Originally Posted by
Rwy in Sight
I hope you are wrong on your forecast. However I think in the US, there are four digit flights and I know some special flights have a letter following the number.
Many European airlines, even before the current rash of ad-hoc and freight-only flights, have had 4-digit flight numbers in their timetables for years.
For example Aeroflot, Air France, BA, Blue Air, Brussels AL, Eurowings, Finnair, Iberia, KLM, Lufthansa, TAP, Turkish, etc - and those are just the ones I can see out of my window.