Translation of sterile in Spanish

The connecting flight to Phuket was fully booked, and the connection to Krabi had five empty seats. The problem was that the boarding began in ten minutes and I did not even have a ticket.
I will see if programmer can do it easily or not. Personally I don't need it. We use Facebook for marketing tool. Facebook uses a lot of short messages to communicated with users and fans. I forgot the exact name.
I have been studying Hungarian for one month. I also speak English, German and Latin. Hungarian would be my fourth language, and it gives me headache. I still can not say anything, not even one word.