Security has been stepped up at airports across Australia after police said they foiled a plot for a bomb attack on a plane.
Four men have been arrested in raids on homes in Sydney.
Big delays are expected at airports during a busy time of the year.
One woman at Sydney airport said: “When I woke up and saw that on the news, yes I was very worried.
“Then I thought: ‘Sue, it’s probably going to be better coming now (travel) than at any other time because there’s extra security.”
Another woman said: “Well I don’t mind getting here two hours early instead of one hour early, if it means that we can all be that much safer. It’s great, yeah.”