http://businesstravelcoalition.com/c...sis_report.pdf
"AirlineForecasts concludes that if oil prices stay anywhere near $130/barrel, all major legacy airlines will be in default on various debt covenants by the end of 2008 or early 2009. The implication is that several large and small airlines will ultimately end up in bankruptcy, and of those, some will be forced to liquidate."
According to their data, NW and DL are the "least vulnerable" to $132 barrel oil prices. I don't know their methodology.