Travel by jet is a form of transportation that involves flying in an airplane. It is a faster way to get from one place to another than other forms of transportation, such as driving or taking a train. Jet travel is often used for long-distance trips, as it is more efficient and can cover large distances in a relatively short amount of time. The term 'travel by jet' is often used interchangeably with the term 'FLY, ' which has three letters.