Vonn had planned to retire at the end of the 2018-19 season, but her plans have changed after she injured herself in a high-speed crash last week.
"I've announced already I'm retiring after this World Cup season, so to miss my favourite stop on the tour is devastating," she said in a YouTube video.
"I'm probably going to have to come back next year and just race Lake Louise."
Vonn, 34, said she hyper-extended a knee, sprained a ligament and suffered a bone bruise in her fall.
"I'm going to be back shortly, probably be able to race in a few weeks," said Vonn, whose 82 career World Cup victories leaves her four short of the all-time record held by Ingemar Stenmark of Sweden.
"That really has nothing to do with me wanting to race in Lake Louise. The whole point of having one last season is to have one last season, to race in every single race one last time."
Vonn has a special affection for Canada. She won the downhill at the 2010 Vancouver Olympics and has 18 career wins at Lake Louise.
Vonn said her latest injury had been tough to deal with emotionally.
"I don't have a lot of fight left in me. I've had a lot of injuries, a lot of setbacks but I'm also not a quitter."
(Reporting by Andrew Both in Cary, North Carolina, editing by Ed Osmond/Peter Rutherford)
(This story has not been edited by Devdiscourse staff and is auto-generated from a syndicated feed.)