Flight Don Mueang International Airport departs from Bangkok Don Mueang International Airport at 15:00 and arrives at Kathmandu Tribhuvan International Airport at 17:30.
The flighttime is about 3h 30m. The distance travelled ("as the bird flies"): 1684 Km. So the average speed is roughly 481 Km.
There is an 1 hour time difference between Bangkok and Kathmandu
The best month to arrive at Bangkok is November and the most expensive month to fly is June. (Average prices, based on 692 datapoints.)
The best day to arrive at Bangkok is Tuesday and it would be best to avoid Sunday, as prices are on average 15.01% higher than on Tuesday. (Average prices, based on 200800 datapoints.)
We have a lot more statistics for flights SL 220 and between Bangkok and Kathmandu.