Method of miles-in-trail passback restrictions for use in air traffic management. Miles-in-trail restrictions can be used as a traffic management initiative when downstream traffic congestion at airports or in sectors is anticipated. To successfully implement the miles-in-trail at airspace fixes or navigational aids, it is desired that restriction values be computed for passing back to upstream facilities at specific boundaries. This method incorporates traffic manager feedback, resulting in significant improvement in guidance. Additional operational considerations required by traffic managers to implement the passback restrictions, namely maximum ground delay and absorbable airborne delay, are used in this method. The method also includes the step of absorbing a small amount of ground and airborne delays which are sufficient to handle the imposed constraint. The method further includes the step of implementing the passback restrictions to provide traffic managers ways to alleviate traffic constraints for reducing excessive airborne delay for current traffic conditions.