The American airline Delta Air Lines has published a report on financial results for the second quarter of this year. Relative to the same period last year, its net profit jumped by 39%, reaching $1.44 billion at the end of the earnings period. Adjusted earnings of $2.35 per share were higher than economists' forecast of $2.28 per share. Revenues reached 12.54 billion dollars, an increase of 6.5% over the year. The company recorded revenue growth per passenger-mile by 1.6%. The volume of revenue from passenger traffic, in general, showed an increase of 8% and amounted to 1.37 billion dollars. Meanwhile, in the freight segment, a decline in revenue was noted by 17% to $186 million.