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$123+ Cheap flights from Kathmandu (KTM) to Southeast Asia

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 11/1. Fares are subject to change and may not be available on all flights or dates of travel.
KTM — BKK
oct. 15 — oct. 221
mié. 10/15
mié. 10/22
1 adult, Economy
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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 septiembre 15, 2025.

Round-trip from

$229
(Booking.com)

One-way from

$123
(Trip.com)

Popular in

November

Cheapest in

June

Average price

$632
From Kathmandu Tribhuvan to Southeast Asia
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One-way flight from Kathmandu Tribhuvan to Southeast Asia
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Highest demand for flights based on searches. 5% potential increase in price ($36 potential increase over avg. RT price).
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Cheapest flight prices on average. 0% potential price decrease ($4 potential savings vs. average RT price).
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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 septiembre 15, 2025.

This Booking.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/183:00 pmKTM - DMK
Nonstop3h 20mThai AirAsia
lun. 10/2711:50 amDMK - KTM
Nonstop3h 25mThai AirAsia
Deal found 9/15$229
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 10/192:50 pmKTM - DMK
Nonstop3h 15mMultiple Airlines
sáb. 10/2512:00 pmDMK - KTM
Nonstop3h 15mMultiple Airlines
Deal found 9/15$231
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/92:15 pmKTM - DMK
Nonstop3h 20mMultiple Airlines
dom. 12/1411:50 amDMK - KTM
Nonstop3h 25mMultiple Airlines
Deal found 9/15$235
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/62:15 pmKTM - DMK
Nonstop3h 20mThai Lion Air
jue. 11/1311:00 amDMK - KTM
Nonstop3h 30mThai Lion Air
Deal found 9/15$237
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/162:50 pmKTM - DMK
Nonstop3h 15mMultiple Airlines
mié. 10/2911:50 amDMK - KTM
Nonstop3h 25mMultiple Airlines
Deal found 9/15$238
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/162:50 pmKTM - DMK
Nonstop3h 15mThai Lion Air
dom. 10/2611:00 amDMK - KTM
Nonstop3h 30mThai Lion Air
Deal found 9/15$239
This Booking.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/93:00 pmKTM - DMK
Nonstop3h 20mThai AirAsia
dom. 11/2311:50 amDMK - KTM
Nonstop3h 25mThai AirAsia
Deal found 9/15$245
This CheapOair deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/32:15 pmKTM - DMK
Nonstop3h 20mThai Lion Air
lun. 11/1011:00 amDMK - KTM
Nonstop3h 30mThai Lion Air
Deal found 9/15$247
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/162:50 pmKTM - DMK
Nonstop3h 15mMultiple Airlines
vie. 10/2412:00 pmDMK - KTM
Nonstop3h 15mMultiple Airlines
Deal found 9/15$248
This Booking.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/173:00 pmKTM - DMK
Nonstop3h 20mThai AirAsia
lun. 10/2711:50 amDMK - KTM
Nonstop3h 25mThai AirAsia
Deal found 9/15$253
This OneTravel deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure OneTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/32:15 pmKTM - DMK
Nonstop3h 20mThai Lion Air
vie. 11/711:00 amDMK - KTM
Nonstop3h 30mThai Lion Air
Deal found 9/15$254
This Gotogate deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/263:00 pmKTM - DMK
Nonstop3h 20mThai AirAsia
jue. 10/1612:00 pmDMK - KTM
Nonstop3h 15mThai AirAsia
Deal found 9/15$255

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated septiembre 15, 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 - DMK

KTMDMK

Kathmandu Tribhuvan

lun. 12/1

2:15 pm-6:50 pm

Nonstop3h 20m

Bangkok Don Mueang Intl

sáb. 12/6

11:00 am-1:15 pm

Nonstop3h 30m

$264

KathmanduBangkok

KTM - DMK

KTMDMK

Kathmandu Tribhuvan

dom. 11/16

2:15 pm-6:50 pm

Nonstop3h 20m

Bangkok Don Mueang Intl

sáb. 11/22

11:00 am-1:15 pm

Nonstop3h 30m

$265

KathmanduBangkok

KTM - DMK

KTMDMK

Kathmandu Tribhuvan

mié. 10/15

3:00 pm-7:35 pm

Nonstop3h 20m

Bangkok Don Mueang Intl

lun. 10/27

11:50 am-2:00 pm

Nonstop3h 25m

$277

KathmanduBangkok

KTM - DMK

KTMDMK

Kathmandu Tribhuvan

mié. 10/15

3:00 pm-7:35 pm

Nonstop3h 20m

Bangkok Don Mueang Intl

mié. 10/29

11:50 am-2:00 pm

Nonstop3h 25m

$277

KathmanduBangkok

KTM - DMK

KTMDMK

Kathmandu Tribhuvan

mié. 10/1

3:00 pm-7:35 pm

Nonstop3h 20m

Bangkok Don Mueang Intl

vie. 10/17

12:00 pm-2:00 pm

Nonstop3h 15m

$287

KathmanduBangkok

KTM - DMK

KTMDMK

Kathmandu Tribhuvan

jue. 10/9

3:00 pm-7:35 pm

Nonstop3h 20m

Bangkok Don Mueang Intl

jue. 10/16

12:00 pm-2:00 pm

Nonstop3h 15m

$292

KathmanduBangkok

KTM - DMK

KTMDMK

Kathmandu Tribhuvan

vie. 10/17

3:00 pm-7:35 pm

Nonstop3h 20m

Bangkok Don Mueang Intl

mar. 10/21

12:00 pm-2:00 pm

Nonstop3h 15m

$292

KathmanduBangkok

KTM - DMK

KTMDMK

Kathmandu Tribhuvan

mar. 10/14

3:00 pm-7:35 pm

Nonstop3h 20m

Bangkok Don Mueang Intl

dom. 10/26

11:50 am-2:00 pm

Nonstop3h 25m

$293

KathmanduBangkok

KTM - DMK

KTMDMK

Kathmandu Tribhuvan

dom. 10/12

3:00 pm-7:35 pm

Nonstop3h 20m

Bangkok Don Mueang Intl

dom. 10/26

11:50 am-2:00 pm

Nonstop3h 25m

$294

KathmanduBangkok

KTM - DMK

KTMDMK

Kathmandu Tribhuvan

vie. 10/10

3:00 pm-7:35 pm

Nonstop3h 20m

Bangkok Don Mueang Intl

dom. 10/26

11:50 am-2:00 pm

Nonstop3h 25m

$294

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 60 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 round-trip 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, September is the cheapest month in which you can book a flight from Kathmandu to Southeast Asia (average of $900). Flying from Kathmandu to Southeast Asia in December is currently the most expensive (average of $1,507). 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 septiembre 15, 2025.

When flying from Kathmandu to Southeast Asia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 septiembre 15, 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 septiembre 15, 2025.
Get a feel of what it's like to fly with Singapore Airlines, Thai Airways, and Thai AirAsia from Kathmandu to Southeast Asia by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.1
Very good
1,365 reviews

Overall

8.1

Food

7.7

Comfort

8.0

Boarding

8.2

Entertainment

8.0

Crew

8.6

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

Overall

8.1

Food

7.7

Comfort

8.0

Boarding

8.2

Entertainment

8.0

Crew

8.6

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

Overall

8.1

Food

7.7

Comfort

8.0

Boarding

8.2

Entertainment

8.0

Crew

8.6

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

Overall

8.1

Food

7.7

Comfort

8.0

Boarding

8.2

Entertainment

8.0

Crew

8.6

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

Overall

8.1

Food

7.7

Comfort

8.0

Boarding

8.2

Entertainment

8.0

Crew

8.6

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
Air India
5.5
Fair
2,930 reviews
Singapore Airlines
8.1
Very good
1,365 reviews

Overall

8.1

Food

7.7

Comfort

8.0

Boarding

8.2

Entertainment

8.0

Crew

8.6

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?

    For a flight from Kathmandu to Southeast Asia, you will be flying from Tribhuvan. Kathmandu Tribhuvan (KTM) is just 2.5 mi from the center of the city.

  • How long is the flight from Kathmandu to Southeast Asia?

    For as low as $264, Thai Lion Air can have you in Southeast Asia from Kathmandu in 3h 20m. The distance between Kathmandu and Southeast Asia is about 1366 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    For one-way options, check prices for Thai Lion Air. According to our data, you can fly for as low as $123. Users have also found prices from $127 and $167 on Thai AirAsia and SriLankan Airlines, respectively.

  • What are the most popular routes from Kathmandu to Southeast Asia?

    When deciding which route to take from Kathmandu to Southeast Asia consider Kathmandu Tribhuvan - Singapore Changi, Kathmandu Tribhuvan - Bangkok Suvarnabhumi or Kathmandu Tribhuvan - Bangkok Don Mueang Intl as they are the most popular.

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

    On average you can expect to pay $459 for a flight from Kathmandu to Southeast Asia. The cheapest flight overall is $190 while the most popular route, (Kathmandu Tribhuvan - Singapore Changi) is currently priced at $335.

  • 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 vacation 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, September is the cheapest month in which you can book a flight from Kathmandu to Southeast Asia (average of $900). Flying from Kathmandu to Southeast Asia in December is currently the most expensive (average of $1,507). 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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Top 9 airlines flying from Kathmandu to Southeast Asia

Discover the top 9 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 2,558,603 searches. Data last updated septiembre 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Thai Lion AirCheapest$128Average$292FlexibilityNo cancel feeOn-timeN/A
Thai AirAsiaCheapest$173Average$387FlexibilityNo cancel feeOn-time87%
Air IndiaCheapest$280Average$502FlexibilityNo cancel feeOn-timeN/A
Nepal AirlinesCheapest$283Average$361FlexibilityNo cancel feeOn-timeN/A
Thai AirwaysCheapest$328Average$574FlexibilityNo cancel feeOn-time77%
Biman BangladeshCheapest$340Average$394FlexibilityNo cancel feeOn-time45%
Malaysia AirlinesCheapest$375Average$610FlexibilityNo cancel feeOn-time67%
Singapore AirlinesCheapest$405Average$639FlexibilityNo cancel feeOn-time81%
China SouthernCheapest$560Average$836FlexibilityNo cancel feeOn-time69%

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