The flight (to Japan) wasn't actually banned, it just became unprofitable to run that day. But flights are a time-sensitive thing! Imagine if you ordered a pizz

The flight (to Japan) wasn't actually banned, it just became unprofitable to run that day. But flights are a time-sensitive thing! Imagine if you ordered a pizza and the restaurant called you back and said it wasn't convenient that night because of car trouble, but they'd keep your money and in a few months when it made more sense they'd deliver your pizza. That's ridiculous and you'd have a right to demand your money back.