Pictures on social media showed the tail of one of the planes had been shorn off.
Two planes have collided on the runway at Atlanta airport in the US state of Georgia.
Pictures on social media showed the tail of one of the planes had been shorn off.
Delta Air Lines said one of its planes struck a regional jet while taxiing for departure, damaging both aircraft.
No injuries were reported and Delta said passengers would be rebooked on other flights.
The airline said the wing of a Delta Airbus A350 that was set to depart for Tokyo-Haneda made contact with the tail of an Endeavor Air CRJ-900 scheduled to depart for Lafayette, Louisiana. Endeavor is a subsidiary owned by Delta.
A man who was on one of the planes tweeted to say “another plane appears to have clipped the back of our plane”.
“Very jarring, metal scraping sounds then loud bangs,” he added.
The Federal Aviation Administration said it will investigate.