What is the most convenient way to travel from Chengdu to Huanglong? What are some recommendations for accommodation in Aba?

The most convenient is of course the plane, fly directly to Jiuhuang Airport, and then take a car to Huanglong

You can fly directly to Huanglong Airport, and then take a taxi there, which is very expensive. In addition, you can take a bus from Chengdu to Songpan, and then go there by chartered car or by passing car. The beautiful scenery along the way is not expensive.