Getting Here: Air
The nearest airport to Jaisalmer is Jodhpur, just about 300 kilometres away.
It has direct and stopover flights from Delhi, Mumbai, Pune, Bengaluru, Bangkok, Colombo, Doha, Genova, Dubai, Hongkong, Jakarta, London, Paris, Singapore, Tokyo, Vienna, Aizawl, Dehradun, Hyderabad, Kochi, Mangalore, Tirupati, Port Blair and Leh.
The journey thereafter is all but five hours and there are quite a few ways of going about it. You can rent a cab straight from the airport itself, share a cab, hitch a ride, take a bus or hop on a train.
Compare flight deals to Jodhpur here: http://www.skyscanner.co.in/transport/flights/in/jdh/140213/140217/cheapest-flights-from-india-to-jodhpur-in-february-2014.html?rtn=1