An aircraft cabin ban on large electronic devices was prompted by intelligence suggesting a terror threat to US-bound flights, say US media.
The US and UK have announced new carry-on restrictions banning laptops on certain passenger flights.
The so-called Islamic State group (IS) has been working on ways to smuggle explosives on to planes by hiding them in electronics, US sources tell ABC.
The tip-off was judged by the US to be “substantiated” and “credible”.
Inbound flights on nine airlines operating out of 10 airports in eight countries are subject to the US Department of Homeland Security ban.
Phones and medical devices are not affected.
US Secretary of State Rex Tillerson is hosting a two-day meeting of ministers and senior officials from 68 nations to discuss the threat from IS.
The Washington talks will be the first full meeting of the coalition since December 2014.