Top US Air Carriers Ban Hunting 'Trophies' From Planes

The move comes after an uproar over the killing of Cecil, a lion in Zimbabwe.

"Prior to this ban, Delta’s strict acceptance policy called for absolute compliance with all government regulations regarding protected species," a spokesman said. "Delta will also review acceptance policies of other hunting trophies with appropriate government agencies and other organizations supporting legal shipments."

Some international carriers have held policies against transporting “trophies” since before the debate over the recent lion death.

Virgin Atlantic banned such transport "as part of our ethical cargo policy adopted a number of years ago" and it goes so far as to include endangered species and shark fins "and any animals for research purposes," spokeswoman Harriet Bevis said.

There are at least half a dozen airlines that have international flights to and from Africa that have not clarified their hunting trophy policy.

ABC News' Katherine Faulders contributed to this report.