Brisbane Airport may introduce additional charges for peak periods if it cannot come to an agreement with airlines about emerging congestion problems.

The airport flagged the possibility on Oct. 9 as it announced a five-year agreement with airlines.

The peak charge would not be introduced until 2010 and, if adopted, would be used to discourage small aircraft landing in peak periods.

The airport will charge airlines an additional AU$1 per domestic passenger in mid-2009 and international per passenger fees will initially jump 23 per cent to eventually reach AU$23.36 in 2011, up from AU$15 currently.

The increases will cover the airport's busy expansion agenda, with the exception of its newly approved parallel runway, slated for completion in 2015.

Expansion plans include new aprons, roads and a bigger international terminal.

Commenting on the peak period charges, Brisbane Airport Corporation chief financial officer Tim Roth said the airport wanted to work with airlines to ensure it did not build its proposed new runway too early, which would ultimately mean managing congestion on its current runway.

"Our preference is to work with the airlines to spread the peak services into the shoulder, to take whatever steps we can to get the most efficient use out of the current system," he said.