Which travels faster lightning or sound? Lightening travels at the speed of light, which is about 165,000 miles per hour, whereas sound, such as thunder, travels at the speed of sound in dry air, is approximately 1,1 … 27 feet per second or 768 mph (1,236 km/h) at 68°F (20 °C).Look in Wikipedia, under Thunder.hich travels faster lightning or sound? Lightening travels at the speed of light, which is about 165,000 miles per hour, whereas sound, such as thunder, travels at the speed of sound in dry air, is approximately 1,1 … 27 feet per second or 768 mph (1,236 km/h) at 68°F (20 °C). Look in Wikipedia, under Thunder.