Udon Thani to Surin 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 426 THB EX76 + RP139 · 20h 07m Fastest 15h 10m RP134 + SP21 · 15h 10m Sleep on the train 1,159 THB SP26 + RP135 · 18h 47m · 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	15h 10m	at booking	–
RP134 20:59	Kaeng Khoi wait 2h 30m	SP21 07:44	15h 10m	at booking	–
SP26 20:20	Ayutthaya wait 2h 34m	SP21 06:58	15h 49m	at booking	–
SP26 20:20	Rangsit wait 1h 33m	SP21 06:36	15h 49m	at booking	–
RP134 20:59	Kaeng Khoi wait 4h 15m	RP135 09:29	18h 08m	at booking	–
RP134 20:59	Saraburi wait 3h 48m	RP135 09:17	18h 08m	at booking	–
RP134 20:59	Ayutthaya wait 2h 13m	RP135 08:27	18h 08m	at booking	–
RP134 20:59	Phachi wait 2h 56m	RP135 08:50	18h 08m	at booking	–
SP26 20:20	Bangkok wait 1h 40m	RP135 07:10	18h 47m	1,159 THB	1,159 THB
SP26 20:20	Rangsit wait 2h 35m	RP135 07:38	18h 47m	at booking	–
EX76 07:08	Bangkok wait 4h 20m	RP139 19:40	20h 07m	426 THB	871 THB
EX76 07:08	Ayutthaya wait 6h 22m	RP139 20:46	20h 07m	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.

15h 10mFastest

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 12:09 Surin

SP21 · Special Express · 4h 36m

Book SP21

15h 10m

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 12:09 Surin

SP21 · Special Express · 4h 25m

Book SP21

15h 49m

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 12:09 Surin

SP21 · Special Express · 5h 11m

Book SP21

15h 49mShort 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 12:09 Surin

SP21 · Special Express · 5h 33m

Book SP21

18h 08m

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 15:07 Surin

RP135 · Rapid · 5h 38m

Book RP135

18h 08m

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 15:07 Surin

RP135 · Rapid · 5h 50m

Book RP135

18h 08m

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 15:07 Surin

RP135 · Rapid · 6h 40m

Book RP135

18h 08m

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 15:07 Surin

RP135 · Rapid · 6h 17m

Book RP135

18h 47mfrom 1,159 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 15:07 Surin

RP135 · Rapid · 7h 57m · from 182 THB

Book RP135

18h 47m

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 15:07 Surin

RP135 · Rapid · 7h 29m

Book RP135

20h 07mfrom 426 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 03:15 Surin

RP139 · Rapid · 7h 35m · 🌙 overnight · from 182 THB · berth 627 THB

Book RP139

20h 07m

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 03:15 Surin

RP139 · Rapid · 6h 29m · 🌙 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 Surin?

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 Surin by train?

Take RP134 at 20:59, change in Saraburi and continue on SP21. The whole trip takes about 15h 10m, including 2h 04m to change trains.

What is the cheapest train from Udon Thani to Surin?

From about 426 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.