Explosive-laden drones attacked the international airport close to the American consulate in the northern Iraqi city of Erbil late on Tuesday, Kurdish authorities said.
The attack took place about 8.30pm but caused no injuries or major damage, with firefighters putting out a blaze, the anti-terrorist unit of the autonomous Iraqi Kurdistan region said.
The airport in Erbil, which houses a military base of the international coalition fighting ISIS, was also attacked in April by a drone packed with explosives.
Since the start of the year, dozens of attacks have been launched at US interests in the country, where 2,500 American troops are based as part of the coalition.
On Monday, US troops shot down an armed drone above the country's embassy in Baghdad.
Hours earlier, three rockets had been fired at an air base in the western Iraqi desert that also housed US troops.
The US recently offered up to $3 million for information on attacks against its interests in Iraq.