ironically, Google is better at that than CX's Notifly. Just put in CX(xxx) flight number into Google and it will pull up the gate. Google combines the info from flightstats, the airport webpages and CX. Way better than Notifly. If you've got that Google Now app you don't even need to put it in...it usually knows your flight #s in advance (thanks to mining your emails presumably, which is a different debate), and so on the morning of your flight automatically pulls up the flight info for you. Google also usually has the arrival gate.