I have used FR24 regularly to check actual flight status -though Flight Aware is also good - but it's also interesting to look up the departures board at the airport where your flight is originating. In any case, planning your time if your flight is delayed inbound does help with managing the frustration and helping reorganize your arrival plans such as advising your car rental company that you will be late in picking up your car or asking your relatives to delay leaving home to reduce their time and car parking fees when meeting you.