Ops, sorry, got off on a tangent and didn't answer your question!
I remember the days that I became a grumpy traveler when flight plans didn't go as planned. I decided that to make traveling "fun" again I had to make a shift in thought. Now, when we leave for the airport, I assume our "travels" are starting. We may not necessarily "fly" that day, but the journey begins. This is also the way I approach it with my kids. So, it may mean that our first excitement is going to be staying in a hotel for a night, or seeing a different airport we haven't been to before due to being re-routed, or my personal fav, getting free tickets for whole other trip by flying tomorrow and not today. People seem to work better with me when I am in a spirit of problem solving. I assume them to be the experts and often ask, "what do you think we should do?"
As far as the kids, novelties are always good for times where they need to be patient. Also, just strolling the airport seems to keep them busy. With a flight so short from Abbotsford to Calgary, you can really use all your novelty efforts in the airport. Often times, the airport is so overstimulating that my kids fall asleep. Don't forget to take along a little treat for yourself for when things get stressful- high quality chocolate, perhaps?!