SACBO, the company that operates the airport, said in a statement the technical problem was solved around midnight, but a warning on the airport’s website said “flights may be delayed or cancelled”, The Irish Times reported.
The incident led to the cancellation of 26 departing flights with 6 diverted to other airports and 7 rescheduled for Sunday, local media said.
Thousands spent the night at the airport, with images showing people sleeping on the floor and baggage check-in belts.
The Bergamo online edition of Corriere della Sera daily said the first flights were halted at around 1700 (Irish time) on Saturday.
Real time information about flights on the airport’s website showed a long list of mostly Ryanair flights delayed, though several had departed on Sunday morning.
A 0605 Ryanair flight to Cagliari delayed to 0850 was showing as ‘departed’ as was a 0620 Neos flight to Sharm-el-Sheikh which had been delayed to 0855.