The Udon Expo 2026 (Nong Daeng, Udon Thani) is over 95% built and runs 1 November 2026 to 14 March 2027. Organisers estimate 3.6 million visitors and about 32 billion baht in circulating spending. The Udon Thani Chamber of Commerce expects total 2026 tourist arrivals of about 5.5 million. If you run a hotel, restaurant, transport, or shop in Udon Thani, plan stock, staffing and pricing for the late-2026 to early-2027 peak. TAT says it is building linked tour routes, so consider joining local tour packages.