One of the main applications of atmospheric science is in aviation meteorology, in which weather conditions and their impacts on aviation are explored. This study aims to examine meteorological factors that have contributed to the cancelation or the delay of flights at Bandar Abbas airport. In this study, meteorological factors that have the largest effect on the cancelation or the delay of flights in Bandar Abbas airport are examined. These factors include wind speed and direction, precipitation, temperature, pressure, humidity and cloud cover. To this end, information on the cancelation or the delay of flights and meteorological data were obtained for 2019. The results indicate that there is a strong link between meteorological conditions and the cancelation or the delay of flights in Bandar Abbas airport, the most important of which in this international airport are rainfall, haze (including dust), fog, thunderstorm, pressure, horizontal visibility and relative humidity. Among these factors, horizontal visibility has the most impact on the cancelation of flights in this airport. The mean horizontal visibility in Bandar Abbas airport reaches minimum values in autumn and winter. Thus, the number of cancelations is higher in Dey, followed in decreasing order by Bahman and Azar