Hi,

I am going to FRA on a last-minute trip and I would like to know if there are any booths somewhere that sell discounted last-minute opera tickets?

Thanks

F

You can buy tickets here

http://www.frankfurt-ticket.de

I'm not sure you can get discounted tickets anywhere. But the cheapest seats are less than 20 Euro and you usually still have a decent view.
I usually just show up about 30 minutes before the opera starts and never had a problem getting a cheap ticket.