When compared to the conventional Wordle rules, the Airportle regulations are very similar. You get a total of six stabs at guessing a three-letter airport code (LHR for London Heathrow, CDG for Paris Charles de Gaulle, and so on). If your guess of a letter in the airport code is correct, the square will turn green. If the letter is present in the code but not in the correct position, it will change to orange; otherwise, it will remain grey.
The airport's identification number must be found in the database maintained by the International Air Transport Association (IATA). While the actual number of IATA codes is unclear, there are exactly 17,576 possible permutations. Airportle is difficult if you have no interest in airports, which is most people.