Welling is located at 35°52'38" North, 94°54'2" West (35.877500, -94.900556).
According to the United States Census Bureau, the city has a total area of 29.57 mi2 (76.58 km2). 29.57 mi2 (76.58 km2) of it is land and none of the area is covered by water.
Welling is located in the Central Standard Time (CST) timezone, GMT-06:00. It observes Daylight Saving Time (DST).