All flights to and from Luton Airport were suspended on Tuesday night after a fire spread through a multi-storey car park, causing it to collapse.
As of Wednesday morning, no flights were expected to land or depart from the airport until 15:00.
Videos posted on social media showed flames and smoke tearing through cars parked at the newly-built car park.
Up to 1,200 vehicles may have been in the car park at the time of the fire and subsequently damaged.
At the peak of the incident there were 15 fire engines, three aerial appliances and more than 100 firefighters at the scene. Crews from Bedfordshire Fire and Rescue Service were joined by fire colleagues from Buckinghamshire, Cambridgeshire, Hertfordshire, Northamptonshire and London Fire Brigade along with Bedfordshire Police and the East of England Ambulance Service.
The fire has now been put out, but four crews and an aerial appliance remain at the scene to monitor the smoldering remains.
Andy Hopkinson, chief fire officer at Bedfordshire Fire and Rescue Service, told reporters that there was no intelligence to suggest it was “anything other than an accidental fire”.
