Glasgow Airport has reported a rise in passenger numbers for the first time since August 2007.
The number of people passing through the airport in January was up by 8% - the biggest monthly growth recorded since December 2004.
The passenger total of 417,721 saw a 9% increase in domestic traffic with international business up by 6.4%.
Glasgow Airport described the figures as "very encouraging" after a "hugely challenging period for the industry".
Airport managing director, Amanda McMillan, said: "There are now real signs of a recovery in demand.
"We are confident that the M74 and M80 improvements will also allow us to expand our natural catchment area and attract greater numbers of passengers from central Scotland, Lanarkshire, Dumfries and Galloway and northern England."
Ms McMillan said that while the figures were "promising", the industry still needed help from government.
"We remain concerned about the long-term impact of UK government increases in Air Passenger Duty, particularly in the absence of any form of route development support from the Scottish government.
"This double whammy will seriously undermine our efforts to attract new airlines to Scotland and could discourage existing carriers from investing in further expansion."