The E! star and the rapper were photographed separately at LAX airport on Wednesday evening.
The brunette beauty kept it casual for the flight, sporting a red plaid top with a black T-shirt and holding a big red handbag. Kardashian wore her sunglasses inside and kept her head down as the duo made their way through the terminal.
Montana surrounded himself with his entourage and tried to cover his face with a gray hooded sweatshirt.