See old Bangkok by Chao Phraya Express Boats
Address: Express Boat and Tourist Boat Piers along the river, information kiosks at Sathorn Pier and Tha Maharaj Pier
Phone: +66 (0) 2 449 3000
Operating Hours: 06:00 - 20:00
Location: Chao Phraya River
Hop on and off the Chao Phraya Express Boats at your own pace, free of traffic congestion and city heat.
To avoid traffic, take the Chao Phraya Express boats. These public boats are differentiated by the colored flags tied to the back end of the vessel – no flag, green, yellow, orange, and blue. Head to the closest pier and look for the river map. Find your destination pier and note the colored triangles marked above it. The colored triangles, which represents flags, show you which boats stop there.
You can pay at the pier or on the boat to conductors with orange shirts. Your best bet will be the orange flag boat which stops at the most popular piers. You can find the official boat route map here.
No flag: week days, rush hours, local, THB 10/12/14 depending on destination
Green flag: week days, rush hours, express, THB 13/20/32 depending on destination
Yellow flag: week days, rush hours, express THB 20/29 depending on destination
Orange flag: daily, all day, express, THB 15
Blue flag: daily, all day, stops on demand, THB 40 single trip, THB 150 one day unlimited