The airport sits on the border between Germany, France and Switzerland (Image: Getty)
Passengers and staff were ushered out of the facility on July 26 for "security reasons" after a "bomb threat" was discovered, EuroAirport told the Agence France-Presse (AFP).
Flights were resumed shortly afterwards, with a flight to Paris delayed due to the evacuation.
The international airbase sits within French territory but is operated by both France and Switzerland, with a governing body also including officials from Germany.
It serves the three nearby cities of Basel, Mulhouse and Freiburg and hosts flights from airlines across Europe.
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EuroAirport welcomed around 8.9 million passengers from around the world in 2024, marking a 10.2% year-on-year rise and making it the second-busiest year in the facility's history.
Industry figures also showed that airports across Europe welcomed more passengers last year than before the COVID-19 pandemic.
Total passenger traffic rose 1.8% above its 2019 equivalent in 2024, according to the Airports Council International (ACI), with growth primarily driven by international rather than domestic travel.