Originally Posted by sadiqhassan
In my experience, the "flagship" / most popular / most prestigous long haul route is generally flight number 1/2/100/101.
Examples: QR001, EK001, GF001 to Heathrow, VS001 to Newark and others
Indeed, LHR-JFK on Concorde was flight BA1. JFK-LHR on Concorde was flight BA2.