In what city does and airline with more than $1 billion in annual revenue have its headquarters?
Delta Air Lines Delta Air Lines, Inc. ("Delta"; ) is a major American airline, with its headquarters and largest hub at Hartsfield–Jackson Atlanta International Airport in Atlanta, Georgia. The airline along with its subsidiaries and regional affiliates operate over 5,400 flights daily and serve an extensive domestic and international network that includes 319 destinations in 54 countries on six continents, as of October 2016. Delta is one of the four founding members of the SkyTeam airline alliance, and operates joint ventures with Air France-KLM, Alitalia, Korean Air, China Eastern Airlines, Virgin Atlantic, and Virgin Australia. Regional service is operated under the brand name Delta Connection.
Philippine Airlines Philippine Airlines (PAL), a trade name of PAL Holdings, Inc. (PSE: PAL), also known historically (until 1970) as Philippine Air Lines, is the flag carrier of the Philippines. Headquartered at the PNB Financial Center in Pasay City, the airline was founded in 1941 and is the first and oldest commercial airline in Asia operating under its original name. Out of its hubs at Ninoy Aquino International Airport of Manila, Clark International Airport of Angeles and Mactan-Cebu International Airport of Cebu, Philippine Airlines serves 31 destinations in the Philippines and 41 overseas destinations in Southeast Asia, East Asia, Middle East, Oceania, North America and Europe.