Delta Airlines flight DL-803 had to return and make an emergency landing at Cincinnati/Northern Kentucky International Airport, Kentucky, on March 23rd.
The plane took off for Orlando, Florida, but had to return shortly afterwards due to reports of a smoky odor in the cabin.
The plane landed back safely. All 148 passengers aboard remained unharmed.
The airline arranged a replacement plane for the passengers.

Ryanair flight FR-7347 had to return and make an emergency landing at Henri Coanda International Airport, Romania, on February 9th.
ASL Airlines France flight had to divert and make a forced emergency landing at Toulouse-Blagnac Airport, Blagnac, France, on September 14th.
EgyptAir flights 631, 650, 664, 834, 921, 959, 969 had to divert and make emergency landing at Sharm El-Sheikh and El-Ghardaga Airports, Sinai Peninsula, Egypt, on April 3rd.