Delta Air Lines, Inc. (NYSE:DAL), typically mentioned as simply Delta, may be a major US airline, with its headquarters in Atlanta, Georgia. The airline, alongside its subsidiaries and regional affiliates, operates over 5,400 flights daily and serves an in-depth domestic and international network that has 304 destinations in 52 countries on six continents, as of October 2018.Delta may be a founding member of the SkyTeam airline alliance. Regional service is operated under the name Delta Connection. one among the five remaining legacy carriers, Delta is the sixth-oldest operating airline by foundation date, and therefore the oldest airline still operating within the US . Among predecessors of today’s Delta Airlines, Western Airlines and Northwest Airlines began flying passengers in 1926 and 1927, respectively.