Ms, Mr or Mx? United Airlines first to offer non-binary gender booking options

United is now the first US airline to give customers non-binary gender options while booking their flights, the carrier announced Friday.

"United is excited to share with our customers, whether they identify along the binary of male or female or not, that we are taking the steps to exhibit our care for them while also providing additional employee training to make us even more welcoming for all customers and employees," United's Chief Customer Officer Toby Enqvist said in a statement.

The airline has worked with LGBTQ organisations The Human Rights Campaign and The Trevor Project on training employees in conjunction with these updates. Such training includes the use of preferred pronouns.

"By providing non-binary gender selection for ticketing and the gender-inclusive honorific 'Mx' in user profiles, United Airlines is taking an important step forward for non-binary inclusion," Beck Bailey, acting director of the Workplace Equality Program at the Human Rights Campaign, added in the same statement.

Amit Paley, CEO & Executive Director of The Trevor Project, a national organisation geared toward crisis and suicide prevention efforts for LGBTQ youth, said in the statement: "We are thrilled to bring Trevor's expertise on the mental health of LGBTQ people to United to ensure its employees maintain safe and inclusive spaces for LGBTQ employees and guests."

United's announcement comes after two big trade groups - Airlines for America in the USA and the global International Air Transport Association - recently approved a new international best-practices standard that suggests accommodation for travellers using "non-binary IDs."

The suggested standard would create an option for "unspecified" or "undisclosed" for passengers booking tickets. That option would be in addition to the options for "male" or "female."

This standard was said to become effective June 1, but it was up to individual airlines to make the option available to their booking platforms.

The nation's five biggest US airlines - American, Delta, United, Southwest and Alaska airlines - all previously said that they plan to implement the trade groups' suggestion.