Why are flights in the UK so often cheaper than taking the train?

The Guardian - The environmental costs of flying are much higher, and the government subsidises rail travel, so what explains the baffling price difference when travelling domestically?Years ago, airline travel was the preserve of the wealthy, and this may be why it can still come as a surprise when getting on a plane looks like the money-saving choice compared with taking the train.When the personal finance comparison site Finder did some research this summer, it found flying within the UK was