Kent Nelson's lawsuit against the carrier, filed Friday in Multnomah County Circuit Court, claims there was a loud noise during the 4-hour flight that was loudest near his exit-row seat, The (Portland) Oregonian reported Wednesday.
The suit states Nelson complained to staff on the flight from Minneapolis-St. Paul Airport to Portland International Airport but they failed to offer him earplugs or any other form of assistance. Nelson said a flight attendant told him passengers had complained about the noise during an earlier flight.
The lawsuit says Nelson temporarily suffered from complete hearing loss in one ear and now has impaired hearing in both ears.
Delta officials could not be reached for comment, The Oregonian said.
The suit is seeking $2 million in damages.