The UK ban applies to direct inbound flights from six countries; the US ban lists eight countries
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.
This will be a chance for the Trump administration to put its stamp on the global battle against the Islamic State group, and for the reticent secretary of state to put his stamp on a foreign policy issue that the president has identified as a priority.
The State Department says the meeting aims to accelerate efforts to defeat IS in its remaining strongholds: the Iraqi city of Mosul and the Syrian city of Raqqa.
On the campaign trail Mr Trump claimed to have a secret plan to obliterate the group. But his Pentagon has largely stuck with Barack Obama's strategy of supporting local ground forces, albeit with increased US military participation as the assault on Raqqa nears. Coalition members will also discuss how to stabilise and govern the cities after the conflict; and they're looking to see if Washington remains committed to a longer term effort to secure the region.