How Do I Get Through Delta Airlines? Operating since 1929, Delta Airlines is a major airline based in the United States. The airline flies its passengers in and out to over 325 locations worldwide. With a fleet size of 750, more than 5,000 Delta flights take off every day and help its passengers reach their destination. Delta Airlines has always ensured that it is accessible and reachable to each of its passengers. This is why it also has a Delta Airlines customer service phone number . You...