Somewhat similar to Flight Radar is uk.flightaware.com.
Pick an airport/airline/city etc and it shows you the relevant live info. But you can then also track where a particular aircraft came in from by clicking the "track inbound plane" link.
Example rabbithole:
EK89 from Dubai DXB to Geneva GVA
uk.flightaware.com/live/flight/UAE89/history/20190613/0430Z/OMDB/LSGG
Before that route, it was on a Vienna VIE to Dubai DXB leg
uk.flightaware.com/live/flight/UAE126/history/20190612/2055Z/LOWW/OMDB
And before that, it was DXB - VIE
And before that, randomly, it came from Malé MLE - DXB!
And so on.
It's nerdily interesting to see where more short haul jets have been zipping to/from, rather than the long-haul single daily services, but even that is quite interesting if they are e.g. doing repositioning flights.