S$ 275 Find Cheap Flights from Kathmandu to Southeast Asia

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Kathmandu to Southeast Asia departing on 16-10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Southeast Asia

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Kathmandu to Southeast Asia, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Kathmandu to Southeast Asia, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Kathmandu to Southeast Asia

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Kathmandu to Southeast Asia that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Kathmandu to Southeast Asia

Fri, 24 Jul - Tue, 28 Jul
Air India Logo
06:30 - 21:45
KTM
-
SIN
13h 00m
1 stop
Air India Logo
08:45 - 00:05
SIN
-
KTM
17h 35m
2 stops
S$ 538Air India
Thu, 8 Oct - Thu, 22 Oct
Air India Logo
10:05 - 07:25
KTM
-
SIN
19h 05m
1 stop
Air India Logo
08:45 - 00:05
SIN
-
KTM
17h 35m
2 stops
S$ 547Air India
Fri, 24 Jul - Tue, 28 Jul
Air India Logo
06:30 - 21:45
KTM
-
SIN
13h 00m
1 stop
Air India Logo
08:45 - 00:05
SIN
-
KTM
17h 35m
2 stops
S$ 561Air India
Fri, 24 Jul - Tue, 28 Jul
Air India Logo
06:30 - 21:45
KTM
-
SIN
13h 00m
1 stop
Air India Logo
08:25 - 06:35
SIN
-
KTM
24h 25m
1 stop
S$ 587Air India
Thu, 23 Jul - Thu, 30 Jul
Air India Logo
17:30 - 21:45
KTM
-
SIN
26h 00m
1 stop
Air India Logo
08:45 - 00:05
SIN
-
KTM
17h 35m
2 stops
S$ 597Air India
Mon, 27 Jul - Mon, 3 Aug
IndiGo Logo
10:50 - 17:45
KTM
-
SIN
28h 40m
1 stop
IndiGo Logo
10:45 - 14:10
SIN
-
KTM
29h 40m
1 stop
S$ 600IndiGo
Sun, 12 Jul - Sun, 19 Jul
Multiple Airlines Logo
16:35 - 11:40
KTM
-
SIN
16h 50m
1 stop
Multiple Airlines Logo
21:30 - 12:50
SIN
-
KTM
17h 35m
1 stop
S$ 602Multiple Airlines
Sun, 12 Jul - Sat, 18 Jul
Multiple Airlines Logo
16:35 - 11:40
KTM
-
SIN
16h 50m
1 stop
Multiple Airlines Logo
21:30 - 12:50
SIN
-
KTM
17h 35m
1 stop
S$ 604Multiple Airlines
Sun, 12 Jul - Sat, 18 Jul
Multiple Airlines Logo
16:35 - 11:40
KTM
-
SIN
16h 50m
1 stop
Multiple Airlines Logo
21:30 - 12:50
SIN
-
KTM
17h 35m
1 stop
S$ 610Multiple Airlines
Wed, 29 Jul - Sat, 5 Sep
IndiGo Logo
10:50 - 17:45
KTM
-
SIN
28h 40m
1 stop
IndiGo Logo
19:45 - 14:10
SIN
-
KTM
20h 40m
1 stop
S$ 613IndiGo
Booking Insights

KAYAK's insights & trends for Kathmandu to Southeast Asia flights

Get data-powered insights and trends into flights from Kathmandu to Southeast Asia to help you find the cheapest flights, the best time to fly, and much more.

What is the cheapest Kathmandu to Southeast Asia flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Southeast Asia from Kathmandu found in the last 72 hours was to Singapore, at S$ 651 return. The most popular route is from Kathmandu (KTM) to Singapore (SIN), and the cheapest round-trip airline ticket found on this route in the last 5 days was S$ 651.

What is the cheapest time of day to fly to Southeast Asia?

The average price for all round-trip flights from Kathmandu to Southeast Asia depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Southeast Asia is generally at night, when retur flights cost S$ 768 on average. The most expensive time of day to fly to Southeast Asia is generally at night, which is peak travel time and where the average cost of a ticket is S$ 768.

Can I save money by flying with a stopover from Kathmandu to Southeast Asia?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of S$ 464, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Kathmandu to Southeast Asia?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Kathmandu to Southeast Asia, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Kathmandu to Southeast Asia is October, when tickets cost S$ 127 (return) on average. On the other hand, the most expensive months are May and December, when the average cost of return tickets is S$ 318 and S$ 266 respectively.

What’s the cheapest day of the week to fly from Kathmandu to Southeast Asia?

The average price of all round-trip flights from Kathmandu to Southeast Asia clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Kathmandu to Southeast Asia, look for departures on Thursdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Southeast Asia, Tuesday is the cheapest day to fly and Sunday is the most expensive.

How far in advance should I book a flight from Kathmandu to Southeast Asia?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Kathmandu to Southeast Asia, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below-average price on a flight from Kathmandu to Southeast Asia, you should book around 9 weeks before departure, which saves you about 13% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 22 weeks before departure.

Good to know

Low seasonApril
Cheapest flightS$ 275
Best time to beat the crowds but there is an average 9% increase in price.
Most popular time to fly (3% more expensive on average)
Flight from Kathmandu to Singapore

FAQs - booking Southeast Asia flights

  • How does KAYAK find such low prices on flights from Kathmandu to Southeast Asia?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Kathmandu to Southeast Asia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Kathmandu to Southeast Asia?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Kathmandu to Southeast Asia is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Kathmandu to Southeast Asia?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from Kathmandu to Southeast Asia with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Kathmandu to Southeast Asia?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Kathmandu to Southeast Asia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Southeast Asia

  • Looking for a cheap flight? 25% of our users found tickets from Kathmandu to the following destinations at these prices or less: Singapore S$ 1,033 one-way - S$ 747 round-trip

Reviews of the top 3 airlines flying from Kathmandu to Southeast Asia

 
See real verified KAYAK customer reviews for airlines flying from Kathmandu to Southeast Asia. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Kathmandu to Southeast Asia? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.2
Singapore AirlinesOverall score based on 1543 reviews
8.6Crew
8.1Entertainment
8.3Boarding
8.0Comfort
7.8Food
Airline reviews

Flight attendants were awesome! Very helpful and patients. Some food were good but maybe not serving fish that kinda make the whole aircraft smell fishy. The “fried pork” was tasty but too much skin so it doesnt taste that great.

10.0 ExcellentMaria, Jun 2026
SEA - SIN
Read more Singapore Airlines reviews

Flight attendants were awesome! Very helpful and patients. Some food were good but maybe not serving fish that kinda make the whole aircraft smell fishy. The “fried pork” was tasty but too much skin so it doesnt taste that great.

Food was terrible , uncomfortable seats, WiFi did not work, will never fly Singapore again.

Fast and efficient flight. Wifi worked well. Food selection could have been better

Kayak really screwed up by offloading the booking to a third party. They were completely inept and caused a bunch of toil. I will never use Kayak again.

A little more room from the reclining seat in the front of me.

Crew is excellent Wifi needs to be improved in order to connect to the internet.

They ran out of the second choice of food was stuck with fish

First time flying with Singapore airlines and I’ll give them two thumbs up 👍 👍

The flight arrived on time. 2×2 seating meant no one needed to sit in the middle. This was a connectibf flight from Singapore and required going to 3 counters in different levels to check a golf bag

a completely full flight - felt quite carmped in, despite being on the window seat. Meal served could better. Surely different from pre-covid trips I used to take to and from Bangkok.

Gate and boarding processes were handled smoothly and efficiently. Both (connecting) flights departed and arrived on time. The cabin crew seemed anxious and a bit stressed/rushed. Food service was OK, but the hot food dishes were poor quality.

HAVING ANNOUNCEMENTS FOR PEOPLE TO BOARD ACCORDING TO GROUP IS ESSENTIAL N ENSURING N CUTTING OF QUEUES, EXCEPT FOR PRIORITY CLASS PASSENGERS ON A SEPARATE Q

We still get drinks and a snack. Love the gift bags too.

business class is old but still done very well by the team.

Excellent airline. The plane was clean and the staff were very attentive

Good experience although the boarding gate is at the terminal extension hence need to leave lounge to head over earlier.

Thai Royal First is very good. Easy check in , Private room in the first class lounge and escort from ticketing to the plane. Once on board crew was very polite, food was outstanding, and the ride was smooth as silk. Restrooms were especially clean. Great Experience

I'm not interested in improving the airline. Therefore, I won't explain this in more detail. Next time I'll try a different one.

The flight (boarding) was delayed by 40-50 minutes and there was very crowed. They need to improve on the timeliness & boarding process. (They asked passenger to board in groups, but the 2nd group was standing there waiting for 20 minutes!). However, services from the crew was very good, also the food was good as well. I also found the legroom was quite comfortable.

Need to improve on punctuality. My flight was delayed by 1 hour.

Terrible airline... Originally, the flight was canceled and didn't receive a notification, had to learn from their twitter account... Rebooking was a huge pain... Every other airline like American and United did eventually fly a day later... The flight had a layover, no other airline needed one... India is such a weak nation globally, this airline has no leverage to negotiate good airspace... Flight left late, again no notifications as to why at the airport. On the plane, wifi is spotty, chargers don't work... The only saving grace used to be good food. Even that has gone down the drain. Just the worst!

Never ever travel with Air India is a very conscious promise made to myself. Poor customer service , irresponsible staff, pathetic operations and bad planes. Overall -0/10. Planes had mosquitoes in it.. i am still thinking what international standards of hygiene are they even following????. Operations team has no quality standards. They can route you anywhere on any plane inspite of a confirmed ticket and a web checkin… without your consent. Go for AirIndia if you love challenges and roller coasters and safety, time and hygiene is never your priority.

tray table was inclined by 30 degress so could not use it

The plane was very dated with the worst entertainment system i have seen in 30 years. Flight attendants were responsive.

Food was below par Quality and None of the Entertainment systems were Working ..and we were unable to turn it off.. Due to the glare we couldn't even sleep for the entire duration of the flight ..

Very bad experience luggage never made to destination no help form airlines staff aircraft was old crappy forts staff service bad airlines staff

Food, choice of menu and quantity were poor. Crew services were even poorer, not attending call bittons

I reached the check in counter 1 hour before take off and was denied boarding because the luggage could no longer be transferred to the flight. I was aback when throughout the world(including India) for a domestic flight, you need to report 1 hour before boarding. Then on top of that i was made to buy a brand new ticket. I had paid $350 for a business ticket between delhi and mumbai and then was made to buy another economy ticket for $100, No concessions/discounts were made for the airline's own inefficiency! The reservation counter was also extremely rude and unapologetic about making me pay a second time. For such a mediocre airline, there seems to be zero focus on providing good service to their customers and providing a pleasant experience.

very run down aircraft. seat tilted. the mobile / magazine holder was broken. The entertainment screen was not working. The crew was good, polite and helpful

Never can get flight and nof light for three days .finally travel by bus. Very bad experience.

Everything you need to know for your flight to Southeast Asia

Information on your arrival and departure airports