A representative for the 41-year-old "Revenant" star has responded to the criticism, saying he only hitched "a ride with flights that were already planned," reported Aceshowbiz.
"He was asked to speak at both Riverkeeper and amfAR events, but the only way to attend the two fundraisers was to hitch a ride with flights that were already planned. Leo helped both events raise millions, donated his own funds, auctioned off his house and had speaking roles in both programs," his rep said.