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Cheap flights from Kathmandu to Southeast Asia from £146

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 11/11. Fares are subject to change and may not be available on all flights or dates of travel.
KTM — BKK
16 Oct — 23 Oct1
1 adult
1 adult, Economy

Cheap 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 16 September 2025.

Round-trip from

£249

One-way from

£146

Popular in

April

Cheapest in

July

Average price

£219
China Southern
  • China Southern
  • 1/10-16/10
  • 2 total stops
  • 32h 10m total
  • Kathmandu to Southeast Asia
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Air India
  • Air India
  • 11/11
  • 1 total stop
  • 12h 40m total
  • Kathmandu to Southeast Asia
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£15 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£5 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2025
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Find flight deals from Kathmandu to Southeast Asia

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 16 September 2025.

Wed 1/1013:35KTM - BKK
1 stop22h 05mMultiple Airlines
Fri 17/1019:00BKK - KTM
1 stop18h 05mMultiple Airlines
Deal found 14/9£249
Sun 16/1100:25KTM - BKK
Nonstop3h 30mThai Airways
Thu 20/1110:15BKK - KTM
Nonstop3h 25mThai Airways
Deal found 14/9£261
Wed 1/1011:10KTM - BKK
Nonstop3h 20mNepal Airlines
Fri 17/1016:45BKK - KTM
Nonstop3h 30mNepal Airlines
Deal found 14/9£265
Wed 1/1014:00KTM - BKK
1 stop29h 10mAir India
Fri 17/1008:40BKK - KTM
1 stop16h 20mAir India
Deal found 16/9£272
Sat 4/1007:35KTM - BKK
1 stop11h 35mAir India
Sat 18/1015:15BKK - KTM
1 stop16h 35mAir India
Deal found 16/9£274
Wed 8/1007:35KTM - BKK
1 stop22h 50mAir India
Sat 18/1017:55BKK - KTM
1 stop13h 55mAir India
Deal found 16/9£288

Cheapflights Fare Finder

 
Customise your flight search to find flights from Kathmandu to Southeast Asia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 16 September 2025.
Use the filters below to find and compare flights from Kathmandu to Southeast Asia that are best for you.

Fly from

Kathmandu

Fly to

Southeast Asia

Route

Depart

Return

Price

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Thu 13/11

06:30-20:25

1 stop12h 40m

Bangkok Suvarnabhumi

Tue 18/11

15:15-23:00

1 stop9h 00m

£273

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Wed 8/10

06:30-20:25

1 stop12h 40m

Bangkok Suvarnabhumi

Sat 18/10

22:25-20:05

1 stop22h 55m

£273

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Wed 1/10

13:30-18:15

Nonstop3h 30m

Bangkok Suvarnabhumi

Fri 17/10

21:25-23:35

Nonstop3h 25m

£319

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Mon 17/11

13:30-18:15

Nonstop3h 30m

Bangkok Suvarnabhumi

Thu 20/11

10:15-12:25

Nonstop3h 25m

£322

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Thu 13/11

13:30-18:15

Nonstop3h 30m

Bangkok Suvarnabhumi

Tue 18/11

10:15-12:25

Nonstop3h 25m

£373

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Tue 7/10

00:35-05:20

Nonstop3h 30m

Bangkok Suvarnabhumi

Sat 18/10

21:25-23:35

Nonstop3h 25m

£380

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Sat 4/10

13:30-18:15

Nonstop3h 30m

Bangkok Suvarnabhumi

Sat 18/10

10:15-12:25

Nonstop3h 25m

£401

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Thu 13/11

12:20-17:20

1 stop27h 45m

Bangkok Suvarnabhumi

Mon 17/11

01:10-11:20

1 stop11h 25m

£461

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Tue 30/12

22:45-16:05

1 stop16h 05m

Bangkok Suvarnabhumi

Mon 5/1

20:05-12:00

1 stop17h 10m

£478

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Tue 11/11

06:30-20:25

1 stop12h 40m

£147

Flights are sorted by cheapest return flights first.

Deals found on 14/9

Showing 1-10 of 18 results
1
2

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.
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

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

Currently, May is the cheapest month in which you can book a flight from Kathmandu to Southeast Asia (average of £717). Flying from Kathmandu to Southeast Asia in December is currently the most expensive (average of £1,123). 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?

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 16 September 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Kathmandu to Southeast Asia as you normally would.

Weekly flight availability from Kathmandu to Southeast Asia

Explore weekly flight availability from Kathmandu to Southeast Asia. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 16 September 2025.

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 (1 on average).

Reviews of airlines servicing Southeast Asia

Get insights into the airlines that provide service to Southeast Asia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Southeast Asia. Reviews last updated 16 September 2025.
See what other customers who have flown with Singapore Airlines, Thai Airways, andThai AirAsia 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
8.1
Very Good
1,365 reviews
Check prices

Crew

8.6

Boarding

8.2

Entertainment

8.0

Food

7.7

Comfort

8.0

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered
Singapore Airlines
8.1
Very Good
1,365 reviews
Singapore Airlines
8.1
Very Good
1,365 reviews
Check prices

Crew

8.6

Boarding

8.2

Entertainment

8.0

Food

7.7

Comfort

8.0

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered
Thai Airways
7.8
Good
350 reviews
Singapore Airlines
8.1
Very Good
1,365 reviews
Check prices

Crew

8.6

Boarding

8.2

Entertainment

8.0

Food

7.7

Comfort

8.0

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered
Thai AirAsia
7.5
Good
216 reviews
Singapore Airlines
8.1
Very Good
1,365 reviews
Check prices

Crew

8.6

Boarding

8.2

Entertainment

8.0

Food

7.7

Comfort

8.0

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered
Malaysia Airlines
7.3
Good
278 reviews
Singapore Airlines
8.1
Very Good
1,365 reviews
Check prices

Crew

8.6

Boarding

8.2

Entertainment

8.0

Food

7.7

Comfort

8.0

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered

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?

    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. Air India provides one of the quickest options available for as low as £319. 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 Air India, which is currently one of the cheapest options available, starting at £147. Malaysia Airlines flights start at £171 while deals on Thai Airways start at £173 one-way.

  • What are the cheapest flights from Kathmandu to Southeast Asia?

    The cheapest flight price from Kathmandu to Southeast Asia is £154. On average you can expect to pay £471. The most popular route, (Kathmandu Tribhuvan - Bangkok Suvarnabhumi), can usually be booked for £189.

  • 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, May is the cheapest month in which you can book a flight from Kathmandu to Southeast Asia (average of £717). Flying from Kathmandu to Southeast Asia in December is currently the most expensive (average of £1,123). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Kathmandu to Southeast Asia

See prices for flight routes from nearby airports that may be better suited for you.
Kathmandu to New Delhi flights
Kathmandu to Suvarnabhumi flights

Top 6 airlines flying from Kathmandu to Southeast Asia

Discover the top 6 airlines that operate flights from Kathmandu to Southeast Asia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 16 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Thai AirAsiaCheapest£147Average£251FlexibilityNo cancel feeOn-time87%
Search Thai AirAsia flights
Thai Lion AirCheapest£159Average£235FlexibilityNo cancel feeOn-timeN/A
Search Thai Lion Air flights
Nepal AirlinesCheapest£171Average£283FlexibilityNo cancel feeOn-timeN/A
Search Nepal Airlines flights
Thai AirwaysCheapest£231Average£400FlexibilityNo cancel feeOn-time77%
Search Thai Airways flights
Singapore AirlinesCheapest£324Average£556FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
Malaysia AirlinesCheapest£366Average£436FlexibilityNo cancel feeOn-time67%
Search Malaysia Airlines flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Kathmandu to Southeast Asia?

Cheapflights helps you search for flights from Kathmandu to Southeast Asia via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Kathmandu to Southeast Asia?

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?

Yes! Start tracking prices for Kathmandu to Southeast Asia flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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