Oh, Air North unveiled another one, already departing in a few days:

March 14 YOW to YXY: CAD 370
March 22 YXY to YOW: CAD 319
These are nonstop, which is unusual for this route. Price includes 2 checked bags, a meal, softdrinks - and zero change fee!

Shorter flights:
YVR to YLW for just CAD 89!
March 22, April 19, 23

YLW to YVR for CAD 94
April 16, 23, 30