I had such a difficult time finding information for Chan Tour that when I finally did find it, I thought it would be nice to post it here in case someone else needs it.
Chan Tour Chiang Mai office
T: 05 327 4721
05 327 4722
Ticket Office: 06:00-21:00
Chan Tour Bangkok office
T: 02 618 7418
02 618 7419
02 618 7420
Ticket Office: 06:00-21:00
I also found out that for the Bangkok branch, VIP buses leave starting at 05:00 and leave every hour thereafter until 23:00.
The bus from Bangkok to Udon takes 8 hours.







