“Better than expected” is a description that may, on very rare occasions, be applied to the mostly mediocre wine on a long-haul flight. Thursday, however, Delta Air Lines’ investors applied it to the carrier’s latest quarterly earnings instead of its vino. The first US airline to report its performance for the three months through September, Delta topped profit estimates and predicted that demand for luxury travel and climbing airfares will help it maintain higher altitudes through the end of 2025 and ear ...