ATLANTA (AP) – Hundreds of flights worldwide were canceled by mid-afternoon Sunday, adding to the mounting number of scrubbed flights during the busy Memorial Day holiday weekend. About 1,460 flights had been canceled as of 7 p.m. EDT Sunday, according to flight tracking website FlightAware. That follows more than 2,300 cancellations Friday and another 1,500 on Saturday. Nearly 450 of Sunday’s cancellations involved aircraft scheduled to fly to or from U.S. cities. Delta Air Lines canceled the most flights among major U.S. airlines. Delta said Saturday’s cancellations were because of bad weather and “air traffic control actions.”