Hello norsknordmannen, let me guess, you are from the North

AirAisa is still based at Suvarnabhumi and flies to Udon Thani daily. On June 25:
FD 3364 Depart 16:15 (BKK) Arrive 17:15 (UTH) current fare on the website 499.00 THB + taxes.
Nok Air flies from Don Muang to Udon Thani 3 times per day 6:00, 12:30, 17:00.