Udon Thani to Sungai Kolok by train

There is no direct train. You change trains once in Bangkok and book each train as its own ticket. We found 2 good connections.

Cheapest 493 THB RP134 + RP171 · 37h 11m Fastest 37h 11m RP134 + RP171 · 37h 11m · from 493 THB Sleep on the train 1,633 THB RP134 + RP171 · 37h 11m · berth fare

Day you leave Udon ThaniThe second train's date is set for you.

Compare all connections

1st train	Change at	2nd train	Total time	Fare from	With berths
RP134 20:59	Bangkok wait 7h 50m	RP171 15:10	37h 11m	493 THB	1,633 THB
RP134 20:59	Bangkok wait 8h 50m	SP37 16:10	37h 36m	573 THB	1,713 THB

Fares are per adult for the cheapest class we know on each train. "With berths" uses a sleeper berth on the overnight train(s). Live fares show when you book.

37h 11mfrom 493 THBCheapestFastestSleep on the train

Day 1 20:59 Udon Thani → Day 2 07:20 Bangkok (Krung Thep Aphiwat)

RP134 · Rapid · 10h 21m · 🌙 overnight · from 204 THB · berth 737 THB

Book RP134
⏱ Change in Bangkok: wait 7h 50m at Bangkok (Krung Thep Aphiwat)
Day 2 15:10 Bangkok (Krung Thep Aphiwat) → Day 3 10:10 Sungai Kolok

RP171 · Rapid · 19h · 🌙 overnight · from 289 THB · berth 896 THB

Book RP171

37h 36mfrom 573 THB

Day 1 20:59 Udon Thani → Day 2 07:20 Bangkok (Krung Thep Aphiwat)

RP134 · Rapid · 10h 21m · 🌙 overnight · from 204 THB · berth 737 THB

Book RP134
⏱ Change in Bangkok: wait 8h 50m at Bangkok (Krung Thep Aphiwat)
Day 2 16:10 Bangkok (Krung Thep Aphiwat) → Day 3 10:35 Sungai Kolok

SP37 · Special Express · 18h 25m · 🌙 overnight · from 369 THB · berth 976 THB

Book SP37

Good to know

Each train is a separate ticket. Book the first train, then the second train for the day it leaves.
Leave at least 2–3 hours to change trains. Long-distance trains, especially from the south, often run late, and a missed connection is not refunded.
Most long-distance trains in Bangkok use Krung Thep Aphiwat Central Terminal, so you usually change in the same building.
Times and fares come from our timetable and can change. The booking page shows the live times, seats and fares.

FAQ

Is there a direct train from Udon Thani to Sungai Kolok?

No. You change trains once, in Bangkok, and book each train as a separate ticket.

What is the fastest way from Udon Thani to Sungai Kolok by train?

Take RP134 at 20:59, change in Bangkok and continue on RP171. The whole trip takes about 37h 11m, including 7h 50m to change trains.

What is the cheapest train from Udon Thani to Sungai Kolok?

From about 493 THB per adult in total, on RP134 and RP171 in the cheapest available class.

How much time should I leave to change trains?

At least one hour at the same station. Long-distance trains, especially from the south, are often late, so a wait of 2–3 hours is safer. If you change between Hua Lamphong and Krung Thep Aphiwat in Bangkok, allow extra time to cross the city.