The news comes ahead of the June 30 release of the 19-year-old's Happier Than Ever album, written by Billie and her brother, Finneas.
The ninth stop on her North American tour, Eilish will perform at the Bell Centre on February 15, 2022.
As part of the tour, Eilish is continuing her work with sustainability partner REVERB.
Evenko says Eilish will have a "fan-facing Billie Eilish Action Village" at each show to focus on "climate action and climate justice, and hosting and supporting BIPOC and women-led environmental organizations."
Tickets for the Montreal show of the Happier Than Ever tour will go on sale on May 28 at noon — however, Ticketmaster is offering die-hard fans a "Verified Fan presale," where fans can register to buy tickets on May 23, five days earlier.