Passengers flying to Valencia aboard a BA flight were terrified after the cabin of their Airbus A321 began filling with thick smoke.
Travellers on flight BA422 complained of difficulty breathing as the cabin smoked up on approach to land at Valencia airport.
"Still waiting to hear what actually happened," said passenger Gayle Fitzpatrick, who was flying with his wife from Heathrow.
"I think everyone is still in shock. No one knew what was happening," he said. "The most important thing is we are all safe. It was very surreal and scary."