"On route to" is a commonly used phrase that refers to the act of going towards a destination. It is often used to indicate progress, movement or about a journey. However, there are many other phrases and words that can be used as synonyms for this term, such as en route to, heading towards, making way for, bound for, journeying, traversing, traveling toward, embarking upon, advancing to, progressing towards, and so on. These synonyms provide variety and help to avoid repetition when writing, thus making the language more engaging and enjoyable to read.