Two airlines from Southeast Asia are officially among the cleanest in the world. Singapore Airlines and Malaysia Airlines both made the top 20 list. The results come from a Skytrax survey of more than 24 million travelers. Singapore Airlines ranked second, just behind Starlux Airlines of Taiwan. Passengers judged the cleanliness of seats, tables, carpets, and toilets.
How does an airline keep its planes so clean? Singapore's national carrier follows very strict cleaning rules. Its planes go through careful deep cleaning. High-touch surfaces get special coatings that fight germs. Sheets and covers are washed at very high temperatures. The survey also looked at the condition of cabin panels.