A Delta Air Lines flight from Salt Lake City, Utah, to Portland, Oregon, had to return to Salt Lake City because of an air pressurization issue in the cabin.
Passengers realized something was wrong moments after takeoff.
"I looked over at my husband, and he had both of his hands over his ears, you know, kind of leaning forward," Caryn Allen told KSL.
Other passengers started suffering bloody noses and ears as the flight crew tried to help.
"I looked about a row behind me, over on the other side of the aisle, and there was a gentleman that clearly had a very bad bloody nose, and people were trying to help him," Allen said.
Paramedics were waiting for the passengers when the plane landed and treated ten people who suffered minor injuries, including ruptured ear drums.
"We sincerely apologize to our customers for their experience on flight 1203 on Sept. 15," a Delta spokesperson said in a statement. "The flight crew followed procedures to return to SLC where our teams on the ground supported our customers with their immediate needs."
The passengers were accommodated on another flight. Delta said that the plane was taken out of service for the day so technicians could fix the issue.