City administration is still pulling together the final numbers on the cost of the airport tunnel, delaying a report that had been expected to go before council today.

The results of the highly anticipated cost-crunching exercise are being held up for the moment as the city sorts out some monetary requests being made the Calgary Airport Authority.

This is according to Ald. Jim Stevenson, who declined to give more details, but added he was confident everything would be ironed out in the next few days.

He still believes the final price tag will likely come in between $150 million and $200 million.

"I'm sure it's going to be in that area," he said.

The report will likely come to council in early February.

Mayor Naheed Nenshi said there will be a meeting with Transport Canada next week, where it's hoped the body will give its preliminary approval of the tunnel plans being proposed by the city.

Work is still being done on the construction cost estimates, he said, and there is still some "noodling" of engineering documents.

"It wasn't quite ready yet," Nenshi said. "They needed a few more days and I suggested I'd much rather have them have fully baked numbers than things that may still shift a little bit."