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Cheap flights from Kathmandu to Southeast Asia from £148

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 17/9. Fares are subject to change and may not be available on all flights or dates of travel.
KTM — BKK
2 Aug — 9 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Kathmandu to Southeast Asia

Enter your travel dates to find the best prices.

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 3 July 2026.

Wed 11/1121:40
KTM
-
BKK
1 stop15h 15m
Air India
Sun 22/1122:20
BKK
-
KTM
1 stop27h 10m
Air India
Deal found 2/7£334
Thu 6/800:25
KTM
-
BKK
Nonstop3h 30m
Thai Airways
Thu 13/810:15
BKK
-
KTM
Nonstop3h 25m
Thai Airways
Deal found 30/6£337
Thu 13/813:30
KTM
-
BKK
Nonstop3h 30m
Thai Airways
Thu 20/821:15
BKK
-
KTM
Nonstop3h 25m
Thai Airways
Deal found 29/6£339
Wed 11/1100:25
KTM
-
BKK
Nonstop3h 30m
Multiple Airlines
Sun 22/1117:55
BKK
-
KTM
2 stops21h 05m
Multiple Airlines
Deal found 2/7£341
Fri 31/706:30
KTM
-
BKK
1 stop22h 45m
Air India
Sat 19/922:25
BKK
-
KTM
1 stop23h 00m
Air India
Deal found 2/7£343
Tue 10/1100:25
KTM
-
BKK
Nonstop3h 30m
Multiple Airlines
Sun 22/1115:10
BKK
-
KTM
1 stop10h 20m
Multiple Airlines
Deal found 2/7£344
Fri 7/811:10
KTM
-
BKK
Nonstop3h 20m
Multiple Airlines
Thu 13/814:40
BKK
-
KTM
2 stops17h 10m
Multiple Airlines
Deal found 30/6£351
Thu 13/812:30
KTM
-
BKK
1 stop25h 15m
Biman Bangladesh
Thu 20/816:15
BKK
-
KTM
1 stop26h 00m
Biman Bangladesh
Deal found 29/6£354
Tue 7/716:35
KTM
-
BKK
1 stop28h 25m
China Eastern
Mon 13/702:25
BKK
-
KTM
1 stop14h 25m
China Eastern
Deal found 2/7£365
Sat 4/716:35
KTM
-
BKK
1 stop26h 00m
China Eastern
Wed 29/713:20
BKK
-
KTM
1 stop27h 30m
China Eastern
Deal found 1/7£366

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 3 July 2026.

Round-trip from

£334

One-way from

£148

Popular in

May

Cheapest in

March

Average price

£232
Air India
  • Air India
  • 11/11-22/11
  • 2 total stops
  • 42h 25m total
  • Kathmandu to Southeast Asia
Search Deals
Thai Airways
  • Thai Airways
  • 17/9
  • Nonstop
  • 3h 30m total
  • Kathmandu to Southeast Asia
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (£38 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

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 3 July 2026.
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

Thu 13/8

12:30-15:00

1 stop25h 15m

Bangkok Suvarnabhumi

Thu 20/8

16:15-17:00

1 stop26h 00m

£354

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Thu 30/7

16:35-22:15

1 stop28h 25m

Bangkok Suvarnabhumi

Sat 22/8

07:50-15:35

1 stop9h 00m

£403

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Sat 15/8

16:35-14:55

1 stop21h 05m

Bangkok Suvarnabhumi

Mon 24/8

15:55-15:35

1 stop24h 55m

£429

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Thu 20/8

16:35-12:20

1 stop18h 30m

Bangkok Suvarnabhumi

Mon 24/8

15:55-15:35

1 stop24h 55m

£429
Fastest return journey

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Tue 28/7

16:35-12:20

1 stop18h 30m

Bangkok Suvarnabhumi

Tue 18/8

07:50-15:35

1 stop9h 00m

£430

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Sun 12/7

16:35-22:15

1 stop28h 25m

Bangkok Suvarnabhumi

Fri 17/7

19:15-15:35

2 stops45h 35m

£435

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Sun 12/7

16:35-18:10

2 stops24h 20m

Bangkok Suvarnabhumi

Wed 15/7

02:25-15:35

1 stop14h 25m

£435

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Mon 31/8

13:00-08:55

2 stops18h 40m

Bangkok Suvarnabhumi

Fri 4/9

09:05-21:45

1 stop13h 55m

£439

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Mon 27/7

22:45-08:55

2 stops32h 55m

Bangkok Suvarnabhumi

Mon 17/8

18:40-12:00

1 stop18h 35m

£458
Cheapest one-way

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Tue 7/7

16:35-01:20

2 stops31h 30m

£229

Flights are sorted by cheapest return flights first.

Deals found on 2/7

Showing 1-10 of 16 resultsSorted by cheapest first
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, October is the cheapest month in which you can book a flight from Kathmandu to Southeast Asia (average of £74). Flying from Kathmandu to Southeast Asia in May is currently the most expensive (average of £185). 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 3 July 2026.

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 71% on your trip compared to booking a flight in the afternoon.

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 3 July 2026.

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

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 71 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.

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 3 July 2026.
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
1,557 reviews
Check prices

Crew

8.6

Comfort

8.0

Overall

8.2

Entertainment

8.1

Boarding

8.3

Food

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SIN - JNB

Cabin crew in business class was just so amazing, friendly, caring and professional
Singapore Airlines
8.2
Very Good
1,557 reviews
Singapore Airlines
8.2
Very Good
1,557 reviews
Check prices

Crew

8.6

Comfort

8.0

Overall

8.2

Entertainment

8.1

Boarding

8.3

Food

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SIN - JNB

Cabin crew in business class was just so amazing, friendly, caring and professional

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 25h 15m. Biman Bangladesh provides one of the quickest options available for as low as £354. 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 £81. 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 £166. On average you can expect to pay £299. The most popular route, (Kathmandu Tribhuvan - Bangkok Suvarnabhumi), can usually be booked for £266.

  • 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 £74). Flying from Kathmandu to Southeast Asia in May is currently the most expensive (average of £185). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 5 airlines flying from Kathmandu to Southeast Asia

Discover the top 5 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 3 July 2026.
AirlineCheapestAverageFlexibilityOn-time
Thai AirAsiaCheapest£90Average£138FlexibilityNo cancel feeOn-time87%
Search Thai AirAsia flights
Thai Lion AirCheapest£92Average£187FlexibilityNo cancel feeOn-timeN/A
Search Thai Lion Air flights
Nepal AirlinesCheapest£205Average£230FlexibilityNo cancel feeOn-timeN/A
Search Nepal Airlines flights
Thai AirwaysCheapest£225Average£313FlexibilityNo cancel feeOn-time77%
Search Thai Airways flights
Singapore AirlinesCheapest£317Average£406FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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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