I suspect you’ll get a lot more responses from girls that flew domestically. I’m one of them. The gender marker on my ID is non-binary. I’m trans. I dress casual – in comfy female clothes. I blend in pretty well and have never had a problem. Of course I haven’t traveled to any places domestically or internationally where I would be unwelcome. I never will. That still leaves thousands of desirable places to visit. I plan to visit as many of them as I can.