Jetstar is the latest company to play their part in a growing culture of inclusion and awareness for transgender people.
The low-cost airline will now include X as an option for gender in a customer satisfaction survey, The Australian reported.
The survey asked passengers about their flight experience and offered "do not wish to say" and "X" as options for gender.
However a Jetstar spokesperson told the Australian that the questionnaire did not reflect changes in the airline's policy but rather standards set by the federal government.
"This survey question follows specific standards set by the Australian Government regarding gender, and is consistent with the census and passport applications," the spokesperson said.
"Questions like this are standard across research surveys across Australia and are not unique to Jetstar."
The airline is following in the footsteps of parent company Qantas who recently asked employees to stop using gender-specific words such as "honey", "darling", "guys", and "love".