Don't get there in jeans or as if you were going on the beach or even going to Miss Beauty Pageant.... Funny but i saw a lot of them during some of my interviews....
Dress in a conservative way. Business attire is a must! If you cant afford a Versace suit, you can still dress nicely :)
REMEMBER THEY ALSO LOOK THE DETAILS
Men should have a tie and well shaved, make sure you look perfect for that day!If you have long hair, tight them. Maybe some will ask you to cut them if you get hired.Make sure you have your hands clean.CLEAN SHOES ARE IMPORTANT!!!
If you have long hair, make sure you tight them. For makeup, dont look like a clown! :) Have a french manicure done if possible, if not, just have clean hands and put some neutral nailpolish on.( Avoid blue or funky colours for that day!) You may be dress to impress but do not exagerate!( i.e mini skirts with 6 inches high heel, not really...)Put some perfume, but not a strong one.CLEAN SHOES ARE IMPORTANT!!!
TIPS
These are just few tips, but they are NOT MANDATORY to follow, it is just to give you an idea...
At the end of your interview they might ask you : do you have any questions? Refrain yourself from asking when you will get an answer from them. Usually they said it at the begining or at the end of your interview, the lenght of time they will get back to you.Remember that you are not the only one that they interview.Maybe it may happens that interviews are conducted for a few days in a row.MAKE SURE THAT YOU THANK THEM FOR THE TIME THEY TOOK TO GIVE YOU AN INTERVIEW.
Depending of the airline, some may invite you right away to go for a medical within the same day.
Expect an answer from the airline within one or 2 weeks ( It may be different, depending of the company).