Cheap flights from Bangkok Suvarnabhumi Airport to Kathmandu from $305

The cheapest month to fly to Kathmandu from Bangkok Suvarnabhumi Airport is in January. Flight prices, which tend to average around $342, 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 December instead. Flights to Kathmandu in December, while not as cheap as those in January, still average around $357.

The cheapest day to depart from Bangkok Suvarnabhumi Airport to Kathmandu is on a Monday when prices can be found for as low as $583. Flights from Bangkok Suvarnabhumi Airport to Kathmandu on a Wednesday will generally be more expensive and average around $636. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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 $475 when looking at flights departing in the morning. Flights to Kathmandu are more costly in the evening, with an average ticket price of $838. 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 $476 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 $321 on momondo.

There are 2 cabin classes available to choose from on Bangkok Suvarnabhumi Airport to Kathmandu flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 23% on your flight if you consider stops on a Bangkok Suvarnabhumi Airport to Kathmandu flight.

As of September 2026, prices for Bangkok Suvarnabhumi Airport to Kathmandu flights are approximately 29% cheaper when compared to flights at the same time last year.

Historically, on average around 27% 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 87 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 1 per day as of September 2026. The most frequent departure time is 10:00, with 42% of daily flights leaving at midday.

The number of flights available between Bangkok Suvarnabhumi Airport and Kathmandu is 12 per week as of September 2026. The most frequent departure day is Mon, with 25% of weekly flights leaving on this day.