Cheap flights from Kathmandu to Southeast Asia from £150

The month of March is, on average, the cheapest month to fly to Southeast Asia from Kathmandu, with most prices found around £399. If you are unable to visit Southeast Asia during the month of March, then departing from Kathmandu during the month December is also very affordable. Most momondo users find prices during this month for around £410.

Our data shows that Friday is the least expensive day to fly to Southeast Asia. Tickets to fly out on this day can be as low as £260. Be sure to avoid booking your departure on a Tuesday as prices are generally higher than usual. According to our data, the average ticket price to Southeast Asia on Tuesday is £381.

In the afternoon is the cheapest time of day to fly from Kathmandu to Southeast Asia when you can find flight prices for as low as £167. Flying to Southeast Asia in the afternoon is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the evening because they tend to be around £333. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

You are more likely to see cheaper flights to Southeast Asia from Kathmandu when booking weeks ahead of your departure date. In general, you can expect to find flights to Southeast Asia for around £245 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Southeast Asia from Kathmandu for as low as £194 on momondo.

There are 3 cabin classes available to choose from on Kathmandu to Southeast Asia flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Thai Airways, Biman Bangladesh, and Singapore Airlines are the most popular carriers operating from Kathmandu Tribhuvan to Southeast Asia

Thai Airways, Thai AirAsia and Singapore Airlines are the top three most popular airlines that fly to Southeast Asia from Kathmandu according to our data. Thai Airways is the first choice among our users, with 38% of people opting to fly with this airline when travelling to Southeast Asia. Keep in mind that there are 5 different airlines that fly to Southeast Asia on a routine basis, so you have a few additional options to choose from.

2 flights are operational daily from Kathmandu to Southeast Asia as of September 2026. The most popular departure time for this route is 22:00, with 48% of flights per day taking off in the evening.

As of September 2026, there are 14 flights per week flying from Kathmandu to Southeast Asia. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.