Surveys based on the density of the adult wheat midge, Sitodiplosis mosellana (Géhin) (Diptera: Cecidomyiidae), were conducted at ground level and at heights between 10 and 75 m in Xushui county (39.02 °N, 115.65 °E), Hebei province, China, in 2011. The HYSPLIT-4 model was used to analyze the possible dispersion trajectories and distances of S. mosellana depending on the experimental location. The wheat midges were trapped at altitudes from 10 to 75 m a.g.l. strongly suggest that they might also be present at much higher altitudes, where potentially, they could take advantage of the fast moving air currents. 6-h backward-trajectories indicate that adult S. mosellana could have come from both north and south, and the trajectory distances were 25–107 Km. 6-h forward-trajectories indicate that adults most likely migrated to an area located in Tianjin, Beijing and northern Hebei province, north china, and the trajectory distances were 28–195 Km. In this study, no male midges were captured at 10 m or above, which suggest male midges don’t engage in wind borne long distance migration, suggesting S. mosellana mated before dispersal. The information presented here is helpful to alter the way we view their migration over limited distances and add to our ability in outbreak forecasts.