20-inch suitcase, how to take the airport bus, don't want to put it under the car, and take a 4-year-old child to buy a ticket?

Generally speaking, a 20-inch suitcase can be put on the luggage rack of an airport bus, but the specific regulations may be different because of the different routes of the airport and the bus. If you don't want to put your luggage under the car, you can try the following methods:

1. Put the luggage on the rack of the bus. Most airport buses have enough space for luggage. You can put the 20-inch suitcase on the rack. If the luggage rack is full, you can ask the waiter for help. They may help you put your luggage in other places, such as the locker in the car or the luggage compartment under the car.

2. Buy children's tickets. If your child is under 1.2m, you can generally buy a child ticket. Children's tickets are usually cheaper than adult tickets. You can ask the waiter of the airport bus for the specific fare and the way for children to buy tickets.

In short, before taking the airport bus, it is best to know the specific regulations and ticket purchase methods of the airport bus in advance, so that you can complete your journey more smoothly.