There is no direct train. You change trains once in Bangkok and book each train as its own ticket. We found 3 good connections.
| 1st train | Change at | 2nd train | Total time | Fare from | With berths |
|---|---|---|---|---|---|
| RP172 20:55 | Bangkok wait 1h 12m |
EX75 08:45 | 20h | 460 THB | 968 THB |
| SP40 09:00 | Bangkok wait 2h 20m |
SP25 20:25 | 20h 39m | 1,501 THB | 1,501 THB |
| SP40 09:00 | Bangkok wait 3h 20m |
RP133 21:25 | 22h 02m | 728 THB | 1,261 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.
See also: night trains · return: Udon Thani to Surat Thani · all connections
No. You change trains once, in Bangkok, and book each train as a separate ticket.
Take RP172 at 20:55, change in Bangkok and continue on EX75. The whole trip takes about 20h, including 1h 12m to change trains.
From about 460 THB per adult in total, on RP172 and EX75 in the cheapest available class.
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.