Bangkok to Chiang Mai. 1104 baht one way pre-bookable (27 US$ ) Four flights each way every day using 757-200 aircraft ( ex XU-123 registration number ) Firstly I had my doubts after reading the other comments however I was very pleasantly surprised. I flew BKK-CNX on the OX126 on the 17th December we pushed back two minutes late and arrived on time. The aircraft although old was clean - peanuts and soft drink served by young enthusiastic staff flight about 85% full. Information given out by very young looking English captain was good and informative no complaints whatsoever. The return on the 19th was just as good push back 17 minutes late it appears that one aircraft is used on this route only so may have knock on delays plane 100% full. I created a problem by being booked on a later flight that day but check in staff just amended and issued a boarding pass. CNX to BKK in 56 mins. I would recommend anyone to travel with them the price although a promotion was under half that of Thai/Bangkok Airways new routes open next year in Thailand. On arrival at BKK I saw a second 757-200 ready to go and a 747-200 I think 7 windows upper deck parked at the airport.