Find the cheapest Thai Airways International flights on Expedia from Singapore (SIN) to Udon Thani (UTH). Flight ticket prices change frequently based on availability and demand. We send price-drop alerts to make air travel simple and flexible. The lowest one-way fare found on Expedia with Thai Airways International for this route in the past 7 days starts at ฿8,980 for travel on November 17, 2026.
฿8,980 Cheap Thai Airways International flights Singapore (SIN) to Udon Thani (UTH)
Prices were available within the past 7 days and start at ฿8,980 for one-way flights and ฿15,100 for return, for the period specified. Prices and availability are subject to change.