September 11th, 2001 was a day that affected everyone. The world came to a stop. The aviation industry was affected, and the national airspace system was closed for a few days. The events that occurred on that specific day enacted changes that affect the industry to this day. This paper analyzes some of the changes that were made and discusses some of the changes the industry is going through again, about 20 years after the events on September 11th. The coronavirus pandemic has changed the way we all live our daily lives and aviation is not exempt. Changes to aircraft cleaning procedures, boarding processes, and seat design have all been ways the industry has gone through changes. The results of a potential recovery as well as the long-term changes are discussed.