It means that they are in a short term cash crunch. The only way to raise money is to sell seats for cheap to get people to buy.
So what does it mean when your airline is selling seats for $10 less than we are?
There's no "cash crunch" here, my friend. Our cash position has been steadily growing since the beginning of the year. We're gonna be just fine. Don't start salivating over those C and D concourse gates just yet. Besides, you'd just put more replacement jets on them anyway, I'm sure.