Yeah, I've gone across the border a couple times a year with bikes for the past few years, both land and air, as do some of my Canadian coworkers.
So long as its in your possession, I doubt they'll say anything. Most interest I've ever encountered was walking out of YYZ, and customs asking if it was new or used. A remark of used and they lost all interest
Only time I've heard of any issues was when a coworker shipoed his bike home to BC from Detroit, and they hit him pretty hard (nice MTB). That was shipping via mail tho.