system into chaos.

By Friday morning's peak, services had returned to normal, the Transport Management Centre said, but that was not before a frustrating night for passengers across the city's rail network.

Late night shoppers and people returning home from dinner on Thursday joined the throng of commuters waiting for trains out of the CBD until after midnight.

Sydney commuters are bracing for a disrupted trip home after an earlier fatality at Burwood. Credit:Anna Kucera

The T1 Northern & Western line and T8 Airport line both tweeted after midnight, advising passengers to allow extra travel time and consider using night rider bus services instead.