Southwest Airlines Co. (the "Company" or "Southwest") operates Southwest Airlines, a major passenger airline that provides scheduled air transportation in the United States and near-international markets. Southwest commenced service on June 18, 1971, with three Boeing 737 aircraft serving three Texas cities: Dallas, Houston, and San Antonio. At December 31, 2018, Southwest operated a total of 750 Boeing 737 aircraft and served 99 destinations in 40 states, the District of Columbia, the Commonwealth of Puerto Rico, and ten near-international countries: Mexico, Jamaica, The Bahamas, Aruba, Dominican Republic, Costa Rica, Belize, Cuba, the Cayman Islands, and Turks and Caicos.
The Company is continuing its efforts towards its planned inaugural service to Hawaii in 2019, subject to requisite governmental approvals, including approval from the Federal Aviation Administration (the "FAA") for Extended Operations ("ETOPS"), a regulatory requirement to operate between the U.S. mainland and the Hawaiian Islands. The Company has announced its intent to serve Honolulu International Airport, Lihue Airport, Kona International Airport at Keahole, and Kahului Airport from four initial California cities: Oakland, San Diego, San Jose, and Sacramento. In June 2018, the Company ceased service at Bishop International Airport in Flint, Michigan. The Company has further announced its decision to cease service at Benito Juárez Mexico City International Airport, with the last day of service scheduled on March 30, 2019.
Based on the most recent data available from the U.S. Department of Transportation (the "DOT"), as of June 30, 2018, Southwest was the largest domestic air carrier in the United States, as measured by the number of domestic originating passengers boarded.