Delta Air Lines says it’s adding international flights at its Minneapolis-St. Paul hub.The world’s largest airline will introduce daily nonstop flight between Minneapolis-St. Paul and Mexico City International on Dec. 18. The flight, subject to Mexican government approval, will be the first nonstop service operated by any airline between the two cities, Delta says. Delta will use 124-seat Airbus A319 aircraft for the route.

Delta’s nonstop flight between Minneapolis-St. Paul and Paris-Charles De Gaulle will be converted from seasonal to year-round service.The carrier is also expanding its nonstop flight between Minneapolis-St. Paul and London-Heathrow from five days a week to daily service for winter 2010.