The US and UK are banning laptops from cabin baggage on flights from certain countries in the Middle East and North Africa, as well as Turkey.
The US ban on electronic devices larger than a smartphone is being imposed as an anti-terrorist precaution.
It covers inbound flights on nine airlines operating out of 10 airports. Phones are not affected.
The British ban, announced hours after the American measure, is similar but applies to different airlines.
The nine airlines affected by the US ban are Royal Jordanian, EgyptAir, Turkish Airlines, Saudi Arabian Airlines, Kuwait Airways, Royal Air Maroc, Qatar Airways, Emirates and Etihad Airways. British Airways and EasyJet are among the airlines affected by the UK ban.
At this stage, the Australian Government says it has no plans to to enact a similar ban. However, Australians travelling to the UK or US from one of the nominated countries — or with an affected airline — look set to be hit by the ban on electronics.