Kourtney Kardashian and her new husband Travis Barker have reportedly been spotted taking a commercial flight - following backlash over the former's sisters' use of private jets.
Her sisters Kim Kardashian and Kylie Jenner have received widespread criticism in recent times due to their carbon footprint.
Kylie, 24, was branded a 'climate criminal' last month after she took a 12-minute flight on her $58 million Bombardier Global 7500 jet, dubbed 'Kylie Air'.