Crossing the border only with citizenship certificate

I had my citizenship ceremony 3 weeks ago, so my passport hasn't arrived yet. I was able to successfully cross the border yesterday from the US into Canada using only the citizenship certificate and my BC ID.

I just wanted to post it here as I saw many previous posts with this question and lots of people saying this wasn't possible. Know that is possible but only for crossing it by car. That wouldn't work if you needed to take a flight.