There is no direct train. You change trains once in Bangkok</strong> or <strong>Ayutthaya</strong> or <strong>Rangsit</strong> or <strong>Phachi and book each train as its own ticket. We found 11 good connections.
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.
22h 09mfrom 1,535 THBFastestSleep on the train
Day 1 07:30 Chiang Mai → Day 1 17:40 Bangkok (Krung Thep Aphiwat)
Is there a direct train from Chiang Mai to Udon Thani?
No. You change trains once, in Bangkok or Ayutthaya or Rangsit or Phachi, and book each train as a separate ticket.
What is the fastest way from Chiang Mai to Udon Thani by train?
Take SP8 at 07:30, change in Bangkok and continue on SP25. The whole trip takes about 22h 09m, including 2h 45m to change trains.
What is the cheapest train from Chiang Mai to Udon Thani?
From about 762 THB per adult in total, on SP8 and RP133 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.
