Low-cost Air Low-cost air companies create opportunities for people to travel across the borders of countries.Although we need to reduce unnecessary travels, I would still argue that the services provide by low-cost air are beneficial to the public. By taking cheap flights people may go to different countries for tourism, and enrich their experiences of varieties of cultures, thereby expanding their outlooks.Some people are possible to visit some countries to seek a better employment, and earn a higher income.Business owners can probably discovery potential business opportunities to earn more profits by exporting or importing products between different regions.But if price of air tickets rises a lot they will probably lose those opportunities. Meanwhile, some people hold the idea that raising airfaces can reduce the environmental impact which was brought by this industry.A higher price can discourage people to go for travel by air.If the frequency of flights decreases, then the greenhouse gas emissions by air will be reduced accordingly.Other problems associated with air industry, such as noise pollution and environmental destruction by building airport and related facilities, will be mitigated as well. I do not think it is necessary to increase the ticket price, because people ought to have chances to go to other places for tourism and recreation. may people, especially the workers who live in mega cities, are likely live under a huge pressure and always be busy on many kinds of affairs.If they can easily get a cheap flight, they may go farther for taking holidays.For examples, tourists from China can visit some tropical countries to taste local foods, but not spend their holidays on home. In conclusion, my view is that it is not reasonable to restrict low-cost air, because cheap flights bring significant values to people, even though air companies can reduce their environmental impact by technology innovation.