We recommend checking directly with your airline to confirm their protocol for travelling with medication. Hormone therapy should be no different to any other medication, as long as it is in the original container or packaging with your name and your prescriber information listed.
Some countries may be hostile towards trans, non-binary and gender-diverse people. Before travelling, we recommend checking the law relating to LGBTQ2S+ people in your destination. In some cases you may have to be discreet for your own safety.