Iraqi Kurdish security officials said that a drone attack targeted near US forces stationed at Erbil International Airport in northern Iraq.
The internal security service of the autonomous Kurdistan region of Iraq initially said three missiles landed near the airport on Saturday.
There were no immediate reports of injuries.
US officials blame previous attacks on Iran-aligned Shiite militias, who vowed to keep the fight going until the remaining US troops leave the country, estimated at 2,500.
US forces lead an international coalition whose mission is to help Iraqi forces fight the remnants of the radical group ISIS.