Chao Phraya Express Boat is a public boat service operating along the Chao Phraya River in Bangkok. It is a very useful means of public transportation in Bangkok allowing travelers to commute in the central part of the city and use the boats for sightseeing, as a big part of Bangkok's top attractions can be found by the river. Discover all Chao Phraya Express Boat lines, the route map, tickets, and the latest timetable.
Chao Phraya Express Boat Routes
There are 5 Chao Phraya Express Boat routes operating on the Chao Phraya River in Bangkok:
- Blue Flag
- Orange Flag
- Yellow Flag
- Green Yellow Flag
- Red Flag
Blue Flag Boat, better known as Chao Phraya Tourist Boat, is a tourist boat service running from Phra Arthit Pier to Sathorn Pier and Asiatique Pier (in later hours only). This boat route connects the touristy district of Khao San Road with famous attractions along the Chao Phraya River, such as the Grand Palace and Wat Phra Kaew, Wat Pho, Wat Arun, Chinatown, ICONSIAM, and Asiatique the Riverfront.
Orange Flag Boat is the most affordable Chao Phraya Express Boat service, running between Nonthaburi Pier (N30) and Wat Rajsingkorn Pier (S3). The Orange Flag boat costs less and is a good alternative to the pricier tourist boat.
Yellow Flag Boat is the express service running from Nonthaburi Pier (N30) to Sathorn Pier (Central). Previously, these boats were operating during rush hour only. However, now they also operate at the daytime, when they change the Orange Flag Boat, with several additional stops made along the route.
Green Yellow Flag Boat is the longest route, connecting Pakkret Pier (N33) with Sathorn Pier (Central). These boats are even less frequent than Yellow Flag boats and operate on weekdays and during rush hour only.
Red Flag Boat is an express route from Nonthaburi Pier (N30) to Sathorn Pier (Central) running on weekdays, during the morning rush hour, and in one direction only.
Chao Phraya Express Boat Route Map
The map of all Chao Phraya Express Boat routes with all the stops along the routes and other boat services available at each pier. If you have no plans to explore the suburbs of the Thai capital city, you can skip to the piers in central Bangkok.
Urban
Urban Metro
Not in use
Urban
Urban Metro
Urban
Only peak hours
Only peak hours
Urban
Urban Metro
City Urban
Only peak hours
The full Chao Phraya River pier map can be found here: Bangkok River Pier Map.
Chao Phraya Express Boat Ticket Price
Chao Phraya Express Boat ticket price depends on the route and, starting from 1 May 2026, is the following:
- Blue Flag - Chao Phraya Tourist Boat fare is 150 THB for a one-day pass or 40 THB for a single trip.
- Orange Flag ticket price is 18 THB for a single trip.
- Yellow Flag Boat fare is 23 THB for a single trip.
- Green Yellow Flag Boat ticket price depends on the distance and is 16, 23, or 35 THB for a single trip.
- Red Flag boat fare is 32 THB for a single trip.
If you are planning to use the tourist boat several times a day, get a Chao Phraya Tourist Boat Day Pass. The ticket allows unlimited traveling between the most popular attractions in the city and saves lots of time.
Ticket Counters
Boat tickets can be purchased at the desk of Chao Phraya Express Boat found at the passenger piers along the route. At the main piers, such as Sathorn Pier, you can find a ticket counter like seen below.
If there is no ticket desk at the pier, you can normally buy a ticket on board the boat.
Chao Phraya Express Boat Schedule
The Chao Phraya Express Boat schedule varies by the line.
Blue Flag Boat
Blue Flag - Chao Phraya Tourist Boat operates daily. Boat departures are scheduled from 08:30 to 19:45, with a frequency of approximately every 30 minutes.
For a detailed boat departure schedule, check out the Blue Flag Boat timetable.
Orange Flag Boat
The Orange Flag Boat operates on weekdays from 06:00 to 07:45 and from 15:40 to 18:10.
Starting from 30 March 2026, the Orange Flag Boat is changed by the daytime Yellow Flag Boat between 08:10 and 15:40 on weekdays and all day on weekends and public holidays.
For a detailed boat departure schedule, check out the Orange Flag Boat timetable.
Yellow Flag Boat
The original Yellow Flag Boat operates Monday–Friday from 06:00 to 08:05 in the morning and from 17:15 to 19:05 in the evening, with a frequency of every 15 to 60 minutes during the hours of operation.
Starting from 30 March 2026, the daytime Yellow Flag Boat operates from 08:10 to 15:40 on weekdays and from 07:30 to 17:45 on weekends and public holidays (with additional stops during these hours).
For a detailed boat departure schedule, check out the Yellow Flag Boat timetable.
Green-Yellow Flag Boat
Green-Yellow Flag Boat operates Monday–Friday from 06:00 to 07:50 in the morning and from 16:00 to 17:45 in the afternoon. Expected frequency is every 15 to 30 minutes.
For a detailed boat departure schedule, check out the Green-Yellow Flag Boat timetable.
Red Flag Boat
Red Flag Boat operates Monday–Friday from 06:50 to 07:40 in the morning. The expected frequency is every 15 to 20 minutes.
For a detailed boat departure schedule, check out the Red Flag Boat timetable.
Bangkok Boat Travel Tips
The air-conditioned Thai Smile Boat is a good alternative for travelers looking for a more comfortable and environmentally friendly service to explore the Chao Phraya River. If you will be using the electric boat and the electric bus of the same company (Thai Smile Bus) several times a day, consider getting a Thai Go Day Pass, which allows unlimited traveling on 3 boat routes and all Thai Smile Bus routes for 1, 2, or 3 days.
As traffic in the city center is often jammed, public boats can be used as a reliable way to get to the most popular Bangkok river cruise departure points on time.