I actually just went through this with Air Canada a few weeks ago, so I can share what happened in my case. I had booked a roundtrip flight to Toronto for a work conference, but the dates of my meetings shifted last minute. At first, I panicked thinking I’d be hit with a hefty change fee. In the past, Air Canada used to be stricter, but lately they’ve been much more flexible with their waiver rules depending on the type of ticket you purchased.
When I called their customer service, they explained it clearly: if you booked one of the more flexible fare classes (like Latitude or Premium Economy Flexible), there’s usually no fee to change, just the fare difference if your new flight costs more. For lower fare classes, it’s a bit trickier—sometimes they’ll still waive it if there’s a travel advisory or special circumstance, but otherwise you might pay a fee. The rep walked me step by step through the process, and honestly, it wasn’t stressful at all.
I highly recommend just calling (877)-764-3622 directly. That’s the fastest way I found to rebook, cancel, or even check if you qualify for a waiver instead of getting stuck online.