More than 100 international and domestic flights have been turned away from Brisbane Airport overnight, after thick fog descended over the tarmac.
At least 80 flights were cancelled and 30 more diverted during what has been described by an airport spokeswoman as "incredibly unusual".
The weather event started to have an impact about 8pm on Friday and hung around until the early hours of Saturday morning.
The Brisbane Airport spokeswoman said there were usually 30 domestic flights at the airport overnight, but this had been reduced to three as a result of the fog.
Services were heavily impacted on Saturday, as airlines felt the residual affects of their aircraft having been diverted to the Gold Coast, Melbourne and Sydney.
Passengers were left waiting in the terminal for their planes to arrive and were being urged to keep in close contact with their airline for updates as more reshuffles and cancellation were expected.
On Saturday morning the fog cleared to reveal glorious conditions on the tarmac but the airport said "it will not be a happy travel day".
While the airport was working to clear the backlog, some passengers would not be able to secure a seat until at least Monday.
CityCats and ferries were also affected by the thick blanket of fog on Friday night, with vessels running at reduced speeds along the Brisbane River.