Cheap flights from Bangkok to Kathmandu from $407

The cheapest month to fly to Kathmandu from Bangkok is in December. Flight prices, which tend to average around $355, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of December, then book flights to Kathmandu from Bangkok during January instead. Flights to Kathmandu in January, while not as cheap as those in December, still average around $358.

The cheapest day to depart from Bangkok to Kathmandu is on a Wednesday when prices can be found for as low as $549. Flights from Bangkok to Kathmandu on a Saturday will generally be more expensive and average around $768. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Fly from Bangkok Don Mueang Intl to Kathmandu Tribhuvan for the best Bangkok - Kathmandu Tribhuvan flight prices

You are more likely to see cheaper flights to Kathmandu from Bangkok when booking weeks ahead of your departure date. In general, you can expect to find flights to Kathmandu for around $461 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Kathmandu from Bangkok for as low as $328 on momondo.

Historically, on average around 29% of flights between Bangkok and Kathmandu have experienced a delay on any given week. The average delay length over the past 12 months has been 86 minutes.

Generally, flights departing in the evening tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.

Sunday is statistically the day of the week that experiences the fewest delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

According to our data, Thai Airways have had the fewest delays on this route over the last 12 months, with about 20% of their flights experiencing any sort of delay.

The number of flights available between Bangkok and Kathmandu is 2 per day as of August 2026. The most frequent departure time is 21:00, with 43% of daily flights leaving in the evening.

17 flights are operational weekly from Bangkok to Kathmandu as of August 2026. The most popular departure day for this route is Mon, with 18% of flights per week taking off on this day.