Is there a way to find/track my plane's previous flight?
My current flight has been delayed 9 hours and the plane is nowhere in sight. The airline gives no information besides pushing back the departure date every few hours.
Is there an easy way to determine which flight should be arriving that's delayed so long?
You might be able to work out where the plane that was supposed to operate your service is, but that won't help if they've decided to swap to another aircraft due to a delay...
Flightradar24 allows you to track a plane by it's registration number. You should be able to look up the flight number, and if there is an aircraft assigned to that flight, you should be able to track the previous assignments by the tail number.
This is the screenshot for N583NW which is scheduled to go from Detroit to Fort Lauderdale (DL2002) at 13:15, but is 10 minutes delayed.
We can see the flight previous to this was Orlando to Detroit (DL2460), which actually landed ahead of schedule.