Udon Thani is the busy gateway to upper Isan: a modern city with malls, a big airport and excellent food, surrounded by countryside holding two UNESCO World Heritage Sites — the Bronze Age settlement of Ban Chiang and the sandstone sanctuary of Phu Phrabat. In the cool season, Nong Han lake turns pink with the famous Red Lotus Sea, and from 1 November 2026 to 14 March 2027 the province hosts the Udon Thani International Horticultural Expo. It is also the easiest base for Nong Khai, the Mekong and Laos.
- Best for: history lovers, food lovers, families, travellers heading to Laos
- From Bangkok: about 560 km; roughly 7–8 hours by road, an overnight train, or about an hour’s flight
- Best time: December–February for the Red Lotus Sea and cool weather
- Don’t miss: Ban Chiang, Phu Phrabat, the Red Lotus Sea
Getting there and getting around
Udon Thani International Airport has many daily flights from Bangkok’s Don Mueang and Suvarnabhumi. Trains on the Northeastern Line stop at Udon on the way to Nong Khai, and buses run from Bangkok’s Mo Chit. In the city, Grab, tuk-tuks and songthaews are easy to find. The big sights — Ban Chiang, Phu Phrabat and the lotus lake — are 40–70 km away in different directions, so hire a car or driver, or join a local tour.
Top things to do in Udon Thani
1. Ban Chiang Archaeological Site and National Museum
Inscribed by UNESCO in 1992, Ban Chiang is one of Southeast Asia’s most important prehistoric sites, famous for its red-swirl painted pottery and early bronze. Visit the national museum, then the open excavation pit at Wat Pho Si Nai. Map
2. Phu Phrabat Historical Park
Thailand’s newest cultural World Heritage Site, inscribed in 2024, preserves Dvaravati-era sema boundary stones around strange sandstone outcrops, plus prehistoric rock paintings. Trails link formations such as Hor Nang Usa, a rock “tower” tied to a local love legend. Map
3. Red Lotus Sea, Nong Han Kumphawapi
From roughly December to February, a vast spread of red-pink waterlilies blooms on Nong Han lake. Local boats leave from the pier at dawn, when the flowers are open; by late morning they start to close. Map
4. Udon Thani International Horticultural Expo 2026
Running from 1 November 2026 to 14 March 2027 at the Nong Dae wetland, the expo showcases international gardens, plants and agricultural innovation. Check ticketing and shuttle details on the official channels before you go. Map
5. Nong Prajak Public Park
The city’s green heart, a lake with walking and cycling paths, sculptures and food stalls; locals jog here at dawn and dusk. Map
6. Wat Pa Phu Kon
A forest temple in Na Yung district with a white marble reclining Buddha in a striking modern hall, surrounded by protected woodland. Map
7. Kham Chanot
A small, densely wooded island in Ban Dung district linked to Naga legends; pilgrims cross a bridge to pay respects and make wishes. Map
8. UD Town and the night markets
Next to the railway station, the open-air UD Town mall and the surrounding evening markets are the place for dinner, shopping and people-watching. Map
9. The Chinese shrine at Nong Bua lake
Udon has a long-established Thai-Chinese community, and the colourful Chinese shrine by Nong Bua lake is the centre of its celebrations, especially at Chinese New Year. Map
Suggested two-day itinerary
Day 1: Pre-dawn boat trip on the Red Lotus Sea (in season), late breakfast of khao piak in town, afternoon at Ban Chiang museum and excavation pit, dinner at UD Town. Day 2: Morning at Phu Phrabat Historical Park, lunch on the way back, then the Horticultural Expo (until March 2027) or an evening walk at Nong Prajak Park. Add a day to visit Nong Khai and the Mekong, about an hour away.
Festivals and events in Udon Thani
Udon Thani International Horticultural Expo (1 Nov 2026–14 Mar 2027): the biggest event in the province’s recent history. Thung Si Mueang and Red Cross Fair, around December: the annual provincial fair in the city centre with stalls, concerts and local products. Songkran (13–15 April): water play around UD Town and city streets, plus temple rituals; read our Songkran etiquette and survival guide. Dates vary — check with TAT.
Travel tips
- Go to the Red Lotus Sea early: boats run from dawn and the flowers close by late morning.
- Phu Phrabat involves walking on uneven rock; wear proper shoes and bring water.
- Udon is the most convenient airport for Nong Khai and for crossing into Laos.
- Book hotels ahead during the expo period.
FAQ
When is the Red Lotus Sea in bloom?
Usually from around December to February, best in the early morning.
What are Udon Thani’s World Heritage Sites?
Ban Chiang Archaeological Site (1992) and Phu Phrabat (2024).
How far is Nong Khai from Udon?
About 50–60 km, roughly an hour by road.
Is Udon Thani good for food?
Yes — it has several MICHELIN Bib Gourmand restaurants; see our food guide.
Keep exploring
- Udon Thani food guide: what and where to eat
- Things to do in Nong Khai
- Things to do in Loei
- Things to do in Nakhon Ratchasima
Cover photo: Red Lotus Sea at Nong Han Kumphawapi, Udon Thani, Thailand.jpg · Unknown authorUnknown author · CC BY 4.0 · Wikimedia Commons
