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Cheap flights from Kathmandu to Southeast Asia from £120

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 30/6. Fares are subject to change and may not be available on all flights or dates of travel.
KTM — BKK
6 May — 13 May1
1 adult

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 1 May 2025.

Round-trip from

£205

One-way from

£120

Popular in

April

Cheapest in

February

Average price

£287
Air India
  • Air India
  • 12/7-22/7
  • 2 total stops
  • 28h 00m total
  • Kathmandu to Southeast Asia
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SriLankan Airlines
  • SriLankan Airlines
  • 30/6
  • 1 total stop
  • 22h 25m total
  • Kathmandu to Southeast Asia
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£10 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£3 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 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 1 May 2025.

Sat 12/707:35KTM - BKK
1 stop11h 35mAir India
Tue 22/717:55BKK - KTM
1 stop16h 25mAir India
Deal found 30/4£205
Fri 11/700:25KTM - BKK
Nonstop3h 30mThai Airways
Tue 22/710:15BKK - KTM
Nonstop3h 25mThai Airways
Deal found 30/4£282
Fri 15/822:45KTM - BKK
1 stop13h 25mMalaysia Airlines
Thu 21/811:05BKK - KTM
1 stop11h 55mMalaysia Airlines
Deal found 30/4£304
Fri 11/700:25KTM - BKK
Nonstop3h 30mMultiple Airlines
Tue 22/713:55BKK - KTM
1 stop23h 55mMultiple Airlines
Deal found 30/4£311
Wed 1/1011:10KTM - BKK
Nonstop3h 20mNepal Airlines
Fri 17/1016:45BKK - KTM
Nonstop3h 30mNepal Airlines
Deal found 30/4£372
Sat 14/616:35KTM - BKK
2 stops22h 00mChina Eastern
Wed 18/607:50BKK - KTM
1 stop9h 00mChina Eastern
Deal found 30/4£418
Sat 14/623:30KTM - BKK
1 stop16h 05mChina Southern
Tue 17/603:00BKK - KTM
1 stop20h 45mChina Southern
Deal found 30/4£561
Sat 10/523:00KTM - BKK
1 stop23h 50mSingapore Airlines
Thu 15/501:05BKK - KTM
1 stop21h 55mSingapore Airlines
Deal found 29/4£590
Wed 8/1011:55KTM - BKK
1 stop27h 55mAir China
Fri 17/1003:15BKK - KTM
2 stops32h 55mAir China
Deal found 30/4£799
Tue 20/515:35KTM - BKK
1 stop14h 45mEmirates
Thu 22/502:15BKK - KTM
1 stop13h 35mEmirates
Deal found 30/4£1,497
Sat 12/710:05KTM - BKK
2 stops47h 45mQatar Airways
Mon 21/702:30BKK - KTM
1 stop15h 30mQatar Airways
Deal found 30/4£1,759

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 1 May 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

Sat 12/7

07:35-20:25

1 stop11h 35m

Bangkok Suvarnabhumi

Tue 22/7

17:55-09:05

1 stop16h 25m

£205

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Fri 11/7

00:25-05:10

Nonstop3h 30m

Bangkok Suvarnabhumi

Tue 22/7

10:15-12:25

Nonstop3h 25m

£282

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Fri 15/8

22:45-13:25

1 stop13h 25m

Bangkok Suvarnabhumi

Thu 21/8

11:05-21:45

1 stop11h 55m

£304

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Fri 11/7

00:25-05:10

Nonstop3h 30m

Bangkok Suvarnabhumi

Tue 22/7

13:55-12:35

1 stop23h 55m

£311

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Wed 1/10

11:10-15:45

Nonstop3h 20m

Bangkok Suvarnabhumi

Fri 17/10

16:45-19:00

Nonstop3h 30m

£370

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Sat 14/6

16:35-15:50

2 stops22h 00m

Bangkok Suvarnabhumi

Wed 18/6

07:50-15:35

1 stop9h 00m

£416

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Sat 14/6

23:30-16:50

1 stop16h 05m

Bangkok Suvarnabhumi

Tue 17/6

03:00-22:30

1 stop20h 45m

£481

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Sat 10/5

23:00-00:05

1 stop23h 50m

Bangkok Suvarnabhumi

Thu 15/5

01:05-21:45

1 stop21h 55m

£590

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Wed 8/10

11:55-17:05

1 stop27h 55m

Bangkok Suvarnabhumi

Fri 17/10

03:15-10:55

2 stops32h 55m

£799

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Fri 13/6

23:55-16:20

2 stops39h 10m

Bangkok Suvarnabhumi

Thu 19/6

03:40-23:05

1 stop20h 40m

£1,362

Flights are sorted by cheapest return flights first.

Deals found on 29/4

Showing 1-10 of 21 results
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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 1 May 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.

Rainfall in Southeast Asia by month

Plan your trip to Southeast Asia by taking into account the average rainfall totals by month.

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.

Temperature in Southeast Asia by month

Plan your trip to Southeast Asia by taking into account the average temperature totals by month.

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).

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 1 May 2025.
To help decide which airline to fly from Kathmandu to Southeast Asia, see what other customers have to say about Singapore Airlines, Emirates and Thai Airways. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.1
Very Good
1,292 reviews
Check prices

Boarding

8.2

Crew

8.6

Comfort

7.9

Food

7.7

Overall

8.1

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Gina,Dec 2024

BLR - SIN

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles
Singapore Airlines
8.1
Very Good
1,292 reviews
Singapore Airlines
8.1
Very Good
1,292 reviews
Check prices

Boarding

8.2

Crew

8.6

Comfort

7.9

Food

7.7

Overall

8.1

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Gina,Dec 2024

BLR - SIN

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles
Emirates
8.0
Very Good
3,215 reviews
Singapore Airlines
8.1
Very Good
1,292 reviews
Check prices

Boarding

8.2

Crew

8.6

Comfort

7.9

Food

7.7

Overall

8.1

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Gina,Dec 2024

BLR - SIN

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles
Thai Airways
7.7
Good
325 reviews
Singapore Airlines
8.1
Very Good
1,292 reviews
Check prices

Boarding

8.2

Crew

8.6

Comfort

7.9

Food

7.7

Overall

8.1

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Gina,Dec 2024

BLR - SIN

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles
China Southern
7.5
Good
96 reviews
Singapore Airlines
8.1
Very Good
1,292 reviews
Check prices

Boarding

8.2

Crew

8.6

Comfort

7.9

Food

7.7

Overall

8.1

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Gina,Dec 2024

BLR - SIN

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles
Qatar Airways
7.4
Good
3,563 reviews
Singapore Airlines
8.1
Very Good
1,292 reviews
Check prices

Boarding

8.2

Crew

8.6

Comfort

7.9

Food

7.7

Overall

8.1

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Gina,Dec 2024

BLR - SIN

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles

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.

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

    To fly one-way, consider booking your trip with SriLankan Airlines, which is currently one of the cheapest options available, starting at £120. Air India flights start at £153 while deals on Nepal Airlines start at £159 one-way.

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

    The cheapest flight price from Kathmandu to Southeast Asia is £213. On average you can expect to pay £384. The most popular route, (Kathmandu Tribhuvan - Bangkok Suvarnabhumi), can usually be booked for £371.

  • 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 Suvarnabhumi flights
Kathmandu to New Delhi flights

Top 8 airlines flying from Kathmandu to Southeast Asia

Discover the top 8 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 1 May 2025.
AirlineCheapestAverageFlexibilityOn-time
Thai AirAsiaCheapest£97Average£244FlexibilityNo cancel feeOn-time87%
Search Thai AirAsia flights
Thai Lion AirCheapest£173Average£252FlexibilityNo cancel feeOn-timeN/A
Search Thai Lion Air flights
Nepal AirlinesCheapest£183Average£278FlexibilityNo cancel feeOn-timeN/A
Search Nepal Airlines flights
Thai AirwaysCheapest£226Average£375FlexibilityNo cancel feeOn-time77%
Search Thai Airways flights
Biman BangladeshCheapest£253Average£271FlexibilityNo cancel feeOn-time45%
Search Biman Bangladesh flights
Air IndiaCheapest£286Average£341FlexibilityNo cancel feeOn-timeN/A
Search Air India flights
Malaysia AirlinesCheapest£288Average£455FlexibilityNo cancel feeOn-time67%
Search Malaysia Airlines flights
Singapore AirlinesCheapest£308Average£367FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights

Fly with Cheapflights

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

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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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