Delta Air Lines Inc. said fare revenue didn’t climb as much as expected during the holiday travel season, fanning concerns that major carriers will struggle to maintain profits as lower fuel prices lead customers to expect cheaper flights. Shares in the second-biggest U.S. airline by traffic were on track for their worst day in more than six years on Thursday after the airline said it raised fares at a slower pace in December. Delta shares were off 8.1% at $46.04 on Thursday afternoon, their biggest percentage drop since...

Source: Wall Street Journal January 03, 2019 16:13 UTC