But it seems she may not be used to sharing a plane with the average Joe.
During the flight a disgruntled passenger asked her children to keep the noise down, and the 33-year-old was far from impressed.
The angry mother-of-two took to Twitter following her flight, ranting:
'People on airplanes are so wild these days... Telling other people's children to cover their mouths. Cover YOUR mouth.'
The oldest Kardashian sister was returning from a beach holiday with partner Scott Disick, and children Mason, four, and their 18th-month old daughter Penelope.
And it seems Kourtney has always been a little feisty.
Speaking about her relationship with sister Kim, her junior by 18 months, she admits:
'When we were growing up, I could boss Kim around! Once she threw me this party with all my friends at a house in Palm Springs and when I got there everyone was like:
"Surprise!" and I was such a little b*tch to Kim.
'The whole weekend I was really mean to her. I was such a bossy older sister!'
Despite Kourtney not being able to boss reality star Kim around anymore, they still fight about clothes.
'It's so stupid and catty I know, but we've done it our whole lives. We're only 18 months apart, so we've always shared our clothes. It caused so many fights growing up. Thank God we don't wear the same size shoe!'