DELTA AIR LINES, INC. (DAL) › Cost of RevenueDELTA AIR LINES, INC. (DAL) — Cost of RevenueAnnual figures by fiscal year, from SEC filings.No annual Cost of Revenue data is available for this company yet.Other metrics: RevenueGross ProfitOperating IncomeNet IncomeEPS (Diluted)Total AssetsTotal LiabilitiesShareholders' EquityCash & EquivalentsOperating Cash FlowCapital ExpendituresShares OutstandingDividends Per Share