Hi Alison
Dave may know of a better, or different one, I use
WWW.flightradar24.com with this on your laptop or phone, I was able to check the 'Live' status of my sons plane going to and returning from Dalaman, it told me height speed and map location, as I live only 10 miles from Manchester airport, I set off when this told me they were on approach.....
No waiting,,, the app for Android is free unless you want the Pro version, but on your laptop its a free website..
Enjoy Steve