A Delta jet with more than 200 people on board was evacuated on the tarmac at the Atlanta airport Friday morning after an engine issue prompted an aborted takeoff, leaving four people injured, airline and airport officials said.

Atlanta-based Delta Air Lines canceled more than 370 flights Saturday, and long lines of travelers waiting to go through security stretched through Atlanta’s Hartsfield-Jackson International Airport’s domestic terminal and baggage claim areas.

Flight 2668 had 201 passengers onboard, who were evacuated from the plane via emergency slides and taken back to the terminal via ground transportation, according to officials.