The net profit of one of the largest US airlines increased 3.4 times in the last quarter of 2018 and exceeded $1 billion against $299 million last year. Revenues for the quarter increased by 5%, adjusted revenue rose to $10.73 billion, an increase of 7.5%. Revenue per passenger-mile increased by 4%. The total revenue in the field of passenger traffic increased by 7%, in the field of freight - by 5%. At the end of last year, revenue grew by 8%, and net profit - only by 23%. Delta Air expects earnings of 70-90 cents per share in the first quarter of 2019, although market expectations were higher, having set at 93 cents per share. Shares of the company fell during the preliminary bidding by 1.7%. The capitalization of Delta Air has decreased by 20% over the last year.