The International Horticultural Expo 2026 in Udon Thani (Udon Expo 2026) is 95% complete and set to open November 1, 2026. Organizers project 3.6 million visitors generating 32 billion baht in economic circulation during the 5-month event. The Chamber of Commerce targets 5.5 million annual tourists for Udon Thani, positioning it as a major tourism center for northeast Thailand. TAT is coordinating connected travel routes and attractions to maximize economic spillover and establish long-term tourism sustainability.