S$ 292 Find Cheap Flights from Kathmandu to Southeast Asia – Compare and Save

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 21-9. 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.
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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

Thu, 13 Aug - Fri, 11 Sep
Multiple Airlines Logo
16:35 - 11:40
KTM
-
SIN
16h 50m
1 stop
Multiple Airlines Logo
13:10 - 20:10
SIN
-
KTM
9h 15m
1 stop
S$ 639Multiple Airlines
Tue, 25 Aug - Tue, 1 Sep
Air India Logo
17:30 - 07:25
KTM
-
SIN
11h 40m
1 stop
Air India Logo
08:45 - 20:10
SIN
-
KTM
13h 40m
2 stops
S$ 645Air India
Sun, 9 Aug - Fri, 11 Sep
Air India Logo
17:30 - 07:25
KTM
-
SIN
11h 40m
1 stop
Air India Logo
08:25 - 16:30
SIN
-
KTM
10h 20m
1 stop
S$ 649Air India
Sat, 19 Sep - Fri, 25 Sep
Multiple Airlines Logo
22:50 - 06:15
KTM
-
SIN
5h 10mdirect
Multiple Airlines Logo
23:00 - 09:05
SIN
-
KTM
12h 20m
1 stop
S$ 652Multiple Airlines
Tue, 6 Oct - Mon, 19 Oct
IndiGo Logo
10:50 - 17:45
KTM
-
SIN
28h 40m
1 stop
IndiGo Logo
19:45 - 13:05
SIN
-
KTM
19h 35m
1 stop
S$ 667IndiGo
Tue, 29 Sep - Wed, 30 Sep
Thai Airways Logo
00:25 - 11:15
KTM
-
SIN
8h 35m
1 stop
Thai Airways Logo
18:15 - 23:25
SIN
-
KTM
7h 25m
1 stop
S$ 668Thai Airways
Fri, 23 Oct - Wed, 28 Oct
Thai Airways Logo
00:25 - 19:40
KTM
-
SIN
17h 00m
1 stop
Thai Airways Logo
21:00 - 12:25
SIN
-
KTM
17h 40m
1 stop
S$ 676Thai Airways
Sun, 20 Sep - Wed, 23 Sep
Singapore Airlines Logo
22:50 - 06:15
KTM
-
SIN
5h 10mdirect
Singapore Airlines Logo
18:50 - 21:30
SIN
-
KTM
4h 55mdirect
S$ 683Singapore Airlines
Tue, 8 Sep - Sun, 13 Sep
Singapore Airlines Logo
22:50 - 06:15
KTM
-
SIN
5h 10mdirect
Singapore Airlines Logo
18:50 - 21:30
SIN
-
KTM
4h 55mdirect
S$ 697Singapore Airlines
Thu, 8 Oct - Tue, 13 Oct
IndiGo Logo
16:40 - 17:45
KTM
-
SIN
22h 50m
1 stop
IndiGo Logo
19:45 - 19:50
SIN
-
KTM
26h 20m
1 stop
S$ 733IndiGo
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 5 days was to Bangkok, at S$ 299 return. The most popular route is from Kathmandu (KTM) to Singapore (SIN), and the cheapest return airline ticket found on this route in the last 5 days was S$ 715.

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$ 745 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$ 745.

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$ 433, 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 March, when tickets cost S$ 698 (return) on average. On the other hand, the most expensive months are May and November, when the average cost of return tickets is S$ 921 and S$ 785 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, Thursday is the cheapest day to fly and Saturday 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 17% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 22 weeks before departure.

Good to know

Low season

July

Cheapest flight

S$ 292
Best time to beat the crowds (5% less expensive on average)
Most popular time to fly and prices are also 3% lower 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: Bangkok S$ 396 one-way - S$ 646 round-trip; Singapore S$ 500 one-way - S$ 718 round-trip

Reviews of the top 5 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 1584 reviews
7.8Food
8.0Comfort
8.6Crew
8.3Boarding
8.1Entertainment
Airline reviews

The quality and the quantity of food was terrible. I was starving to death at the end of the flight. Used serve 3 meals long time ago, now reduced to 2 meals during the 17 hours flight. Never offered wine or tea to us. We have to ask . Extremely hard to get the attention of the flight attendants. They intentionally ignore us to minimize the service. Bathrooms were dirty

2.0 MediocreSanku, Jul 2026
SIN - SFO
Read more Singapore Airlines reviews

The quality and the quantity of food was terrible. I was starving to death at the end of the flight. Used serve 3 meals long time ago, now reduced to 2 meals during the 17 hours flight. Never offered wine or tea to us. We have to ask . Extremely hard to get the attention of the flight attendants. They intentionally ignore us to minimize the service. Bathrooms were dirty

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.

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

The staff on the plane were attentive and friendly. The frustration with the cabin crew was that we were served second to special diet people. And, we were in economy section. The boarding staff was mediocre. Got scolded for requesting to sit with spouse on 14 hours long flight home. Was told they cannot break up families for us. Didn’t understand how we were denied sitting together as we are husband and wife. After many words of exchange, we were accommodated. Cleaning crew did a horrible job! Bathrooms were unsanitary or dirty from beginning of flight! Didn’t expect sparkling as its economy, but did except decent.

Crew and service was excellent, but passengers should be offered a welcome drink before take off which did not happen. Food was very good. Unfortunately the lie-flat bed in business class was one of the most uncomfortable I have experienced. The configuration forces you to sleep with your legs at an angle instead of in a straight line, plus there is very little padding on the bed so it wasn't possible to sleep for more than 2-3 hours on an 18 hour flight. For what the airlines charges for a business class ticket their hard product leaves a lot to be desired.

Fantastic patience when one of the passengers behind me was an absolute horrible, horrible person and the girls just kept smiling and doing their job with patience and kindness. Well, done to the crew.

A 16 hour flight from Singapore to Los Angeles had only 2 meals. Please make it 3 meals.

Once again the meal served was delicious - we got chicken rice

When boarding, after business class should be premium economy, but economy class already lined-up at the gate blocking premium economy to board. Singapore airline crew should done a better job to organize this chaos :( Thank you.

Cleanliness Help for boarding and sitting Food should have been better

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.

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

Terrible. It’s like they are stuck in the dark ages. I brought a standard carry on suitcase and a back pack - I was told I could only carry on 7kg per bag - in business class, I was forced to remove articles from the suitcase and put them into my backpack! That’s the most ridiculous thing I’ve ever encountered in all my years of flying. The two bags weighed the same amount but one could not be more than 7kg. Holy cow.

The boarding efficiency was good. A couple of the flight attendants did not seem in the best of moods. Overall it was a good experience.

Entertainment is limited with a relatively old catalogue. Wi-Fi never works and the cabin and lavatory had evidence of a lot of scuff marks and temporary repairs. Nothing unsafe, but a bit tatty in places.

The transfer from Domestic and International was a bit confusing but I am easily confused. I did not eat any food, but the food on the other leg was decent. It was nice they turned the lights off on the night flight. The plane was in good shape, but was a little cramped in economy and I am small. They gave me a customs form to fill out and nobody looked at it as I went through customs. Not a bad flight.

Increase the number of available films, including variety. All other aspects were great.

Check in was a disaster. 90 minutes and only 2 economy check in desks open. Had to rush to catch the flight.

Thai Airways is one of the best airlines in the business. Looking forward to fly again with them.

Food no choice just give it seams trying to finish what ever you have in hand

Jia yung was the flight attendant that made this a miserable flight.

AC not working, just slowly blowing room temperature air. Long taxi time does not help as well. Sweating all over the whole trip.

The IFE is quite unconvenient if using our own device. Not all passenger brought their own earphone/headphone.

Delayed for 45 minutes. Don't know what's the issue. Other than that, food was not to my satisfaction. However it's okay.

No recognition for one World Emerald member. Business class seat has flat bed

No recognition for one World Emerald member. I got row 1 in business class and it was pathetic. No leg space, cramped space, less recline

I had purchased extra leg room for all legs of the flight but due to a delay in leaving Perth I was put on another flight but with Emirates. My luggage was initially lost but later found and my suitcase was broken. I ended up losing my upgrades

Prompt and efficient boarding. New MH-awards streaming worked first time on my personal device.

On-time & very well priced. All you need on a short flight.

Paid for the seat 17D. I found that that seat has no lean back facilities

Flight was short but turbulent giving uneasy feeling :( ; although views were mesmerising ;)

झूठा है इंडिगो फ्लाइट में मील दिया नहीं जब शिकायत किया तो बोला आपको मिल चुका है

Flight cancelled after 4+ hour delay. Indigo created a nightmare scenario and showed the most callus attitude towards the passengers I will refer to them was IndiNoGo!

Crew members forgot to serve sandwiches after serving the coffee. Worst was the handling of bag. One of wheel was Broken making it useless. Though a complaint was registered and assured of compensation voucher equal to part cost of the new bag.

Level of service is definitely going down, cannot expect the same service as earlier

As usual invariably delayed Lots of time in getting chkd in baggage

Two times the gate was changed and flight got delayed

Cancelled flight probably not enough seats were filled. Mess up with luggage and it took 1.5 hrs to start dispersal on belt

Liked the XL seat, but didn't like the check-in process at the Delhi Airport gate 5B. Though I had paid for the priority boarding, there was mad rush at the gate and allowed whoever with might pushed in. Then at the gate we were picked up for compulsory checkin the hand baggage as the flight was full. There were any with more than 2 bags and massive cabin baggage. But they didn't dare to stop them.. Overall a very badly managed check-in process.

When landing in Hyderabad, the pilot made a hard landing. Everyone in the plane were shocked. The captain landed the plane hard and felt as if we were going to be thrown out from our seats. It was surprising the captain didn't apologize or make an announcement about. Again a surprise no crew acknowledge this. This was an odd experience!

Terrible. Air India canceled my flight out of Kathmandu because of airport constructions but did not tell me. They should not be selling night flights out of Kathmandu right now that they know they will not honor. The staff was terrible and not helpful with my rebooking or compensating me.

Flight leg to and from IAD/Delhi was good. The leg to and from Delhi/KTM was terrible.

Food not of any international or even Indian standard. We have many cuisine available but only paneer & sundry items. Improve & provide some good indian items. Entertainment website or channel out of order.

Their security process is excessive. We were checked when we got off our incoming plane, at the gate and up the stairs when boarding the plane. Come on.

Interment is zero tv wasn’t work phone charger plug doesn’t work moves doesn’t work

My inflight entertainment system didn’t work for the entire round trip ,16 hour flight without any inflight entertainment is tough

Flight crew were welcoming and attentive. The flight was on time and arrived a little early. Overall a very good flight!

Mumbai to Delhi aircraft was unfit for flying. Seats in front of me were broken and cracked , tray table falling apart. Seats loose shaking. During Take off and landing there were loud banging noises and plane almost drifting off the runway. Fight delayed by 2 hours. We're told by crew that it was due to technical issues, no wonder given the aircraft conditions it was flying in. Very old airplane

No organized boarding procedure and TV screens in most of the seats didnt work. For a 14 and half hour flight, without any entertainment made it much worse. Recliners in the seats were not working properly.

Everything you need to know for your flight to Southeast Asia

Information on your arrival and departure airports