Airlines dataset

1. Delta Air Lines
Delta Air Lines, based in Atlanta, Georgia, is one of the largest and oldest airlines in the world. Delta operates a vast domestic and international network, serving over 300 destinations in more than 50 countries. Known for its reliability and extensive SkyMiles loyalty program, Delta offers multiple cabin classes including Delta One (business/first class on international and transcontinental flights), Delta Premium Select (premium economy), Delta Comfort+ (extra legroom economy), and Main Cabin (economy).

2. American Airlines
American Airlines, headquartered in Fort Worth, Texas, is another major airline with a comprehensive route network. It serves nearly 350 destinations in more than 50 countries. The airline's frequent flyer program is AAdvantage. American Airlines offers a range of classes such as Flagship First and Flagship Business on long-haul international flights, Domestic First Class, Premium Economy, Main Cabin Extra (extra legroom economy), and Main Cabin.

3. United Airlines
Based in Chicago, Illinois, United Airlines is one of the largest carriers in the world by number of destinations served. United is a founding member of the Star Alliance and operates hubs in several major U.S. cities. Its MileagePlus program is popular among frequent flyers. United offers Polaris (international business class), United First (domestic first class), Premium Plus (premium economy), Economy Plus (extra legroom economy), and Economy.

4. Southwest Airlines
Southwest Airlines, headquartered in Dallas, Texas, is known for its low-cost business model and point-to-point routing. It primarily operates within the United States and to some international destinations in Mexico, Central America, and the Caribbean. Southwest does not offer traditional seat classes but provides an all-economy service with benefits such as no change fees and two free checked bags. Its Rapid Rewards program is highly regarded among budget travelers.

5. JetBlue Airways
JetBlue Airways, based in New York City, is a low-cost carrier known for its high-quality service and in-flight entertainment. It serves destinations in the United States, Caribbean, and Latin America. JetBlue offers classes such as Mint (premium class on select routes), Even More Space (extra legroom economy), and Core (standard economy). Its TrueBlue loyalty program is popular among passengers seeking flexible rewards.

1. 达美航空
达美航空，总部位于佐治亚州亚特兰大，是全球最大且历史最悠久的航空公司之一。达美航空运营着一个庞大的国内外网络，服务于超过50个国家的300多个目的地。以其可靠性及广泛的SkyMiles忠诚度计划而闻名，达美航空提供多个客舱等级，包括Delta One（国际和跨大陆航班上的商务/头等舱）、Delta Premium Select（高端经济舱）、Delta Comfort+（额外腿部空间经济舱）和主舱（经济舱）。

2. 美国航空
美国航空，总部位于德克萨斯州沃斯堡，是一家具有全面航线网络的另一家主要航空公司。它服务于超过50个国家的近350个目的地。该航空公司的常旅客计划为AAdvantage。美国航空提供一系列舱位，如长距离国际航班的旗舰头等舱和旗舰商务舱、国内头等舱、高端经济舱、主舱额外（额外腿部空间经济舱）和主舱。

3. 联合航空
联合航空，总部位于伊利诺伊州芝加哥，按服务目的地数量计算，是全球最大的航空公司之一。联合航空是星空联盟的创始成员，并在美国多个主要城市设有枢纽。其里程奖励计划MileagePlus深受常旅客喜爱。联合航空提供极光（国际商务舱）、联合头等（国内头等舱）、高端经济舱、经济舱额外（额外腿部空间经济舱）和经济舱。

4. 西南航空
西南航空，总部位于德克萨斯州达拉斯，以其低成本商业模式和点到点航线而闻名。它主要在美国运营，并飞往墨西哥、中美洲和加勒比海的一些国际目的地。西南航空不提供传统的座位等级，但提供全经济舱服务，并享有如无变更费和两件免费托运行李等福利。其快速积分计划Rapid Rewards在预算旅行者中颇受欢迎。

5. 美国捷蓝航空
美国捷蓝航空，总部位于纽约市，是一家以高质量服务和机上娱乐著称的低成本航空公司。它服务于美国、加勒比海和拉丁美洲的目的地。捷蓝航空提供如Mint（选定航线的头等舱）、Even More Space（额外腿部空间经济舱）和Core（标准经济舱）等舱位。其TrueBlue忠诚度计划深受寻求灵活奖励的乘客喜爱。