Airport authorities said Wednesday night they expect scheduled air travel in and out of Grantley Adams International Airport (GAIA) to return to normal by Thursday morning after all flights coming in from the United States were grounded because of a computer system outage.The airport’s chief executive officer Hadley Bourne said while the situation on Wednesday morning caused some disruption to incoming and outgoing flights during the early part of the day, by late afternoon the two carriers bringing travellers from the US – American Airlines and JetBlue – were resuming operations.He said about 600 passengers were impacted by the delays in Barbados.“The afternoon flights that had been delayed have arrived and the flights that were here are departing and we should be back on schedule by tomorrow,” Bourne said in an interview with Barbados TODAY.“Jet Blue this afternoon could be delayed by an hour. American [Airlines] may be a bit longer. We don’t have a specific time for its departure out of the US, but we could add four hours to whenever it departs.”