I actually went through this exact situation a few months ago when I had to cancel my Air Canada flight from Toronto to Vancouver. I booked it in a rush, and later realized the dates didn’t work with my work schedule. At first, I tried to manage it through the website—clicked “My Bookings,” hit the cancel button, and it gave me a confirmation. The tricky part was figuring out what I’d actually get back. If your ticket is refundable, you’ll see the refund option, but for non-refundable fares like mine, it turned into a flight credit instead. The credit showed up in my email within a couple of hours and I used it later on another trip.
What saved me time, though, was calling (877)-764-3622 before I made the cancellation final. The agent explained exactly what portion was refundable, how the credit worked, and even walked me through rebooking when I was ready. Honestly, it was way less stressful than guessing through the online system.
So yes, you can cancel yourself online, but if you want clarity on whether you’re getting a refund, credit, or need help rebooking, I’d highly recommend calling that number—it made the whole process smoother for me.