Udon Thani to Nakhon Ratchasima by train

There is no direct train. You change trains once in Saraburi or Kaeng Khoi or Ayutthaya or Rangsit or Phachi or Bangkok and book each train as its own ticket. We found 12 good connections.

Cheapest 343 THB EX76 + RP139 · 17h 21m Fastest 13h 02m RP134 + SP21 · 13h 02m Sleep on the train 1,076 THB SP26 + RP135 · 15h 52m · 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	Saraburi wait 2h 04m	SP21 07:33	13h 02m	at booking	–
RP134 20:59	Kaeng Khoi wait 2h 30m	SP21 07:44	13h 02m	at booking	–
SP26 20:20	Ayutthaya wait 2h 34m	SP21 06:58	13h 41m	at booking	–
SP26 20:20	Rangsit wait 1h 33m	SP21 06:36	13h 41m	at booking	–
RP134 20:59	Kaeng Khoi wait 4h 15m	RP135 09:29	15h 13m	at booking	–
RP134 20:59	Saraburi wait 3h 48m	RP135 09:17	15h 13m	at booking	–
RP134 20:59	Ayutthaya wait 2h 13m	RP135 08:27	15h 13m	at booking	–
RP134 20:59	Phachi wait 2h 56m	RP135 08:50	15h 13m	at booking	–
SP26 20:20	Bangkok wait 1h 40m	RP135 07:10	15h 52m	1,076 THB	1,076 THB
SP26 20:20	Rangsit wait 2h 35m	RP135 07:38	15h 52m	at booking	–
EX76 07:08	Bangkok wait 4h 20m	RP139 19:40	17h 21m	343 THB	737 THB
EX76 07:08	Kaeng Khoi wait 8h 01m	RP139 21:42	17h 21m	at booking	–

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.

13h 02mFastest

Day 1 20:59 Udon Thani → Day 2 05:29 Saraburi

RP134 · Rapid · 8h 30m · 🌙 overnight

Book RP134
⏱ Change in Saraburi: wait 2h 04m at Saraburi
Day 2 07:33 Saraburi → Day 2 10:01 Nakhon Ratchasima

SP21 · Special Express · 2h 28m

Book SP21

13h 02m

Day 1 20:59 Udon Thani → Day 2 05:14 Kaeng Khoi

RP134 · Rapid · 8h 15m · 🌙 overnight

Book RP134
⏱ Change in Kaeng Khoi: wait 2h 30m at Kaeng Khoi
Day 2 07:44 Kaeng Khoi → Day 2 10:01 Nakhon Ratchasima

SP21 · Special Express · 2h 17m

Book SP21

13h 41m

Day 1 20:20 Udon Thani → Day 2 04:24 Ayutthaya

SP26 · Special Express · 8h 04m · 🌙 overnight

Book SP26
⏱ Change in Ayutthaya: wait 2h 34m at Ayutthaya
Day 2 06:58 Ayutthaya → Day 2 10:01 Nakhon Ratchasima

SP21 · Special Express · 3h 03m

Book SP21

13h 41mShort change: trains can be late

Day 1 20:20 Udon Thani → Day 2 05:03 Rangsit

SP26 · Special Express · 8h 43m · 🌙 overnight

Book SP26
⏱ Change in Rangsit: wait 1h 33m at Rangsit
Day 2 06:36 Rangsit → Day 2 10:01 Nakhon Ratchasima

SP21 · Special Express · 3h 25m

Book SP21

15h 13m

Day 1 20:59 Udon Thani → Day 2 05:14 Kaeng Khoi

RP134 · Rapid · 8h 15m · 🌙 overnight

Book RP134
⏱ Change in Kaeng Khoi: wait 4h 15m at Kaeng Khoi
Day 2 09:29 Kaeng Khoi → Day 2 12:12 Nakhon Ratchasima

RP135 · Rapid · 2h 43m

Book RP135

15h 13m

Day 1 20:59 Udon Thani → Day 2 05:29 Saraburi

RP134 · Rapid · 8h 30m · 🌙 overnight

Book RP134
⏱ Change in Saraburi: wait 3h 48m at Saraburi
Day 2 09:17 Saraburi → Day 2 12:12 Nakhon Ratchasima

RP135 · Rapid · 2h 55m

Book RP135

15h 13m

Day 1 20:59 Udon Thani → Day 2 06:14 Ayutthaya

RP134 · Rapid · 9h 15m · 🌙 overnight

Book RP134
⏱ Change in Ayutthaya: wait 2h 13m at Ayutthaya
Day 2 08:27 Ayutthaya → Day 2 12:12 Nakhon Ratchasima

RP135 · Rapid · 3h 45m

Book RP135

15h 13m

Day 1 20:59 Udon Thani → Day 2 05:54 Phachi

RP134 · Rapid · 8h 55m · 🌙 overnight

Book RP134
⏱ Change in Phachi: wait 2h 56m at Phachi
Day 2 08:50 Phachi → Day 2 12:12 Nakhon Ratchasima

RP135 · Rapid · 3h 22m

Book RP135

15h 52mfrom 1,076 THBSleep on the trainShort change: trains can be late

Day 1 20:20 Udon Thani → Day 2 05:30 Bangkok (Krung Thep Aphiwat)

SP26 · Special Express · 9h 10m · 🌙 overnight · from 977 THB · berth 977 THB

Book SP26
⏱ Change in Bangkok: wait 1h 40m at Bangkok (Krung Thep Aphiwat)
Day 2 07:10 Bangkok (Krung Thep Aphiwat) → Day 2 12:12 Nakhon Ratchasima

RP135 · Rapid · 5h 02m · from 99 THB

Book RP135

15h 52m

Day 1 20:20 Udon Thani → Day 2 05:03 Rangsit

SP26 · Special Express · 8h 43m · 🌙 overnight

Book SP26
⏱ Change in Rangsit: wait 2h 35m at Rangsit
Day 2 07:38 Rangsit → Day 2 12:12 Nakhon Ratchasima

RP135 · Rapid · 4h 34m

Book RP135

17h 21mfrom 343 THBCheapest

Day 1 07:08 Udon Thani → Day 1 15:20 Bangkok (Krung Thep Aphiwat)

EX76 · Express · 8h 12m · from 244 THB

Book EX76
⏱ Change in Bangkok: wait 4h 20m at Bangkok (Krung Thep Aphiwat)
Day 1 19:40 Bangkok (Krung Thep Aphiwat) → Day 2 00:29 Nakhon Ratchasima

RP139 · Rapid · 4h 49m · 🌙 overnight · from 99 THB · berth 493 THB

Book RP139

17h 21m

Day 1 07:08 Udon Thani → Day 1 13:41 Kaeng Khoi

EX76 · Express · 6h 33m

Book EX76
⏱ Change in Kaeng Khoi: wait 8h 01m at Kaeng Khoi
Day 1 21:42 Kaeng Khoi → Day 2 00:29 Nakhon Ratchasima

RP139 · Rapid · 2h 47m · 🌙 overnight

Book RP139

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 Nakhon Ratchasima?

No. You change trains once, in Saraburi or Kaeng Khoi or Ayutthaya or Rangsit or Phachi or Bangkok, and book each train as a separate ticket.

What is the fastest way from Udon Thani to Nakhon Ratchasima by train?

Take RP134 at 20:59, change in Saraburi and continue on SP21. The whole trip takes about 13h 02m, including 2h 04m to change trains.

What is the cheapest train from Udon Thani to Nakhon Ratchasima?

From about 343 THB per adult in total, on EX76 and RP139 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.