Air traffic control company NATS warned passenger that it will take some time for flight scheduling to fully recover despite their computer systems having been restored.
The airport say they have managed to avoid any cancellations and are working to clear the backlog in flight times.
Passengers are advised to contact their airlines for information about delays.
Tony Hallwood, Aviation Development & Marketing Director at Leeds Bradford International Airport confirmed that all flights out of the airport are currently suspended.
However, all flights on approach to the airport have landed and says their focus now is on getting the situation resolved as quickly as possible, based on guidance from Nats.
Leeds Bradford Airport was briefly evacuated today after fire alarms were set of.
Passengers were taken out of the main terminal building and the airport closed but West Yorkshire Fire Service say it was a "false alarm" after the glass on a fire alarm was broken.
Flights are just resuming at Leeds Bradford Airport after a light aircraft training aircraft collided with a mast.
It happened at around 4:15 this afternoon as light aircraft owned by Multiflight Aviation School was taking off.
One person was treated on site for minor injuries. The airport was closed for an hour and a half. It reopened a few minutes ago. There are some delays, but passengers should check in as normal.
All flights into Leeds Bradford International Airport are being diverted.
It is understood a light aircraft has hit a mast.
It is unclear if anyone has been injured.
A man and a woman have been charged with drug smuggling after Border Force officers at Leeds Bradford Airport seized an estimated 12kg of heroin.
The discovery was made on 26 March as officers inspected luggage that had come off a flight from Islamabad in Pakistan. Mohammed Aslam Khan and Kulwinder Fatima El-Assad were arrested at the airport.
They appeared at Leeds Magistrates Court on Saturday, charged with the importation of a Class A drug.
They did not enter a plea and have been remanded in custody to appear at Leeds Crown Court on 11 April.