Flying start is a phrase that is often used to describe a successful beginning. However, there are several alternative phrases that can be used to convey the same meaning. One option is "head start," which implies that someone has started ahead of the rest and has an advantage. Another synonym for flying start is "jump-start," which suggests that someone has been propelled into action. The phrase "running start" can also be used to convey a similar meaning of starting something with a burst of energy. Finally, "brisk start" may be used to describe a start that is sharp and energetic. Whatever your preference, there are several ways to describe the beginning of something successful.