I was scheduled on Icelandair flight FI541 on June 17th of this year, and a couple days before it took off I received a vague text from them saying they had “announced changes to my flight” and I should “please contact the sales office for assistance”. I tried calling them, but after 20 minutes on hold (and paying international calling rates, as I was on vacation overseas) I fell back to Googling the flight number.
That brought me to this site, which reported my flight was still scheduled. I assumed they had bumped the time forward or backwards 5-10 minutes. In fact, they had cancelled the flight completely, which I only found out about at the Paris airport. By that time it was far too late to find another flight to Iceland, and I had to cut my vacation short.
Even the morning of the 17th, FlightAware continued to report the flight was scheduled and due to take off. Why doesn’t FlightAware have accurate data?