Udon Thani to Ubon Ratchathani 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 449 THB EX76 + RP139 · 22h 32m Fastest 17h 01m RP134 + SP21 · 17h 01m Sleep on the train 1,182 THB SP26 + RP135 · 21h 40m · 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	17h 01m	at booking	–
RP134 20:59	Kaeng Khoi wait 2h 30m	SP21 07:44	17h 01m	at booking	–
SP26 20:20	Ayutthaya wait 2h 34m	SP21 06:58	17h 40m	at booking	–
SP26 20:20	Rangsit wait 1h 33m	SP21 06:36	17h 40m	at booking	–
RP134 20:59	Kaeng Khoi wait 4h 15m	RP135 09:29	21h 01m	at booking	–
RP134 20:59	Saraburi wait 3h 48m	RP135 09:17	21h 01m	at booking	–
RP134 20:59	Ayutthaya wait 2h 13m	RP135 08:27	21h 01m	at booking	–
RP134 20:59	Phachi wait 2h 56m	RP135 08:50	21h 01m	at booking	–
SP26 20:20	Bangkok wait 1h 40m	RP135 07:10	21h 40m	1,182 THB	1,182 THB
SP26 20:20	Rangsit wait 2h 35m	RP135 07:38	21h 40m	at booking	–
EX76 07:08	Bangkok wait 4h 20m	RP139 19:40	22h 32m	449 THB	943 THB
EX76 07:08	Ayutthaya wait 6h 22m	RP139 20:46	22h 32m	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.

17h 01mFastest

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 14:00 Ubon Ratchathani

SP21 · Special Express · 6h 27m

Book SP21

17h 01m

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 14:00 Ubon Ratchathani

SP21 · Special Express · 6h 16m

Book SP21

17h 40m

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 14:00 Ubon Ratchathani

SP21 · Special Express · 7h 02m

Book SP21

17h 40mShort 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 14:00 Ubon Ratchathani

SP21 · Special Express · 7h 24m

Book SP21

21h 01m

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 18:00 Ubon Ratchathani

RP135 · Rapid · 8h 31m

Book RP135

21h 01m

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 18:00 Ubon Ratchathani

RP135 · Rapid · 8h 43m

Book RP135

21h 01m

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 18:00 Ubon Ratchathani

RP135 · Rapid · 9h 33m

Book RP135

21h 01m

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 18:00 Ubon Ratchathani

RP135 · Rapid · 9h 10m

Book RP135

21h 40mfrom 1,182 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 18:00 Ubon Ratchathani

RP135 · Rapid · 10h 50m · from 205 THB

Book RP135

21h 40m

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 18:00 Ubon Ratchathani

RP135 · Rapid · 10h 22m

Book RP135

22h 32mfrom 449 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 05:40 Ubon Ratchathani

RP139 · Rapid · 10h · 🌙 overnight · from 205 THB · berth 699 THB

Book RP139

22h 32m

Day 1 07:08 Udon Thani → Day 1 14:24 Ayutthaya

EX76 · Express · 7h 16m

Book EX76
⏱ Change in Ayutthaya: wait 6h 22m at Ayutthaya
Day 1 20:46 Ayutthaya → Day 2 05:40 Ubon Ratchathani

RP139 · Rapid · 8h 54m · 🌙 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 Ubon Ratchathani?

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 Ubon Ratchathani by train?

Take RP134 at 20:59, change in Saraburi and continue on SP21. The whole trip takes about 17h 01m, including 2h 04m to change trains.

What is the cheapest train from Udon Thani to Ubon Ratchathani?

From about 449 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.