Not all rumours. The NWA DC10 in BRU instead of FRA is indeed true ( and sad as the Capt got fired and the F/O resigned ) The AirCharter ( Air France sub ) B727 that ended up in Aqqaba (Jordan) instead of Eilat (Israel) is also true. they really got 'disorientated ", (and were lucky ).
Aerolinas Argentinas in a 747 ,in the 80,s , on a transatlantic flight to Las Palmas , landed in TFS while the airport was still in construction . taxied, turned around and took off again, landed in LPA without saying anything. Constructions workers in TFS talked to the Press the next day. Aerolinas first denied it was them. But specific tyres marks on the (new) runway gave tem up...
But the my favourite is still the Spantax CV990 , full of journalists and Tour operators chiefs, that was bound for Hamburg and landed in Finkenwerder, on the island in the middle of the city in a 1800m runway...in the 70s They made it OK but had to remove everything movable in the a/c including the seats, drain all but 2 tons of fuel to ba able to take off again to HAM.
They manage to do so eventually !
The irony was that it was a flight paid by the airline to re-assure German tourists that it was safe to fly Spantax ( they had just 3 crashes in 2 years )