The reality star, who recently celebrated her 33rd birthday in Mexico, shared her anxiety of being trapped in small spaces with her 5.8 million Twitter followers earlier today before boarding a flight out of LAX.
Feeling hemmed in: Kourtney Kardashian and son Mason leaving LA today
While walking into the airport, Kourtney carried her two-year-old son, Mason Disick, as well as her $2,000 Celine Luggage Tote.
The Kardashian sister also wore an artful white blazer over an all-black stretchy outfit, and little Mason wore a red-hooded tracksuit with a navy New York baseball hat and tiny Air Jordans.
Sleek: There was barely any sign of Kourtney's growing bump in the well-tailored outfit
Sharp shooter: Little Mason looked fab in bright red against his mother's monochrome outfit
'I think it's a little bit harder being pregnant when you have a toddler I'm chasing after. Last time I could nap more,' Kourtney told People magazine earlier this month.
She and the baby's father Scott Disick, who was recently Punk'd on MTV, are keeping possible baby names on Kourtney's cell phone.
'I have my little list of names, and I cross it off one day and a new one comes. We definitely don't have the name. We're going back and forth,' said Kourtney who is due in July.
The 'fams': Kim and Khloe headed for dinner in New York's meatpacking district tonight
Matriarch: And it wasn't long before Kris Jenner joined them
The enterprising sisters also recently announced the Melrose location for their new DASH West Hollywood store.
A throng of angry anti-fur protesters from Last Chance for Animals camped out at the clothing store's Calabasas location last week