Passenger Fred Edwards told WGCL-TV in Atlanta that following the explosion flames came up the side of the plane, lighting up the interior of the Airbus A319.
Spirit spokeswoman Misty Pinson says the captain received an indication of a "possible mechanical issue" shortly after takeoff from DFW airport Tuesday. Pinson says there was smoke in the cabin and one engine shut down. She said by email Wednesday that there was no fire.
She says no one on Flight 165 was injured.
The 145 passengers were placed on another Spirit jet for Atlanta later Tuesday.