More recent pro formas seem to show a similar pattern to the 2007 pro forma. I have a pro forma (projection) for 2009 (3 yrs. old instead of 5) that was handed out to investors some time ago. It shows a similar pattern of results for the first year with 1/3/5 roundtrips/wk:
Total operating revenue year one: $99,401,435
Total Operating Expense: $84,527,226
Operating Profit/Loss Before I&T: $14,874,209
The main differences between this 2009 pro forma and the 2007 pro forma were: an increase in fuel prices; starting at a different time of year; and higher prevailing airfares in line with the general airfare increases at the time. It shows an average profit per one-way flight ranging between $12,614 (off peak season, load factor 55%) to $121,704 (during peak season, load factor 94%).
This compares to the earlier 2007 pro forma with an average profit per one-way flight ranging between $15,019 (58% load factor) and $93,178 (81% load factor).
Generally, the pattern is the same for the financial performance on the two pro formas, just adjusted upward in 2009 for higher fuel prices and correspondingly higher air fares. I expect that a current update of the pro forma would show the same pattern because the operational factors are essentially the same.
This is why I keep buying more shares when opportunity knocks, as it has been lately. Started accumulating shares 20 years ago, so I've got a nice pile, but it can always be improved.