The best month to arrive at Kathmandu is December and the most expensive month to fly is October. (Average prices, based on 368 datapoints.)
The best day to arrive at Kathmandu is Sunday and it would be best to avoid Tuesday, as prices are on average 57.47% higher than on Sunday. (Average prices, based on 741 datapoints.)
The cheapest airline flying to Kathmandu is Vistara. They are 79% cheaper than Thai Airways. (Average prices, based on 396 datapoints.)