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The cost of a ride for a roundtrip adult ticket to Udon Thani leaving from Bangkok is around $40.28
Thai Smile does not have Wi-Fi on board their rides.
Thai Smile operates in Udon Thani, Bangkok, Chiang Rai, Ubon Ratchathani, Chiang Mai, Suratthani, Hat Yai, Khon Kaen, Narathiwat, Phuket, Krabi, Mandalay, Vientiane, Luang Prabang, Penang, Siem Reap, Ranong, Yangon, Kuala Lumpur and Phnom Penh
Thai Smile do have toilets on board!
Thai Smile does not have e-tickets so you need to print your tickets