Delta Air Lines said that smoke appeared in the cabin of one of its airliners during the flight and made an emergency landing in Portugal on the afternoon of the 27th. According to Reuters, the flight number is DL251. It was originally scheduled to fly from Barcelona, Spain to Boston in the US. It was operated by an Airbus A330, with a total of 296 passengers on board. According to the 24-hour flight radar website, the flight took off from Barcelona at 15:15 local time on the 27th and landed at Francisco Sá Carneiro Airport in Porto, Portugal at 17:45 local time. A spokesman for Portugal's emergency rescue and civil protection department told Reuters that eight passengers were being treated at the airport and several others were taken to hospital. The spokesman said that the reason for the emergency landing was smoke in the cabin. The cause of the smoke is currently unknown.

Delta Air Lines said that smoke appeared in the cabin of one of its airliners during the flight and made an emergency landing in Portugal on the afternoon of the 27th. According to Reuters, the flight number is DL251. It was originally scheduled to fly from Barcelona, Spain to Boston in the US. It was operated by an Airbus A330, with a total of 296 passengers on board. According to the 24-hour flight radar website, the flight took off from Barcelona at 15:15 local time on the 27th and landed at Francisco Sá Carneiro Airport in Porto, Portugal at 17:45 local time. A spokesman for Portugal's emergency rescue and civil protection department told Reuters that eight passengers were being treated at the airport and several others were taken to hospital. The spokesman said that the reason for the emergency landing was smoke in the cabin. The cause of the smoke is currently unknown.