Grand Forks is accessible by two major highways, Interstate 29, which runs north and south, and U.S. Highway 2, which runs east and west. Grand Forks International Airport, located 4.5 miles west of the city, is North Dakota's busiest commercial airport. Northwest Airlines operates daily flights that connect travelers to more than 750 cities worldwide. Amtrak operates daily passenger trains. Interstate bus service is provided by Greyhound and Triangle bus lines.
The Cities Area Transit (CAT) provides bus service to both Grand Forks and East Grand Forks Monday through Saturday. CAT offers a door-to-door senior ride service for adults 55 and older. Dial-a-Ride service is available for the physically handicapped.