Public buses in Bangkok are mainly operated by the governmental Bangkok Mass Transit Authority (BMTA) and private operator Thai Smile Group (also called Thai Smile Bus). Discover a detailed guide to the Thai Smile Bus service in Bangkok with the main bus routes, route map, fare rates, and ticket options for using the bus in Bangkok.

Thai Smile Bus service is operated by the company Thai Smile Group, which is the largest private operator of public buses in Bangkok. The company was established in 2020 and jointly invested with 8 original private bus companies with licenses to operate public transport routes.
Thai Smile Bus Routes in Bangkok
Thai Smile Group currently operates more than 120 bus routes in Bangkok. Some of the most useful bus routes of the electric bus are the following:
Bus route 1-1 (29): Bang Khen - Hua Lamphong (bus for traveling between Chatuchak and Hua Lamphong Railway Station)
Bus route 1-17 (187): Khlong 3 Village - Victory Monument (slightly cheaper option than the A2 bus for getting from Victory Monument to Don Mueang Airport or vice versa)
Bus route 1-18E (504E): Rangsit - Bang Rak (cheaper alternative than the A3 bus for getting from Don Mueang Airport to Pratunam or Silom)
Bus route 1-24E (538E): Thaniyaburi - Priest Hospital (bus for traveling from Phaya Thai or Victory Monument to Dream World)
Bus route 1-39 (71): Siam Park - Khlong Toei (bus passing on part of Sukhumvit Road and going all the way to Siam Amazing Park)
Bus route 1-45 (115): Siam Park - Bang Rak (bus going directly from Silom to Siam Amazing Park)
Bus route 1-56 (517): SUT - Mo Chit 2 (bus convenient for travelers who stay in the Lat Krabang and Suvarnabhumi areas and want to go to Mochit Bus Terminal)
Bus route 1-63: Patthavikorn - Suan Luang Rama 8 (bus for getting from Khao San Road to MBK or Victory Monument)
Bus route 1-64: Safari World - Nawalan (bus for getting from MRT Pink Line Khu Bon station to Safari World)
Bus route 2-42 (44): Khlong Chan Housing - Tha Tien (bus for getting from Khao San Road to Chatuchak Weekend Market)
Bus route 3-1 (2): Pak Nam - Saphan Phut Pier (bus for getting from Khao San Road to Pratunam, Sukhumvit, or even the Erawan Museum; also can be used in the opposite direction for getting from Sukhumvit or Pratunam to the Grand Palace and other attractions in Bangkok Old Town)
Bus route 3-13 (507): Samrong - Southern Bus Terminal (bus for getting directly from Sai Tai Mai Bus Terminal to Khao San Road and Chinatown or vice versa)
Bus route 3-35 (1): Central Rama 3 - Tha Tien (bus for getting to Bangkok Old Town from Chinatown, Silom, and various destinations along the eastern bank of the Chao Phraya River, such as Asiatique The Riverfront)
Bus route 3-53: MRT Hua Mak - Giant Swing (bus for getting from Sukhumvit areas Nana and Asok to Chinatown and Giant Swing)
Bus route 3-8 (38): Ramkhamhaeng University 2 - Victory Monument (bus for getting from Victory Monument to Ekkamai Bus Terminal and other destinations along Sukhumvit Road)
Bus route 4-1 (6): Phra Pradaeng Pier - Charoen Nakhon Road - Bang Lamphu (bus for getting from Khao San Road to ICONSIAM and other Riverside destinations along the western bank of the Chao Phraya River)
Bus route 4-13 (75): Phutthabucha - Hua Lamphong (bus for getting from Hua Lamphong Area to Asiatique)
Bus route 4-3 (17): Phra Pradaeng - Victory Monument (bus for getting from Pratunam and Siam areas to Asiatique)
Bus route 4-38 (28): Southern Bus Terminal - Changrakasem Rajabhat University (bus for getting to Sai Tai Mai Bus Terminal from Chatuchak and Victory Monument)
Bus route 4-39 (40): Southern Bus Terminal - Ekkamai Bus Terminal (direct bus connection between the eastern and southern bus stations in Bangkok)
Bus route 4-41 (57): Taling Chan - Thonburi Circle (bus for traveling between Taling Chan Floating Market and Wat Arun or Khlong San station of the Gold Line Train near ICONSIAM)
Bus route 4-47 (89): Southern Bus Terminal - Rajamangala University (bus for getting from Sai Tai Mai Bus Terminal to ICONSIAM)
Bus route 4-51 (124): Salaya - Sanam Luang (bus for getting from Sai Tai Mai Bus Terminal to Bangkok Old Town)
Bus route 4-53 (149): Borommaratchachonnani - Ekkamai Bus Terminal (another bus option for traveling between Sai Tai Mai Bus Terminal and ICONSIAM or Ekkamai)
Bus route 4-61 (515): Central Salaya - Victory Monument (bus for getting to Sai Tai Mai Bus Terminal from Victory Monument)
Bus route 4-68: Suan Phak Bus Terminal - Thanon Tok (bus for getting from Khao San Road to Lumpini Park or Patpong)
Bus route S2 (554): Rangsit - Ram Intra - Suvarnabhumi (public bus that can be used for traveling between Bangkok airports)
Bus route S3 (559): Rangsit - Siam Park - Suvarnabhumi (bus for getting directly from Suvarnabhumi Airport to the amusement parks Siam Amazing Park and Dream World)
Bus route S5 (550): Happyland - Suvarnabhumi Airport (bus for getting from Suvarnabhumi Airport to the popular places near the airport, such as The Paseo Lat Krabang and Robinson Lifestyle Lat Krabang)
Bus route S6 (555): Krung Thep Aphiwat - Suvarnabhumi Airport (bus for getting directly from Suvarnabhumi Airport to Mochit Bus Terminal or Krung Thep Aphiwat Central Terminal)
Bus route S7 (558): Suvarnabhumi Airport - Keha Rattanaburi (bus for getting from Suvarnabhumi Bus Terminal to Mega Bangna or Central Bangna shopping malls)
A full list of Bangkok bus routes operated by Thai Smile Group can be found here: Thai Smile Group Routes (Thai language only).
Traveling on all the listed Thai Smile Bus routes is covered by Thai Go Day Pass.
Bangkok Thai Smile Bus Route Map
As Bangkok city is huge and there are many public bus routes connecting different corners of the metropolis, you will not find a unified Bangkok bus map with all the routes laid out on one sheet of paper.
However, to find your way to travel from your location to the desired destination by public bus, you can use one of the applications with a Bangkok Thai Smile Bus map.
For detailed information about the most popular map apps and route maps at the bus stops, explore the Bangkok bus map.
Thai Smile Bus Electric Buses
Electric buses of the Thai Smile Group can be recognized by the different type of dark blue buses that also normally have a Thai Smile Bus logo on the side. They are also using the new Bangkok bus route numbering in the format Z-NN, where Z is the zone number (from 1 to 4) and NN is the new route number. However, the old bus route number without a zone is usually also displayed on the bus, as the route corresponds with the route previously operated by the governmental BMTA.

Bangkok Thai Smile Bus Ticket & Fare
The fare for the electric air-conditioned bus, operated by Thai Smile Group, depends on the distance traveled and is the following:
- 15 THB: not more than 4 km
- 20 THB: from 4 to 16 km
- 25 THB: more than 16 km
An additional fee of 2 THB is charged when taking the expressway.
In case of taking the bus to or from Suvarnabhumi Airport, an additional fee of 10 THB is charged.
If you will be using the electric bus and boat service several times a day, get Thai Go Day Pass that covers all Thai Smile Bus routes as well as Thai Smile Boat routes. You can choose from 1-day, 2-day, and 3-day passes.
For more details about the bus ticket price and ticket options, explore the Bangkok bus fare & tickets.