EasyJet has apologised to customers after a software failure forced it to cancel some 200 flights.
The airline initially announced the flights affected would be those departing between 13:00 and 15:00 BST on Thursday, but then said the disruption could last longer.
Airports across the UK have been affected. A further 14 Gatwick flights have been cancelled on Friday so far.
In a statement, the airline said: "easyJet can confirm that the earlier IT systems issues have now been rectified