Details emerge on Brad Pitt and Angelina Jolie's infamous plane fight

New details have emerged on the infamous plane fight between Brad Pitt and Angelina Jolie that allegedly led to Jolie filing for divorce in September 2016.

Sources close to the situation told Us Weekly this week that the flight from Nice, France to Los Angeles on September 14, 2016, which the couple was flying on with their six children, wasn't actually the proverbial nail in the coffin as had become a common assumption. In fact, Jolie had already known for months that she wanted to divorce her husband of two years.

SEE ALSO: Brad Pitt speaks out for first time on Angelina Jolie divorce: Our family's been 'ripped apart'

That being said, the fateful flight highlighted the couple's issues -- and Pitt's issues with substance abuse.

During the 12-hour flight, Pitt was allegedly "drinking heavily" as a frustrated Jolie looked on and asked him to "sober up" while their plane refueled in Minnesota.

Upon arrival, Jolie reportedly contacted a "travel coordinator" to send extra cars to bring her and the kids to a hotel -- without Pitt. Maddox, 15, Pax, 13, Zahara, 12, Shiloh, 10, and Knox and Vivienne, 8, "piled into the cars Angie pointed them to and locked the doors."

See photos of the couple together:

"She said they could talk about everything in the morning," a source told Us.

Since September, reports have indicated that there was some sort of altercation between Pitt and their oldest song, Maddox, that resulted in the "Allied" actor being investigated for domestic abuse. After multiple investigations, the actor was cleared of any wrongdoing.

The details emerged just days after GQ Style published its latest cover story in which Pitt opened up about their shocking divorce for the first time. He told the magazine that the split has "ripped apart" his once-happy family.

"I was really on my back and chained to a system when Child Services was called," Pitt told GQ Style. "And you know, after that, we've [he and Jolie] been able to work together to sort this out. We're both doing our best. I heard one lawyer say, 'No one wins in court -- it's just a matter of who gets hurt worse.' And it seems to be true, you spend a year just focused on building a case to prove your point and why you're right and why they're wrong, and it's just an investment in vitriolic hatred."

He also opened up about his "stoner days" and struggle to get sober after years of substance abuse.

"I can't remember a day since I got out of college where I wasn't boozing or had a spliff, or something," he told the magazine. "I'm really, really happy to be done with all of that. I mean, I stopped everything except boozing when I started my family. But even this last year, you know -- things I wasn't dealing with. I was boozing too much. It's just become a problem. And I'm really happy it's been half a year now, which is bittersweet."

See photos of Brad Pitt through the years:

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