London, Feb 25 (IANS) Hollywood star Harrison Ford has been criticised by environmental activists for making unnecessary air trips, following revelations he once made a jet journey to buy a cheeseburger.

The 'Indiana Jones' star began flying when he was 52 and after gaining his licence went on to purchase several aircrafts, which he keeps at Santa Monica Airport in California.

He recently revealed the extent of his love for piloting: 'Learning to fly was a work of art. I'm so passionate about flying I often fly up the coast for a cheeseburger. Flying is like good music; it elevates the spirit and it's an exhilarating freedom.'

But the 67-year-old has come under fire from environment experts over the comments, who are outraged at Ford's airplane journeys for such unnecessary trips, reported imdb.com.

'Flying is a huge source of carbon emissions and making unnecessary journeys by plane can no longer be seen as responsible to our environment,' said Wendy Buckley, environmentalist.

'Stars like Harrison Ford need to embrace the huge opportunity to lead by example in the battle against climate change, reduce their overall lifestyle carbon footprint and carbon offset those unavoidable emissions,' she added.