Holidaymakers passing through Glasgow Airport this morning were treated to "crazy scenes" with people queued outside the terminal to pass through security.
One traveller said they had "never seen it this bad", with people queuing right back into the car park as they waited to pass through to the departure lounge prior to boarding their flights.
John Morrison estimated that there "hundreds" of people waiting when he arrived at the airport at 5:45am this morning.
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He told Glasgow Live: "I had checked in online and arrived at the airport about an hour before scheduled departure. It's a day trip and with no luggage to check in went straight to the escalator.
"There were hundreds of people waiting to get through the barriers before security. The queue was snaking round the first floor shops all the way back to the car park entrance. This was 5:45am.
"Most people seemed to be going on holiday and were in a good mood but no-one could understand why the queues were so bad."
A spokesperson for Glasgow Airport said: "This morning’s average queue time at security was longer than usual, however, passengers moved through at a steady pace to reach their flights.
“The airport is busier than it has been for more than two years as passenger demand continues to increase.
“Our teams are working extremely hard and we would ask passengers to ensure they come prepared for security inspection and, crucially, arrive at the airport as per their airline’s stated check-in opening time and not before.”
“We would like to take this opportunity thank our passengers for their patience.”