Nepal Airlines

The airline's mountain airports require specialized landings, and its accident rate of 1.2 per 100,000 flights is 6 times worse than the international average. Only 40% of its pilots have flown more than 3,000 hours, compared to an industry standard of 5,000. Despite the risks, it carries 800,000 passengers annually, but delays average 90 minutes, 30 minutes longer than the worst regional competitor.