One passenger told the BBC she waited for two hours at passport control, another said after a flight from Cork she waited so long they were put into another area.
Other passengers expressed their frustration on Twitter.
Sophie Elliot posted on the social networking site: "Last night at Stansted we were trapped in queues of over an hour - longer for the people behind us - cos 'a few planes landed early'."
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More than 20 people are still unaccounted for after a huge blaze broke out at the 'rave cave' club night.
President Michel Temer arrived in Chapeco to oversee the remaining repatriation of victims of the Colombia plane crash.
Most parts will be dry this afternoon, although there are a few showers out to the western fringes of Britain.