THE SHORT VERSION
Ayutthaya to Udon Thani at a glance.
- From
- Ayutthaya พระนครศรีอยุธยา
- To
- Udon Thani อุดรธานี
- Road distance
- About 521 km
- Straight line
- 415 km
- Car time, no stops
- ~6 h 30 min buses take longer
- Return route
- Udon Thani to Ayutthaya →
Ready to travel from Ayutthaya to Udon Thani?
Check live availability, fares and departure times with 12Go.
THE DETAILS THAT MAKE A DIFFERENCE
Right place. Right bus. Better start.
Leaving Ayutthaya
Ayutthaya is Thailand's former royal capital, about 80 km north of Bangkok, with temple ruins on an island in the river. Minivans and buses run frequently from Bangkok, and many northbound buses stop here.
- Ayutthaya minivan and bus stops
Minivans from Bangkok stop near the historic island; long-distance buses use a terminal east of the river.
Arriving in Udon Thani
Tuk-tuks and songthaews connect the terminals with the centre.
- Udon Thani Bus Terminal 1
In the centre. Long-distance buses and the international bus to Vientiane. - Udon Thani Bus Terminal 2
On the edge of town. Regional services.
Keep the essentials offline
Save your ticket, the exact meeting point and the operator's phone number before you set off. Follow the check-in time on your confirmation.
- For Vientiane, the international bus is the simplest way across the border.
KEEP GOING
From Udon Thani, the road continues.
Other ways to reach Udon Thani
More buses from Ayutthaya
GOOD QUESTIONS
Before you take your seat.
How far is Ayutthaya from Udon Thani by road?+
About 521 km by road (415 km in a straight line). Distance is an OpenStreetMap routing estimate, not an operator figure.
How long does the bus from Ayutthaya to Udon Thani take?+
We don't publish timetables. As a guide, the drive takes roughly 6 h 30 min by car without stops; bus journeys are usually longer. Check the duration of your chosen departure on 12Go before booking.
Where does the bus leave from in Ayutthaya?+
It depends on the operator. Main options in Ayutthaya include Ayutthaya minivan and bus stops, and many tourist companies collect from offices or hotels. Your ticket shows the exact boarding point.
Is there a bus back from Udon Thani to Ayutthaya?+
Yes, 12Go also lists services in the opposite direction. See our Udon Thani to Ayutthaya guide.
Where does the bus from Ayutthaya arrive in Udon Thani?+
It depends on the operator. In Udon Thani, services use Udon Thani Bus Terminal 1, Udon Thani Bus Terminal 2. Tuk-tuks and songthaews connect the terminals with the centre.
How do I get from the bus stop to the centre of Udon Thani?+
Tuk-tuks and songthaews connect the terminals with the centre.
What kind of bus runs from Ayutthaya to Udon Thani?+
It varies by operator and departure. Routes in this region are served by a mix of sleeper buses, seated coaches and smaller limousine vans. Check the vehicle type, seat layout and luggage allowance for your departure on 12Go before you book.
Can I book the Ayutthaya to Udon Thani bus online?+
Yes. 12Go lists departures on this route. You choose a date, compare operators and pay online, and the provider issues the ticket. BusConnects doesn't sell tickets itself.
Where can I go next from Udon Thani by bus?+
Direct buses from Udon Thani include Vientiane, Khon Kaen, Nakhon Ratchasima (Korat), Phitsanulok, Ubon Ratchathani and more. See all connections on our Udon Thani bus page.
Still deciding? Check today's departures, then book your seat.
Book Ayutthaya → Udon Thani on 12GoFOLLOW THE INFORMATION
Clear sources. Better decisions.
Route listed in 12Go's public route index (checked 2026-10-09). Station information reviewed 2026-10-09. Distance: OpenStreetMap data via OSRM (approximate driving distance). Listings change and are not live inventory. Confirm the departure, pickup, price and conditions before paying.
12Go: Ayutthaya to Udon Thani bus route listing ↗Wikivoyage: Ayutthaya (Get in) ↗Wikivoyage: Udon Thani (Get in) ↗How BusConnects uses sources →