How long is the flight from Kathmandu to Southeast Asia?

A quick flight from Kathmandu to Southeast Asia can take about 16h 20m. Malaysia Airlines provides one of the quickest options available for as low as £394. The distance between Kathmandu and Southeast Asia is about 1384 mi. This flight may include one or multiple stops.

What are the cheapest airlines to fly from Kathmandu to Southeast Asia one-way?

To fly one-way, consider booking your trip with Thai Lion Air, which is currently one of the cheapest options available, starting at £83. Thai AirAsia flights start at £83 while deals on Nepal Airlines start at £134 one-way.

In terms of precipitation, rainfall in Southeast Asia ranges from 10.0 - 320.0 inches per month. September is typically the wettest month, when rainfall can reach 320.0 mm. January is typically the driest time to visit Southeast Asia when rainfall is around 10.0 mm.

If weather is an important factor for your trip to Southeast Asia, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 30.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 26.0 C).

What are the cheapest flights from Kathmandu to Southeast Asia?

The cheapest flight price from Kathmandu to Southeast Asia is £177. On average you can expect to pay £1,551. The most popular route, (Kathmandu Tribhuvan - Bangkok Suvarnabhumi), can usually be booked for £272.

What are the most popular airlines that fly from Kathmandu to Southeast Asia?

When booking a flight from Kathmandu to Southeast Asia, you may want to consider flying on Thai AirAsia, Thai Airways or Singapore Airlines as they are the most popular for this route.

What airport do you fly from for flights from Kathmandu to Southeast Asia?

Kathmandu Tribhuvan (KTM), located 2.5 mi from the city center, is the airport you fly out of when you book flights from Kathmandu to Southeast Asia.

Can I find deals for flights from Kathmandu to Southeast Asia that include hotel bookings?

Yes. In addition to deals on Kathmandu to Southeast Asia flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Kathmandu to Southeast Asia?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Kathmandu to Southeast Asia.

Can I find deals for business class flights from Kathmandu to Southeast Asia?

Yes. Cheapflights offers flight deals from Kathmandu to Southeast Asia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£126+ Cheap Flights from Kathmandu to Southeast Asia

Cheap flight deals from Kathmandu to Southeast Asia

Enter your travel dates to find the best prices.

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Best

Direct

Last-minute

One-way

Cheapest flights from Kathmandu to Southeast Asia
Explore the most affordable flight options available from Kathmandu to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 23 April 2026.

Tue 19/521:10

KTM

BKK

1 stop15h 50m

Air India

Tue 26/507:30

BKK

KTM

1 stop13h 55m

Air India

Deal found 19/4£268

Fri 5/606:45

KTM

BKK

1 stop8h 55m

Air India

Sun 14/608:40

BKK

KTM

1 stop15h 35m

Air India

Deal found 22/4£269

Fri 15/506:30

KTM

BKK

1 stop9h 10m

Air India

Fri 15/522:25

BKK

KTM

1 stop9h 25m

Air India

Deal found 19/4£269

Sat 6/606:45

KTM

BKK

1 stop8h 55m

Air India

Sat 13/615:15

BKK

KTM

1 stop18h 55m

Air India

Deal found 22/4£270

Thu 14/510:05

KTM

BKK

1 stop9h 05m

Air India

Thu 21/507:30

BKK

KTM

1 stop7h 25m

Air India

Deal found 22/4£286

Sun 10/521:10

KTM

BKK

1 stop22h 00m

Air India

Sun 17/522:25

BKK

KTM

1 stop26h 55m

Air India

Deal found 18/4£289

Wed 3/606:45

KTM

BKK

1 stop8h 55m

Air India

Wed 10/616:45

BKK

KTM

2 stops25h 00m

Air India

Deal found 19/4£311

Tue 19/513:30

KTM

BKK

Nonstop3h 30m

Thai Airways

Tue 26/521:15

BKK

KTM

Nonstop3h 25m

Thai Airways

Deal found 19/4£320

Fri 5/613:30

KTM

BKK

Nonstop3h 30m

Thai Airways

Sun 14/621:15

BKK

KTM

Nonstop3h 25m

Thai Airways

Deal found 22/4£321

Sat 6/613:30

KTM

BKK

Nonstop3h 30m

Thai Airways

Sat 13/610:15

BKK

KTM

Nonstop3h 25m

Thai Airways

Deal found 22/4£323

Fri 1/510:05

KTM

BKK

1 stop19h 10m

Air India

Sun 10/517:55

BKK

KTM

1 stop16h 25m

Air India

Deal found 19/4£332

Find flight deals from Kathmandu to Southeast Asia

Round-trip from	£268
One-way from	£126
Popular in	April
Cheapest in	July
Average price	£243

Air India
19/5-26/5
2 total stops
29h 45m total
Kathmandu to Southeast Asia

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SriLankan Airlines
28/5
1 total stop
22h 15m total
Kathmandu to Southeast Asia

Search Deals

Highest demand for flights based on searches. 8% potential increase in price (£14 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£4 potential savings vs. average return price).

Search Deals

Average for round-trip flights in April 2026

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Kathmandu to Southeast Asia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Tue 7/7

22:45-16:20

1 stop16h 20m

Bangkok Suvarnabhumi

Fri 17/7

18:40-12:00

1 stop18h 35m

£394

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Thu 9/7

22:45-17:20

1 stop17h 20m

Bangkok Suvarnabhumi

Tue 14/7

06:00-21:45

1 stop17h 00m

£423

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Thu 21/5

16:35-18:10

2 stops24h 20m

Bangkok Suvarnabhumi

Fri 5/6

15:55-15:35

1 stop24h 55m

£451

Fastest return journey

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Tue 19/5

16:35-18:10

2 stops24h 20m

Bangkok Suvarnabhumi

Tue 2/6

07:50-15:35

1 stop9h 00m

£451

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Thu 21/5

16:35-18:10

2 stops24h 20m

Bangkok Suvarnabhumi

Sun 7/6

07:50-15:35

1 stop9h 00m

£451

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Tue 19/5

16:35-18:10

2 stops24h 20m

Bangkok Suvarnabhumi

Sun 7/6

07:50-15:35

1 stop9h 00m

£451

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Thu 21/5

16:35-18:10

2 stops24h 20m

Bangkok Suvarnabhumi

Fri 12/6

13:20-15:35

1 stop27h 30m

£453

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Sun 24/5

16:35-18:10

2 stops24h 20m

Bangkok Suvarnabhumi

Mon 8/6

13:20-15:35

1 stop27h 30m

£453

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Sat 23/5

16:35-18:10

2 stops24h 20m

Bangkok Suvarnabhumi

Tue 30/6

07:50-15:35

1 stop9h 00m

£471

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Thu 28/5

16:35-18:10

2 stops24h 20m

Bangkok Suvarnabhumi

Fri 3/7

20:50-15:35

1 stop20h 00m

£471

Flights are sorted by cheapest return flights first.

Deals found on 19/4

Showing 1-10 of 21 resultsSorted by cheapest first

Best time to book a flight from Kathmandu to Southeast Asia

Have a flexible travel schedule? Discover the best time to fly to Southeast Asia from Kathmandu with our price prediction graph.

KTM-BKK

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Kathmandu to Southeast Asia

KTM-zzYJX

KTM-BKK

How far ahead should I book a flight from Kathmandu to Southeast Asia?

To ensure you get the cheapest price possible for a flight from Kathmandu to Southeast Asia, you should look to book at least 87 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Kathmandu to Southeast Asia?

Currently, October is the cheapest month in which you can book a flight from Kathmandu to Southeast Asia (average of £73). Flying from Kathmandu to Southeast Asia in May is currently the most expensive (average of £183). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from KTM to YJX?

A simple way to save on the total cost of your ticket is to fly from Kathmandu to Southeast Asia in the morning. If you’re flexible enough to do this you can expect to save up to 57% on your trip compared to booking a flight at midday.

Weekly flight availability from Kathmandu to Southeast Asia

The most flights from KTM to zzYJX are scheduled on a Monday (3 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (2 on average).

Reviews of airlines servicing Southeast Asia

See what other customers who have flown with Singapore Airlines from Kathmandu to Southeast Asia have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Singapore Airlines

8.2

Very Good

1,502 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.

Singapore Airlines

8.2

Very Good

1,502 reviews

Singapore Airlines

8.2

Very Good

1,502 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Juliet,Oct 2025

PUS - SIN

Very kind staff to arrange my luggage and really appreciate all help.

Related info for your journey

What airport do you fly from for flights from Kathmandu to Southeast Asia?
Kathmandu Tribhuvan (KTM), located 2.5 mi from the city center, is the airport you fly out of when you book flights from Kathmandu to Southeast Asia.
How long is the flight from Kathmandu to Southeast Asia?
A quick flight from Kathmandu to Southeast Asia can take about 16h 20m. Malaysia Airlines provides one of the quickest options available for as low as £394. The distance between Kathmandu and Southeast Asia is about 1384 mi. This flight may include one or multiple stops.
What are the cheapest airlines to fly from Kathmandu to Southeast Asia one-way?
To fly one-way, consider booking your trip with Thai Lion Air, which is currently one of the cheapest options available, starting at £83. Thai AirAsia flights start at £83 while deals on Nepal Airlines start at £134 one-way.
What are the cheapest flights from Kathmandu to Southeast Asia?
The cheapest flight price from Kathmandu to Southeast Asia is £177. On average you can expect to pay £1,551. The most popular route, (Kathmandu Tribhuvan - Bangkok Suvarnabhumi), can usually be booked for £272.
Can I find deals for flights from Kathmandu to Southeast Asia that include hotel bookings?
Yes. In addition to deals on Kathmandu to Southeast Asia flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Kathmandu to Southeast Asia?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Kathmandu to Southeast Asia.
Can I find deals for business class flights from Kathmandu to Southeast Asia?
Yes. Cheapflights offers flight deals from Kathmandu to Southeast Asia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Kathmandu to Southeast Asia?
Currently, October is the cheapest month in which you can book a flight from Kathmandu to Southeast Asia (average of £73). Flying from Kathmandu to Southeast Asia in May is currently the most expensive (average of £183). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Top 5 airlines flying from Kathmandu to Southeast Asia

Airline	Cheapest	Average	Flexibility	On-time
Thai AirAsia	Cheapest£89	Average£179	FlexibilityNo cancel fee	On-time87%	Search Thai AirAsia flights
Thai Lion Air	Cheapest£91	Average£168	FlexibilityNo cancel fee	On-timeN/A	Search Thai Lion Air flights
Nepal Airlines	Cheapest£202	Average£240	FlexibilityNo cancel fee	On-timeN/A	Search Nepal Airlines flights
Thai Airways	Cheapest£225	Average£259	FlexibilityNo cancel fee	On-time77%	Search Thai Airways flights
Singapore Airlines	Cheapest£324	Average£405	FlexibilityNo cancel fee	On-time81%	Search Singapore Airlines flights

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Millions of users choose and trust Cheapflights to book the best flight deals from Kathmandu to Southeast Asia for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Kathmandu to Southeast Asia with no change fees?

Certainly. Search results for flights to Southeast Asia from Kathmandu shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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Cheap flights from Kathmandu to Southeast Asia from £126

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 28/5. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Kathmandu to Southeast Asia

Cheapest flights from Kathmandu to Southeast AsiaExplore the most affordable flight options available from Kathmandu to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 23 April 2026.

Explore the most affordable flight options available from Kathmandu to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 23 April 2026.

Best flights from Kathmandu to Southeast AsiaDiscover carefully curated flight deals from Kathmandu to Southeast Asia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 23 April 2026.

Discover carefully curated flight deals from Kathmandu to Southeast Asia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 23 April 2026.

Direct flights from Kathmandu to Southeast AsiaExplore direct flight options from Kathmandu to Southeast Asia based on user searches, and compare prices and availability for your desired travel dates. Data last updated 23 April 2026.

Explore direct flight options from Kathmandu to Southeast Asia based on user searches, and compare prices and availability for your desired travel dates. Data last updated 23 April 2026.

Last-minute flights from Kathmandu to Southeast AsiaDiscover last-minute flight deals from Kathmandu to Southeast Asia. Data last updated 23 April 2026 and is based on user searches.

Discover last-minute flight deals from Kathmandu to Southeast Asia. Data last updated 23 April 2026 and is based on user searches.

One-way flights from Kathmandu to Southeast AsiaSearch for one-way flight options from Kathmandu to Southeast Asia. Find affordable one-way fares based on user searches. Data last updated 23 April 2026.

Search for one-way flight options from Kathmandu to Southeast Asia. Find affordable one-way fares based on user searches. Data last updated 23 April 2026.

Find flight deals from Kathmandu to Southeast Asia

Keep the following information in mind while searching for Kathmandu to Southeast Asia flight deals. Data was last updated 23 April 2026.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Kathmandu to Southeast Asia that are best for you.

Best time to book a flight from Kathmandu to Southeast Asia

Have a flexible travel schedule? Discover the best time to fly to Southeast Asia from Kathmandu with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Kathmandu to Southeast Asia

How far ahead should I book a flight from Kathmandu to Southeast Asia?

What is the cheapest month to book a flight from Kathmandu to Southeast Asia?

What is the cheapest time of day to fly from KTM to YJX?

Find hourly flight availability from Kathmandu to Southeast Asia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 23 April 2026.

Weekly flight availability from Kathmandu to Southeast Asia

Reviews of airlines servicing Southeast Asia

See what other customers who have flown with Singapore Airlines from Kathmandu to Southeast Asia have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Kathmandu to Southeast Asia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from Kathmandu to Southeast Asia?

How long is the flight from Kathmandu to Southeast Asia?

What are the cheapest airlines to fly from Kathmandu to Southeast Asia one-way?

What are the cheapest flights from Kathmandu to Southeast Asia?

Can I find deals for flights from Kathmandu to Southeast Asia that include hotel bookings?

How can I find direct flights from Kathmandu to Southeast Asia?

Can I find deals for business class flights from Kathmandu to Southeast Asia?

What is the cheapest month to book a flight from Kathmandu to Southeast Asia?

Browse thousands of different options on Cheapflights for your next trip

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Kathmandu and Southeast Asia flights

Browse other Kathmandu and Southeast Asia flight options. Last updated on 23 April 2026.

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Top 5 airlines flying from Kathmandu to Southeast Asia

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Cheapest flights from Kathmandu to Southeast Asia
Explore the most affordable flight options available from Kathmandu to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 23 April 2026.

Best flights from Kathmandu to Southeast Asia
Discover carefully curated flight deals from Kathmandu to Southeast Asia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 23 April 2026.

Direct flights from Kathmandu to Southeast Asia
Explore direct flight options from Kathmandu to Southeast Asia based on user searches, and compare prices and availability for your desired travel dates. Data last updated 23 April 2026.

Last-minute flights from Kathmandu to Southeast Asia
Discover last-minute flight deals from Kathmandu to Southeast Asia. Data last updated 23 April 2026 and is based on user searches.

One-way flights from Kathmandu to Southeast Asia
Search for one-way flight options from Kathmandu to Southeast Asia. Find affordable one-way fares based on user searches. Data last updated 23 April 2026.