In September, EuroAirport Basel–Mulhouse–Freiburg experienced a bustling month with 929,665 passengers, 6,407 metric tons of cargo, and 9,262 flight movements. This month marked the highest number of passengers recorded for September, surpassing the previous maximum of 929,665. The cargo handled was also notable, reaching the maximum historical value for September. Flight movements were close to the historical high for September, just shy of the all-time maximum of 9,600.

Comparing these figures to the historical monthly data, the average number of passengers for September in past years was 697,129, with a minimum of 235,821 and a previous maximum of 929,665. The average flight movements for September were 7,652, with historical values ranging from 5,076 to 9,262. Cargo in September averaged 5,157 metric tons, with a minimum of 3,853 and a previous maximum of 6,407 metric tons.

Looking at the all-time records across all months, the highest number of passengers was recorded in August 2025 with 1,010,155, while the lowest was 1,177 in April 2020. The maximum cargo handled was 6,770 metric tons in March 2022, and the minimum was 3,853 metric tons in September 2025. Flight movements peaked at 9,600 in June 2019, with the lowest at 1,035 in April 2020.