Passengers arriving at Gatwick airport's south terminal have faced long delays in collecting their baggage, with some reportedly waiting up to three hours.
Many have been told to go home and their luggage will be sent to them.
An airport spokesman said the overnight disruption was caused by "resourcing issues" involving baggage handlers Swissport.
"Due to resourcing issues with the baggage handlers Swissport there were overnight issues and delays with passengers' luggage," he said.
"Gatwick provided extra staff to help the airlines and their baggage handlers improve their service, as well as providing welfare and water for passengers waiting in the baggage areas, but we are sorry for the delays they faced.
"Baggage operations are now returning to normal."
Earlier this month (July 15) Gatwick told passengers to expect long delays when collecting baggage due to staff shortages at Swissport.