I noticed this question was tagged fr (IATA code for Ryanair), and assumed that was an agreed-upon practice (like tagging airport-specific questions with IATA 3-letter airport codes). I went ahead and tagged this one with wn only to notice afterwards that it had already been tagged southwest-airlines, which got me wondering what kind of tags should we use...
Arguably it would be more readable to use tags like ryanair and finnair instead of fr and ay, but I guess the codes would work fine too. What do you think?