Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Kathmandu to Southeast Asia from £186

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 20/5. Fares are subject to change and may not be available on all flights or dates of travel.
KTM — BKK
11 Jun — 18 Jun1
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 12 May 2026.

Mon 22/606:30
KTM
-
BKK
1 stop9h 10m
Air India
Mon 29/622:25
BKK
-
KTM
1 stop9h 25m
Air India
Deal found 8/5£275
Sat 1/821:10
KTM
-
BKK
1 stop9h 15m
Air India
Fri 7/822:25
BKK
-
KTM
1 stop11h 45m
Air India
Deal found 9/5£277
Wed 10/606:30
KTM
-
BKK
1 stop9h 10m
Air India
Wed 17/607:30
BKK
-
KTM
1 stop13h 55m
Air India
Deal found 11/5£281
Fri 12/606:30
KTM
-
BKK
1 stop12h 40m
Air India
Thu 25/622:25
BKK
-
KTM
1 stop9h 25m
Air India
Deal found 12/5£293
Wed 10/611:10
KTM
-
BKK
Nonstop3h 20m
Nepal Airlines
Wed 17/616:45
BKK
-
KTM
Nonstop3h 30m
Nepal Airlines
Deal found 11/5£294
Sat 17/1021:10
KTM
-
BKK
1 stop15h 50m
Air India
Mon 26/1022:20
BKK
-
KTM
1 stop9h 30m
Air India
Deal found 7/5£295
Mon 22/611:10
KTM
-
BKK
Nonstop3h 20m
Nepal Airlines
Mon 29/616:45
BKK
-
KTM
Nonstop3h 30m
Nepal Airlines
Deal found 8/5£308
Fri 12/613:30
KTM
-
BKK
Nonstop3h 30m
Thai Airways
Thu 25/610:15
BKK
-
KTM
Nonstop3h 25m
Thai Airways
Deal found 12/5£325

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 12 May 2026.

Round-trip from

£275

One-way from

£186

Popular in

May

Cheapest in

January

Average price

£299
Air India
  • Air India
  • 22/6-29/6
  • 2 total stops
  • 18h 35m total
  • Kathmandu to Southeast Asia
Search Deals
Air India
  • Air India
  • 20/5
  • 1 total stop
  • 29h 35m total
  • Kathmandu to Southeast Asia
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£25 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 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 12 May 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 30/7

22:45-08:55

2 stops32h 55m

Bangkok Suvarnabhumi

Fri 14/8

14:15-21:45

1 stop8h 45m

£401

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Sun 26/7

22:45-08:55

2 stops32h 55m

Bangkok Suvarnabhumi

Tue 4/8

14:15-21:45

1 stop8h 45m

£424

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Tue 7/7

22:45-08:55

2 stops32h 55m

Bangkok Suvarnabhumi

Tue 14/7

19:45-12:00

1 stop17h 30m

£424

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Sat 25/7

13:00-14:30

1 stop24h 15m

Bangkok Suvarnabhumi

Sat 8/8

18:40-21:45

1 stop28h 20m

£435

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Sun 21/6

16:35-14:55

1 stop21h 05m

Bangkok Suvarnabhumi

Wed 1/7

02:25-15:35

1 stop14h 25m

£451

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Sun 21/6

16:35-18:10

2 stops24h 20m

Bangkok Suvarnabhumi

Mon 29/6

19:15-15:35

2 stops21h 35m

£462

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Sat 23/5

16:35-12:20

1 stop18h 30m

Bangkok Suvarnabhumi

Tue 26/5

21:55-15:35

2 stops42h 55m

£463
Fastest return journey

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Sat 6/6

16:35-12:20

1 stop18h 30m

Bangkok Suvarnabhumi

Wed 10/6

02:10-15:35

2 stops14h 40m

£466

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Sun 7/6

16:35-14:55

1 stop21h 05m

Bangkok Suvarnabhumi

Sun 14/6

05:05-15:35

3 stops59h 45m

£467

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Thu 4/6

16:35-01:35

2 stops31h 45m

Bangkok Suvarnabhumi

Sat 13/6

13:20-15:35

1 stop27h 30m

£467

Flights are sorted by cheapest return flights first.

Deals found on 7/5

Showing 1-10 of 19 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

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 87 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.

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 £73). Flying from Kathmandu to Southeast Asia in May is currently the most expensive (average of £181). 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 12 May 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 57% on your trip compared to booking a flight at midday.

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 12 May 2026.

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 (2 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 12 May 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
1,511 reviews
Check prices

Overall

8.2

Boarding

8.3

Entertainment

8.0

Comfort

8.0

Crew

8.6

Food

7.8

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
1,511 reviews
Singapore Airlines
8.2
Very Good
1,511 reviews
Check prices

Overall

8.2

Boarding

8.3

Entertainment

8.0

Comfort

8.0

Crew

8.6

Food

7.8

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

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 21h 05m. Malaysia Airlines provides one of the quickest options available for as low as £451. 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 £80. Thai AirAsia flights start at £83 while deals on Nepal Airlines start at £134 one-way.

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

    The cheapest flight price from Kathmandu to Southeast Asia is £207. On average you can expect to pay £564. The most popular route, (Kathmandu Tribhuvan - Bangkok Suvarnabhumi), can usually be booked for £201.

  • 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 £73). Flying from Kathmandu to Southeast Asia in May is currently the most expensive (average of £181). 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 New Delhi flights
Kathmandu to Suvarnabhumi 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 12 May 2026.
AirlineCheapestAverageFlexibilityOn-time
Thai AirAsiaCheapest£88Average£176FlexibilityNo cancel feeOn-time87%
Search Thai AirAsia flights
Thai Lion AirCheapest£90Average£167FlexibilityNo cancel feeOn-timeN/A
Search Thai Lion Air flights
Nepal AirlinesCheapest£201Average£238FlexibilityNo cancel feeOn-timeN/A
Search Nepal Airlines flights
Thai AirwaysCheapest£220Average£254FlexibilityNo cancel feeOn-time77%
Search Thai Airways flights
Singapore AirlinesCheapest£322Average£397FlexibilityNo 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.