Ok so it told you that a visa was needed when one wasn't which is far better than saying one isn't when it is. The site does differentiate by airline but in that case says one is when it isn't. And when the traveler goes to get a visa they'd be told one isn't. It still provides accurate info for the travel the OP booked and it is still the requirement of the traveler to obtain the appropriate paperwork. The airline tried to put in a safeguard and it failed which is why they should make a customer service gesture while the responsibility still falls on the traveler.
Originally Posted by
Virginia Emery
Please stop spreading misinformation. I just went through the IATA website as per your instructions, put in a Thai passport holder flying HKG-USA via Canada on Cathay, it told me I needed Canada Visa