For reference, orbital flight requires 17,400 mph (28,000 km/h) Suborbital flight only requires 3,700 mph (6,000 km/h) Highly recommend playing kerbal space p

For reference, orbital flight requires 17,400 mph (28,000 km/h) Suborbital flight only requires 3,700 mph (6,000 km/h) Highly recommend playing kerbal space program if you'd like to get a better intuitive understanding of the difference: suborbital flights are your second or third attempt - pretty easy, orbital flight will probably take you a dozen flights or so to figure out.