THE Government will tomorrow unveil delayed opening dates for the Chek Lap Kok airport and figures showing dramatic increases in costs unless there is speedy approval on financing from China. Officials will concede the earliest opening date for the new airport has shifted from early to late 1997, according to sources. It will be the first official acknowledgement that the airport facilities will not be ready for the scheduled opening. Officials have already said the $33.5 billion railway would not be ready by mid-1997, but until last week had held out hope the airport could be opened on time. However, with China yet to agree on financing construction of the airport terminal and the connecting railway, officials are prepared to concede it will take a miracle to have both open by mid-1997. The Government is expected to warn of further slippage unless there is immediate approval from China over the financing arrangements. Figures showing the dramatic financial consequences of further delay to the rail link and associated projects will also be released tomorrow. While eight out of 10 core projects are fully funded and underway, China has yet to give its approval to the amount of money the proposed Airport Corporation and the Mass Transit Railway Corporation will be allowed to borrow to build the airport and the railway. The total cost of the 10 projects has been estimated at $164 billion. a figure that is set to increase sharply the longer there are delays to construction. According to one insider, the only way the airport could be opened in 1997 would be to ''throw money at it'' in a works acceleration programme. ''We can't go on holding up the airport and the airport railway,'' said Provisional Airport Authority (PAA) corporate affairs director Clinton Leeks. ''All we can do is encourage people to reach the necessary agreements,'' PAA chief executive Dr Hank Townsend said. ''There has to be a collective will with everyone involved, on all sides.''