This existed pre-COVID but is more of a thing now. See Half as Interesting - Why Heathrow Airport Had Empty Flights to Nowhere (3 years ago, pre-covid) https://www.youtube.com/watch?v=X8XZriAdB1g

RealLifeLore2 also covered the same topic as the original submission: https://www.youtube.com/watch?v=HR1a_LO4hSk