Bristol Airport has urged passengers not to arrive too early.
The airport's words come after long queues there this morning. Several people took to social media to say the queue for security went all the way outside the airport.
One social media said the situation was "ridiculous" and that this was "the longest queue" he had seen in his life, while another described it as "absolute chaos". Earlier this week, people had to wait for hours to collect their bags, after a similar picture last weekend.
Read more: 'Shambles' again as passengers wait up to three hours to get bags
It is not the first time travellers have been forced to queue outside the building and this has happened on a number of occasions. It comes amid an exceptionally busy month for the airport.
Bristol Airport has now issued a statement about what happened this morning and urged travellers not to arrive too early. It said: "We are sorry customers experienced an above average check-in and security queue this morning (Thursday 19 May). The maximum queue time at check-in did not exceed 43 minutes and security queue time did not exceed 90 mins, no delays were experienced at bag-drop desks.
"We work closely with all business partners and airline handling agents to ensure staffing levels are sufficient to provide a good service to passengers. We constantly review resourcing across all areas and adapt plans to meet demand and build in resilience where possible.
“We appreciate the frustration experienced by customers currently and please be reassured our teams are working exceptionally hard to assist customers throughout the airport journey.
“All business partners are continuing to recruit and train new colleagues, but this takes time. We advise all customers to check with the airline when their check-in/ bag drop desk opens and arrive in the terminal at this time – do not arrive too early as customers will not be able to check-in.”