The best month to arrive at Chiang Rai is June and the most expensive month to fly is November. (Average prices, based on 1040 datapoints.)
The best day to arrive at Chiang Rai is Wednesday and it would be best to avoid Friday, as prices are on average 83.98% higher than on Wednesday. (Average prices, based on 1040 datapoints.)
The cheapest airline flying to Chiang Rai is Thai Vietjet Air. They are 35% cheaper than Thai Airways. (Average prices, based on 1057 datapoints.)