UX Week August, San Francisco
The main conference about interface design with good orientation to practical skills. Moreover it is in San Francisco, so you could meet a lot of designers from the Valley. InteractionMarch, Helsinki
Huge designers meetup. There will be speakers from Uber, Thomson Reuters, Google, Airbnb, BBC, MIT Media Lab and other great companies. UX London May, London
Last year program was pretty impressive. You could watch at design from totally different points of view.
More events you could find at the uxdesign.cc