Do the math...
Elsewhere it was posted that an MD80 burns 935 gal/hr.
Oil at $130 + $30/bbl refining is a effective price of $160/bbl.
Based on other posting, 1 bbl = 40gal of Jet fuel.
So that $130 bbl = $4/gal
My flight DFW-SAN is 3hrs including taxi time.
3*935 = 2805 gallons, divided by 142pax on a full flight is just under 20gallons per pax or $80 in fuel.
If fuel is 30% of their costs as AMR has said, then it costs $267 to fly me.
If occupancy is 85%, it's $310.
Double that and anything less R/T means it's a flight losing money.
-----Burton