welcome
every traveler either, solo or not has been in your shoes. Is because you are out of your comfort zone.
some hints/thoughts take or leave...
> you remember any of your "firsts"... bike ride, swim, walk,..ect. were you scare then? no different. you make it though then, why not now?
> travel inst anything "new".. only new to you. for now. once you get there and back and if you reflect on how it went and how scared you were you may laugh and will be chomping at the bit for more.
> also, solo travel isnt for everyone. Just like anything else. but you need to try to know if you like it or dont.
> and you will ONLY be SOLO on the plane. If they meet you at the airport, then you wont be solo anymore. And you wont be the ONLY person on the plane either. chances your seat mates will speak english, eat/drink, use the toilet and maybe snore/sleep right next to you while you do the same. Guess what? people outside of the USA do the same.
> for your flight, its up to you, take or leave....
- i always have some snacks. granola/power bar, candy bar and will get some OJ/water after security. They will probably feed you on the plane, but it may take a few hours , so i always have some snacks/water handy.
- if you have some fav earphones, bring them. they may work on the plane entertainment system.
- make sure you have ANY prescriptions, spare glasses/contacts and cleaner on you in the cabin. same with your passport.
- if you like to read, bring a book.
- bodily functions. If you want, use the toilet when you need to and when you dont. when you see them bringing the food/drink cart, use the toilet. chances are after, there will be a line. Same for the "breakfast" before you arrive. There will probably be a line after the food is served. Its up to you and how good you can hold it. when you are on the plane, look for any toilets in front or back. there will be a male/female sign on the ceiling. If its red, its occupied, if green, you are good to go. And then also look on the other side of isle.
> dont drink the water from the lavatory sink.
> ALWAYS keep your seatbelt fastened. they may turn off the sign, but if you haven't paid attention to some flights recently where they had some turbulence and or wind shear, some people died from that. You can keep it somewhat loose, but have it fastened.
> If you need food/water...ask the attendants. they may during the flight bring water through and or they may pass out water bottles.
> toothbrush/paste...if you want, you can brush your teeth on the plane. Some people do and some people wait until they get to the destination airport.
> if you get cold/hot, dress in layers. They may have a pillow/blanket on your seat. Its up to you if you want to use. If there isnt one, again ask an attendant.
> try to have your stuff you need ON YOU BEFORE you board the plane. you will see someone decide to remove their suitcase from above and hold up boarding only to get a sweater or something out of their suitcase. Really, its not like they just happen to just board. Be prepared.
> If you use OTC - over the counter meds, bring them with you or any you think you may need. You wont find any or much on the plane. If you get motion sick, bring something for that.
> stretching. when i use the toilet, i will stretch if/when waiting. Or i will just hang near there to get off my A$$ and move about.
there are others, but you will get by if you have the necessities for what you need/want.
good luck