Leaving chengdu airport there are no fees and none of the roads have a fee. On the way to the airport a taxi will have a 7rmb toll road fee. It is always cheap to take taxis in Chengdu. When you walk out of domestic terminal two turn left and walk towards taxis. In domestic terminal 1 and international walk out and go towards the right at the end of the taxis lined up you get in. You have to be a little aggressive and move people won't wait in you. We have lived there for 16 years and have learned to love it.