Delta Air Lines closed out the year by doubling its quarterly profit as travel demand, particularly for international trips, helped drive record revenue in 2023. CEO Ed Bastian said continued strong travel demand could boost earnings this year.The airline on Friday forecast adjusted earnings per share of between $6 and $7 in 2024, compared with $6.25 a share last year."Business is going great. Just go to any airport," Bastian told CNBC in an interview.Delta said it expects revenue in the first quarter of 20 ...