The closest major airport to NSU is Tulsa International Airport (TUL). Once you've booked your flight, you will need to make arrangements for Sooner Cab to pick you up at the airport and bring you to NSU. You can call Sooner Cab at +1-918-207-8381 or email email@example.com.
Note: All F-1 international students should arrive in the U.S. no earlier than 30 days before your start date. All students should arrive no later than one day before your scheduled Orientation.