First, go to Mo Chit BTS station and Chatuchak Park subway station. Don Mueang Airport is to the north, so cross to the side where the vehicles are going north.
There was a sign that said there was a restroom, so I assumed there would be one.
Local Thais will pee on the side of the road without hesitation.
After a while, the bus comes.
Let’s remember it as the orange bus on A1.
If there is no traffic, it takes about 30 minutes to get there.