This will be the Thunder's only trip to Chicago this season.
The Thunder are scheduled to play the Bulls on Saturday at 8 p.m. ET.in the United Center.
Shortly after the ordeal, players took to social media to describe the incident.
"What possibly could we have hit in the SKY at this time of night?" player Carmelo Anthony asked in his post on Instagram.
After disembarking, National Basketball Association stars Carmelo Anthony and Josh Huestis posted pictures of the damage to social media.
A team official told ESPN that while Delta flight 8935 was a little rocky, it was nothing out of the ordinary.More news: Man United get Jones boost ahead of Tottenham clash
A plane carrying New Zealand basketballer Steven Adams has been involved in a incident in mid-air. "Flying to chicago", he wrote - appealing to NASA, astrophysicist Neil deGrasse Tyson, and science presenter Bill Nye to solve the mystery of what could have caused the huge dent.
Huestis tweeted: "I guess we hit something?"
Several Thunder fans suggested the damage could have been caused by a bird strike - like this American Airlines aircraft damaged on its way to Dallas, Texas previous year.
The nose of the plane is completely crumpled in, as if it had been punched by a giant fist in the air, and Delta's explanation of how it happened makes the picture even more incredible. According to a statement Delta airlines issued via USA Today...a bird. Usually wildlife collisions are not fatal, although they have killed some 250 people worldwide since 1988 says the group.
That may change after what the Oklahoma City Thunder experienced early Saturday morning.
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