Per USA Today:
HELSINKI (AP) – Would you board flight 666 to HEL on Friday the 13th?
For superstitious travelers, that might be tempting fate. But Finnair passengers on AY666 to Helsinki – which has the 3 letter designation HEL – don’t seem too bothered. Friday’s flight is almost full.
Totally pointless? Yes. Cute “slow news day” story? You betcha!