The sisters shared photos of their cheat meal from the fried chicken chain on Instagram and Khloe couldn't contain her excitement.
"Yummmmm!! I couldn't wait!!! Popeyes on the PJ!!! Cheat day but it’s so worth it!!!" she captioned the snap.
It's not the first time the family have added a stash of fried chicken to their carry-on.
A year ago, Khloe, sister Kylie and mom Kris enjoyed a "Popeyes and PJs" party on a flight from New York City.