EuroAirport, located on the French side of the border near Basel, said on its website that it had reopened and that flight operations were gradually restarting.
Earlier, the Basel-Mulhouse airport said it had been evacuated and closed “for safety reasons”.
The prefecture of France’s Haut-Rhin department told AFP the evacuation had been due to a bomb threat and that bomb-disposal experts were deployed.
Several French airports, including EuroAirport, had to be evacuated late last year due to a series of fake bomb threats.
EuroAirport welcomed eight million passengers in 2023.
The evacuation came as French authorities were hunting for the perpetrators of arson attacks on the high-speed train network, which disrupted travel for hundreds of thousands of people.
The Paris Olympics opening ceremony will be held Friday evening.
