Therere is a website , i am not allowed to put the link here, but if you write in google " Opera nationala bucuresti" you will find among first results, the officual site of the oprera, with all the information about tickets! When you enter the site, in the top of the page, to the right side are two buttons RO EN, if you press the EN button, you'll have the website in english, you can find all you need to know on this website. Hope this is helpfull. Also there on tge website, you can see the schedule of the opera. Have fun!
You can buy tickets online directly on Opera’s website. Select Calendar, then the day and the performance, then you see an option "Buy Tickets". Unfortunately, after that you will have only Romanian version, but it works well if you manage to create an account with “CREEAZA CONT”. Once that you have your account, you select the day of the performance and you have two options to choose your place: automatic and manual. I prefer to use the manual option. Then, once you have selected you place, you proceed to payment by card. The tickets are sent by email to your address and you have to print them and present them at the entrance. I use the online ticketing often and it works very well.
In “Contact” section you will find a phone number and an email address for assistance to buy tickets online.
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