Thick fog diverted flights from Perth AirportGraeme Powell, Friday June 20, 2014 - 13:23 EST
A thick blanket of fog over Perth affected domestic and international flights at the airport earlier today.
The fog descended on the city early last night and extended to the Wheatbelt and parts of the South West.
Perth Airport said 45 flights were affected, including 19 international flights and 26 domestic.
Most of those were delays.
A spokeswoman said some incoming flights were forced to circle the airport until they could land, while others were diverted.
She said operations returned to normal about 4:30am (AWST), however, there would be delays as the backlog is cleared.
Qantas said two flights from Melbourne and Brisbane to Perth had been diverted to Adelaide.
It is understood a Cathay Pacific flight was diverted to Alice Springs and a Singapore Airlines plane diverted to Adelaide.
Perth Airport has advised passengers to check its website for updated information.
© ABC 2014
More breaking news
Storm-force winds forecast to hit South Australia this week will be the strongest the state has had in more than 50 years, the weather bureau has warned.
Heavy rains across New South Wales have farmers reassessing possible machinery purchases despite their still expressing interest in new equipment.
Australia's tropics are acting like it's already the wet season, even though September is technically the final month of the dry.