Having just returned to Canada as of Sat. April 4 the border is open to Canadian residents, you must self isolate for 14 days and provide your contact info for health authorities to follow up with you.
Now the Yukon Gov't has just posted that they are stopping visitors to the Yukon BUT residents of Alaska will be able to pass through and have 24 hours to get to Alaska.
The best thing to do is call the border entry point you will be using
to cross into Canada and ask your question as you are going home.
Safe travels!!