Cheap flights from Bangkok Suvarnabhumi Airport to Kathmandu from $304

The cheapest month to fly to Kathmandu from Bangkok Suvarnabhumi Airport is in January. Flight prices, which tend to average around $340, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to Kathmandu from Bangkok Suvarnabhumi Airport during June instead. Flights to Kathmandu in June, while not as cheap as those in January, still average around $352.

Flying to Kathmandu from Bangkok Suvarnabhumi Airport in the morning is the least expensive time of day to depart. momondo users have found prices as low as $374 when looking at flights departing in the morning. Flights to Kathmandu are more costly in the evening, with an average ticket price of $692. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Bangkok Suvarnabhumi to Kathmandu Tribhuvan for the best Bangkok Suvarnabhumi - Kathmandu Tribhuvan flight prices

You are more likely to see cheaper flights to Kathmandu from Bangkok Suvarnabhumi Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Kathmandu for around $383 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 Suvarnabhumi Airport for as low as $329 on momondo.

You could potentially save up to 52% on your flight if you consider stops on a Bangkok Suvarnabhumi Airport to Kathmandu flight.

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 89 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.

Tuesday 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 Suvarnabhumi Airport and Kathmandu is 2 per day as of April 2026. The most frequent departure time is 10:00, with 44% of daily flights leaving at midday.

The number of flights available between Bangkok Suvarnabhumi Airport and Kathmandu is 16 per week as of April 2026. The most frequent departure day is Mon, with 19% of weekly flights leaving on this day.