American Airlines flight AA-2587 had to return and make an emergency landing in Chicago, Illinois, on May 8th.
The Airbus A321-200 plane took off for Dallas/Fort Worth International Airport, Texas, but had to turn back after an odor was noticed in the cabin.
The plane landed safely. All one hundred and seventy-five passengers and six crew members remained unharmed.

Cathay Pacific flight CX-332 had to return and make an emergency landing in Hong Kong, China, on September 10th.
Thomas Cook flight MT-1033 made an emergency landing in Banjul, Gambia, on November 8th.