Virgin America and Alaska Airlines are the greenest US airlines according to Greenopia.com’s 2013 ranking of US airlines on the basis of their eco-friendliness.
Virgin’s high rank is mainly because, with an average aircraft age of just 3 years, it has the youngest average fleet among US airlines. The latest aircraft use efficient engines that reduce carbon emissions.
The airline has also installed wing tip extensions (winglets) on its aircraft to further maximize fuel efficiency. Virgin also has a very high in-flight waste recycling rate of around 47%.
Alaska Airlines is the second greenest airline on the list. The other airlines among top 5 are United – moving toward higher efficiency split scimitar winglets – (3rd place), JetBlue (4th place) and Delta (5th place).