Hi, I am planning a trip to Burma /Myanmar in November 2013. I have some basic questions. Is it cheaper to book the flight a few weeks before hand for example should I book it in October. Also how long is the flight. Is it 20 hours. I am not sure. I have seen that Singapore Airlines are reasonably priced. I don't want to travel to cheaply and have a terrible journey. I am travelling from London Heathrow. Any advice would be greatly appreciated.