A "power issue" that affected fuel supply caused dozens of flights to be cancelled at Britain's Manchester Airport.
Flights to Tenerife, Belfast, and Milan were among 87 cancelled, while others were delayed by hours.
Passengers said they were stuck on grounded planes for two to three hours because of the problems, which began on Sunday afternoon.
A Manchester Airport spokesperson said the issue had been resolved at 03:00 BST, the BBC reports.
They said "most scheduled flights" would operated as planned today (Monday).
"However, we expect that there will be a small number of delays and cancellations as a result of the issues experienced."
The airport said engineers had "resolved the power issue which affected the fuel supply" and advised passengers to check the status of their flight with the airline.
Of the 87 flights cancelled on Sunday, 42 were arrivals and 45 were departures.