It wasn't immediately clear if other global airlines would be affected, though the Trump administration previously rolled out a laptop ban and travel bans that have thrown global airlines into disarray.
The US Department of Homeland Security did not immediately respond to a request for comment. However, it comes at the end of a 120-day deadline for airlines to meet new US regulations following the ban on laptops in airplane cabins of some Mideast airlines being lifted.
It urged those flying through Dubai International Airport, its headquarters, to allow extra time to check into flights and board.
"These measures will work in complement with the current additional screening measures conducted at the boarding gate," it said.
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Hong Kong-based Cathay Pacific Airways Ltd said on its website that it had suspended self-drop baggage services and that passengers heading to the US "will be subject to a short security interview." Those without bags would have a similar interview at their gates.
That laptop ban, as well as travel bans affecting predominantly Muslim countries, have hurt Mideast airlines. Emirates, the region's biggest, said it slashed 20 per cent of its flights to America in the wake of the restrictions.
It wasn't immediately clear if other Mideast airlines were affected by the new rules.