Grand Forks International Airport (GFK, KGFK) is served by Delta Air Lines with several daily round trips to Minneapolis-St. Paul International Airport; and Allegiant Air, which operates flights a few times a week to Mesa, Arizona (Phoenix-Gateway), Sanford, Florida (Orlando-Sanford) and Las Vegas, Nevada. A new passenger terminal completed in early 2011 allows more passengers to come through the airport, improves circulation, has a baggage claim and addresses security and safety concerns. The airport was a major distribution center for FedEx, which conducts flights daily within the state and northern Minnesota, until FedEx moved its flight operations to Fargo on October 31, 2016. The airport is one of the busiest in the country, due in large measure to the presence of UND's John D. Odegard School of Aerospace Sciences.