许多理论认为，旅游业的发展是不可持续的，不能保护环境，不能保持经济的活力，不能保护文化。由于旅游业，特别是航空业，正在迅速发展，保护环境和遵守道德标准是有问题的理由。许多公司支持道德行为和标准，以优先考虑环境保护和世界和平的崇高目标(Dritsakis, 2012)。旅游业将道德的作用,特别是在航空部门没有严格的规范,但由航空公司和美国联合航空公司一样,维珍大西洋航空、捷蓝航空、布鲁塞尔航空公司和阿联酋航空公司负责任的行为,处以高度对环境和社会的尊重。伦理在可持续旅游中扮演着重要的角色，这从布鲁塞尔航空公司的二氧化碳补偿项目就可以看出，该项目符合伦理标准。这些项目所遵循的一些道德标准是通过有积极性和经验丰富的员工来实现卓越的旅游和旅游体验。维珍航空(Virgin Atlantic)和捷蓝航空(JetBlue)等航空公司一直致力于尊重东道国社区的价值观和愿望。维珍大西洋甚至有英国注册的慈善机构，名为维珍大西洋基金会(Virgin Atlantic Foundation)，他们还与“我们”(WE)合作，“我们”是一项融合人类的运动(维珍大西洋，2017年)。因此，可持续性项目，尤其是碳减排项目，符合伦理标准(Paek and Chathoth, 2013)。阿联酋航空公司的碳补偿项目包括投资于以保护为基础的旅游开发，如迪拜沙漠保护区(Emirates, 2017)。这表明阿联酋航空公司的项目符合通过保护自然、文化和美学遗产实现旅游发展的道德标准。有关减少碳排放的项目与减少废物和提高能源效率有关，这通常可确保在执行这些项目时遵守道德原则和标准。由于上述航空公司的碳减排项目符合自然资源的有效利用，管理废物，努力消除或减少空气污染证明项目符合伦理标准(加拿大旅游业协会，2017)。为了减少碳排放，航空公司应该支持游客欣赏自然，通过保持道德标准和实践可持续旅游来建设一个更美好的世界。
There are plethoras of theories that suggest that tourism development is unsustainable and do not conserve the environment, maintain a viable economy and protect culture. Since the tourism, especially the airline industry, is expanding at a rapid rate, the preservation of the environment and abide by the ethical standards are under questionable grounds. A multitude of companies exists that supports the ethical behavior and standards to prioritize the lofty goals of environmental preservation and world peace (Dritsakis, 2012). The role of ethics in the tourism sector and most particularly in the airline sector has no rigid codes but it is up to the airline companies like United Airlines, Virgin Atlantic, JetBlue, Brussels Airlines and Emirates Airlines to behave responsibly and impose a high degree of respect for environment and society. Ethics play an important role in sustainable tourism which is evident from the project of CO2 offsetting by Brussels Airlines which is in line with the ethical standards. Some of the ethical standards that these projects are in line with are committing to an excellent travel and tourism experience through motivated and experienced staffs. The airline companies like Virgin Atlantic and JetBlue have been engaged in respecting the values and aspirations of the host communities. Virgin Atlantic even has the UK registered charity named Virgin Atlantic Foundation and they have collaborated with WE, a movement that integrates people (Virgin Atlantic, 2017). Thus, the project of sustainability, especially carbon emission reduction project, is in line with the ethical standards (Paek and Chathoth, 2013). The project by Emirates Airlines as Carbon Offsetting encompasses investment in conservation-based tourism development like the Dubai Desert Conservation Reserve (Emirates, 2017). This shows that the project by Emirates Airlines is in line with ethical standards of achieving tourism development by protecting the natural, cultural and aesthetic heritage. The projects on carbon reduction are associated with the waste reduction and energy efficiency which typically ensures that the ethical principles and standards have been complied to by implementing these projects. Since the carbon reduction projects of the above airlines are in compliance with the efficient use of natural resources, and managing waste and striving to eliminate or minimizing air pollution proves that the projects are in line with the ethical standards (Tourism Industry Association of Canada, 2017). In order to reduce carbon emission, it is important for the airline companies to support the tourists in appreciating the nature and building a better world by maintaining ethical standards and practicing sustainable tourism.