Jet Blue's airline code is B6. This unique airline code has been assigned by the International Air Transport Association to Jet Blue and to around 260 of the world's airlines. The designator codes follow the format of two alphanumeric characters.
The codes uniquely identify each airline under the association and eases tracking of airline operations and key information, such as passenger and cargo traffic and baggage tagging, among others. Aside from designating airline codes, the association is also responsible for the three-letter location identifiers assigned uniquely to each airport. It is also involved in helping and supporting the aviation community in creating policies for the betterment of the industry.