I just booked two domestic flights within Vietnam using JustFly. It was super easy. I had looked on some other booking sites for these flights (DaNang to Nha Trang and Nha Trang to Ho Chi Minh City). When I got to the final page to check out, the flight would be twice as much. I still don't understand why. This never happened with JustFly. The prices were clear as was the baggage allowance. I was very pleased. Thank you.