How long is the flight from Kathmandu to Southeast Asia?

A quick flight from Kathmandu to Southeast Asia can take about 3h 30m. Singapore Airlines provides one of the quickest options available for as low as £361. 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 £84. Thai AirAsia flights start at £84 while deals on Nepal Airlines start at £135 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 £204. On average you can expect to pay £459. The most popular route, (Kathmandu Tribhuvan - Bangkok Suvarnabhumi), can usually be booked for £274.

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.

£156+ 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 26 March 2026.

Fri 15/507:35

KTM

BKK

1 stop8h 05m

Air India

Sun 24/515:15

BKK

KTM

1 stop9h 00m

Air India

Deal found 24/3£273

Thu 7/514:40

KTM

BKK

1 stop22h 20m

Air India

Thu 14/508:40

BKK

KTM

1 stop9h 05m

Air India

Deal found 23/3£274

Sat 11/406:45

KTM

BKK

1 stop12h 25m

Air India

Fri 1/522:25

BKK

KTM

1 stop9h 25m

Air India

Deal found 23/3£276

Sun 22/314:55

KTM

BKK

1 stop24h 45m

Air India

Sun 29/317:55

BKK

KTM

1 stop13h 55m

Air India

Deal found 21/3£297

Mon 30/306:45

KTM

BKK

1 stop23h 40m

Air India

Fri 3/422:25

BKK

KTM

1 stop9h 25m

Air India

Deal found 22/3£308

Tue 24/310:05

KTM

BKK

1 stop29h 35m

Air India

Sun 29/308:40

BKK

KTM

1 stop9h 05m

Air India

Deal found 22/3£317

Mon 30/311:10

KTM

BKK

Nonstop3h 20m

Nepal Airlines

Fri 3/416:45

BKK

KTM

Nonstop3h 30m

Nepal Airlines

Deal found 22/3£318

Sat 11/406:45

KTM

BKK

1 stop12h 25m

Multiple Airlines

Fri 1/516:45

BKK

KTM

Nonstop3h 30m

Multiple Airlines

Deal found 23/3£320

Fri 15/511:10

KTM

BKK

Nonstop3h 20m

Multiple Airlines

Sat 23/503:00

BKK

KTM

1 stop20h 45m

Multiple Airlines

Deal found 24/3£325

Mon 30/306:45

KTM

BKK

1 stop23h 40m

Multiple Airlines

Fri 3/416:45

BKK

KTM

Nonstop3h 30m

Multiple Airlines

Deal found 22/3£343

Sun 14/622:50

KTM

BKK

1 stop17h 10m

Singapore Airlines

Thu 18/613:35

BKK

KTM

1 stop9h 10m

Singapore Airlines

Deal found 23/3£344

Find flight deals from Kathmandu to Southeast Asia

Round-trip from	£273
One-way from	£156
Popular in	April
Cheapest in	July
Average price	£232

Air India
15/5-24/5
2 total stops
17h 05m total
Kathmandu to Southeast Asia

Search Deals

Air India
31/3
1 total stop
23h 40m total
Kathmandu to Southeast Asia

Search Deals

Highest demand for flights based on searches. 15% potential increase in price (£29 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£6 potential savings vs. average return price).

Search Deals

Average for round-trip flights in March 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

Sun 14/6

22:50-17:15

1 stop17h 10m

Bangkok Suvarnabhumi

Thu 18/6

13:35-21:30

1 stop9h 10m

£344

Fastest return journey

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Fri 15/5

13:30-18:15

Nonstop3h 30m

Bangkok Suvarnabhumi

Sun 24/5

10:15-12:25

Nonstop3h 25m

£361

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Wed 26/8

22:50-17:50

1 stop17h 45m

Bangkok Suvarnabhumi

Sun 30/8

20:15-21:30

1 stop26h 30m

£395

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Fri 5/6

22:45-16:20

1 stop16h 20m

Bangkok Suvarnabhumi

Sun 7/6

19:45-12:00

1 stop17h 30m

£404

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Sun 17/5

16:35-01:35

2 stops31h 45m

Bangkok Suvarnabhumi

Fri 22/5

19:15-15:35

2 stops21h 35m

£447

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Sat 18/7

16:35-18:10

2 stops24h 20m

Bangkok Suvarnabhumi

Tue 21/7

02:35-15:35

2 stops38h 15m

£544

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Sat 11/4

16:35-01:35

2 stops31h 45m

Bangkok Suvarnabhumi

Fri 17/4

13:35-15:35

3 stops51h 15m

£546

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Thu 16/4

16:35-14:55

1 stop21h 05m

Bangkok Suvarnabhumi

Fri 24/4

02:35-15:35

2 stops38h 15m

£547

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Tue 26/5

16:35-01:35

2 stops31h 45m

Bangkok Suvarnabhumi

Fri 29/5

03:00-15:35

2 stops37h 50m

£559

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Thu 23/4

16:35-01:35

2 stops31h 45m

Bangkok Suvarnabhumi

Mon 20/7

19:15-15:35

2 stops21h 35m

£572

Flights are sorted by cheapest return flights first.

Deals found on 21/3

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

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

Currently, January is the cheapest month in which you can book a flight from Kathmandu to Southeast Asia (average of £69). Flying from Kathmandu to Southeast Asia in May is currently the most expensive (average of £131). 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 evening. If you’re flexible enough to do this you can expect to save up to 24% on your trip compared to booking a flight at midday.

Reviews of airlines servicing Southeast Asia

See what other customers who have flown with Singapore Airlines and Malaysia 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

1,484 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Wee Keng,Dec 2025

HKG - SIN

Quick 3 hour flight with excellent service from the crew despite it being Christmas Day holiday. Ground crew passed out Xmas cookies as well. Great experience.

Singapore Airlines

8.2

Very Good

1,484 reviews

Singapore Airlines

8.2

Very Good

1,484 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Wee Keng,Dec 2025

HKG - SIN

Quick 3 hour flight with excellent service from the crew despite it being Christmas Day holiday. Ground crew passed out Xmas cookies as well. Great experience.

Malaysia Airlines

7.3

Good

298 reviews

Singapore Airlines

8.2

Very Good

1,484 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Wee Keng,Dec 2025

HKG - SIN

Quick 3 hour flight with excellent service from the crew despite it being Christmas Day holiday. Ground crew passed out Xmas cookies as well. Great experience.

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 3h 30m. Singapore Airlines provides one of the quickest options available for as low as £361. 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 £84. Thai AirAsia flights start at £84 while deals on Nepal Airlines start at £135 one-way.
What are the cheapest flights from Kathmandu to Southeast Asia?
The cheapest flight price from Kathmandu to Southeast Asia is £204. On average you can expect to pay £459. The most popular route, (Kathmandu Tribhuvan - Bangkok Suvarnabhumi), can usually be booked for £274.
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, January is the cheapest month in which you can book a flight from Kathmandu to Southeast Asia (average of £69). Flying from Kathmandu to Southeast Asia in May is currently the most expensive (average of £131). 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.

See more FAQs

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Alternative routes for Kathmandu to Southeast Asia

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Kathmandu to Suvarnabhumi flights

Top 5 airlines flying from Kathmandu to Southeast Asia

Airline	Cheapest	Average	Flexibility	On-time
Thai AirAsia	Cheapest£89	Average£186	FlexibilityNo cancel fee	On-time87%	Search Thai AirAsia flights
Thai Lion Air	Cheapest£147	Average£180	FlexibilityNo cancel fee	On-timeN/A	Search Thai Lion Air flights
Nepal Airlines	Cheapest£204	Average£242	FlexibilityNo cancel fee	On-timeN/A	Search Nepal Airlines flights
Thai Airways	Cheapest£227	Average£263	FlexibilityNo cancel fee	On-time77%	Search Thai Airways flights
Singapore Airlines	Cheapest£316	Average£386	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.

Can Cheapflights notify me if prices for flights from Kathmandu to Southeast Asia become cheaper?

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Cheap flights from Kathmandu to Southeast Asia from £156

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 31/3. 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 26 March 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 26 March 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 26 March 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 26 March 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 26 March 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 26 March 2026.

Last-minute flights from Kathmandu to Southeast AsiaDiscover last-minute flight deals from Kathmandu to Southeast Asia. Data last updated 26 March 2026 and is based on user searches.

Discover last-minute flight deals from Kathmandu to Southeast Asia. Data last updated 26 March 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 26 March 2026.

Search for one-way flight options from Kathmandu to Southeast Asia. Find affordable one-way fares based on user searches. Data last updated 26 March 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 26 March 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

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 26 March 2026.

Reviews of airlines servicing Southeast Asia

See what other customers who have flown with Singapore Airlines and Malaysia 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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Alternative routes for Kathmandu to Southeast Asia

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Complete your trip

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Kathmandu and Southeast Asia flights

Browse other Kathmandu and Southeast Asia flight options. Last updated on 26 March 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 26 March 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 26 March 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 26 March 2026.

Last-minute flights from Kathmandu to Southeast Asia
Discover last-minute flight deals from Kathmandu to Southeast Asia. Data last updated 26 March 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 26 March 2026.