A recent Instagram post has many wondering if Scott Disick has left rehab.

"Private aviation is my motivation," the 32-year-old reality star captioned a photo of him boarding a jet.

WATCH: Scott Disick Checks Into Drug and Alcohol Rehab Center for Treatment

The photo was posted Tuesday, nearly one month after Disick checked into a drug and alcohol rehab center in Malibu, California for treatment.

Disick ran into his fair share of troubles in 2015. He and longtime love Kourtney Kardashian called it quits in July after Disick was photographed cozying up to an ex-girlfriend in Monte Carlo. "I made the worst decision I've ever made in my life," Disick told Kardashian in front of Keeping Up With the Kardashian cameras.

Disick’s three children -- 5-year-old Mason, 3-year-old Penelope and 10-month-old Reign -- visited him at the rehab center last month, along with Kris Jenner. While his ex Kourtney, 36, was absent, she continued to support him from afar.

WATCH: Scott Disick Gets a Visit in Rehab From Kris Jenner and His Kids

A source told ET that is was Kourtney's idea to let their children visit their father.

"Kourtney would never want to keep the kids from their dad," the source said. "That has always been her No. 1 rule. She does not want to see Scott at the moment, but she will never keep the kids away from him."

MORE: Kourtney Kardashian Continues to Support Scott Disick in Rehab

This last rehab stint is believed to be Disick's longest stay. Disick has previously attempted rehab multiple times in the past year. Back in March, he stayed at the Rythmia Life Advancement Center in Costa Rica for one week. On July 5, Disick checked into rehab in Florida, according to Us Weekly, and left Connecticut's Mountainside Treatment Center after just five days, which was chronicled in a November 2014 episode of Kourtney & Khloe Take the Hamptons.

ET has reached out to Disick's rep for comment.