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Cheap flights from Kathmandu to Bangkok from $147

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Kathmandu to Bangkok departing on 9/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Thai Airways Logo
12:25 am - 5:10 amKTM-BKK
3h 30mnonstop
Thai Airways Logo
9:15 pm - 11:25 pmBKK-KTM
3h 25mnonstop
$320Thai Airways
Find Deal
Mon, Dec 8 - Sun, Dec 14
Nepal Airlines Logo
11:10 am - 3:45 pmKTM-BKK
3h 20mnonstop
Nepal Airlines Logo
4:45 pm - 7:00 pmBKK-KTM
3h 30mnonstop
$321Nepal Airlines
Find Deal
Fri, Jan 30 - Fri, Feb 6
SriLankan Airlines Logo
12:50 pm - 12:35 pmKTM-BKK
22h 30m1 stop
SriLankan Airlines Logo
9:00 am - 12:40 pmBKK-KTM
28h 55m1 stop
$322SriLankan Airlines
Find Deal
Thu, Jan 15 - Tue, Jan 20
Thai Airways Logo
12:25 am - 5:10 amKTM-BKK
3h 30mnonstop
Thai Airways Logo
10:15 am - 12:25 pmBKK-KTM
3h 25mnonstop
$324Thai Airways
Find Deal
Thu, Jan 29 - Fri, Feb 6
SriLankan Airlines Logo
1:15 pm - 12:55 pmKTM-BKK
22h 25m1 stop
SriLankan Airlines Logo
1:55 pm - 12:35 pmBKK-KTM
23h 55m1 stop
$332SriLankan Airlines
Find Deal
Mon, Oct 6 - Tue, Oct 21
Nepal Airlines Logo
11:10 am - 3:45 pmKTM-BKK
3h 20mnonstop
Nepal Airlines Logo
4:45 pm - 7:00 pmBKK-KTM
3h 30mnonstop
$340Nepal Airlines
Find Deal
Wed, Oct 1 - Fri, Oct 31
Air India Logo
6:30 am - 4:55 pmKTM-BKK
9h 10m1 stop
Air India Logo
3:15 pm - 11:45 pmBKK-KTM
9h 45m1 stop
$374Air India
Find Deal
Thu, Oct 9 - Fri, Oct 17
Biman Bangladesh Logo
4:00 pm - 3:00 pmKTM-BKK
21h 45m1 stop
Biman Bangladesh Logo
4:15 pm - 11:35 amBKK-KTM
20h 35m1 stop
$379Biman Bangladesh
Find Deal
Wed, Oct 29 - Sat, Nov 29
Biman Bangladesh Logo
4:00 pm - 3:00 pmKTM-BKK
21h 45m1 stop
Biman Bangladesh Logo
4:15 pm - 11:35 amBKK-KTM
20h 35m1 stop
$383Biman Bangladesh
Find Deal
Wed, Oct 29 - Wed, Nov 5
Air India Logo
5:30 pm - 4:55 pmKTM-BKK
22h 10m1 stop
Air India Logo
3:15 pm - 11:45 pmBKK-KTM
9h 45m1 stop
$384Air India
Find Deal
Tue, Oct 7 - Fri, Oct 17

SriLankan Airlines flights from Kathmandu to Bangkok Suvarnabhumi Airport

Our best SriLankan Airlines deals on Kathmandu to Bangkok Suvarnabhumi Airport flight tickets
SriLankan Airlines
Jan 15
KTM12:50 pmKathmandu Tribhuvan
22h 30m
1 stop
BKK12:35 pmBangkok Suvarnabhumi
Jan 20
BKK9:00 amBangkok Suvarnabhumi
28h 55m
1 stop
KTM12:40 pmKathmandu Tribhuvan
$322
Find similar
SriLankan Airlines
Oct 6
KTM1:15 pmKathmandu Tribhuvan
22h 25m
1 stop
BKK12:55 pmBangkok Suvarnabhumi
Oct 21
BKK1:55 pmBangkok Suvarnabhumi
23h 55m
1 stop
KTM12:35 pmKathmandu Tribhuvan
$332
Find similar
SriLankan Airlines
Oct 15
KTM1:35 pmKathmandu Tribhuvan
22h 05m
1 stop
BKK12:55 pmBangkok Suvarnabhumi
Oct 22
BKK3:20 pmBangkok Suvarnabhumi
22h 10m
1 stop
KTM12:15 pmKathmandu Tribhuvan
$335
Find similar

Nepal Airlines flights from Kathmandu to Bangkok Suvarnabhumi Airport

Our best Nepal Airlines deals on Kathmandu to Bangkok Suvarnabhumi Airport flight tickets
Nepal Airlines
Jan 30
KTM11:10 amKathmandu Tribhuvan
3h 20m
BKK3:45 pmBangkok Suvarnabhumi
Feb 6
BKK4:45 pmBangkok Suvarnabhumi
3h 30m
KTM7:00 pmKathmandu Tribhuvan
$321
Find similar
Nepal Airlines
Oct 1
KTM11:10 amKathmandu Tribhuvan
3h 20m
BKK3:45 pmBangkok Suvarnabhumi
Oct 31
BKK4:45 pmBangkok Suvarnabhumi
3h 30m
KTM7:00 pmKathmandu Tribhuvan
$340
Find similar
Nepal Airlines
Oct 20
KTM11:10 amKathmandu Tribhuvan
3h 20m
BKK3:45 pmBangkok Suvarnabhumi
Oct 24
BKK4:45 pmBangkok Suvarnabhumi
3h 30m
KTM7:00 pmKathmandu Tribhuvan
$358
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Kathmandu to Bangkok Suvarnabhumi Airport 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, momondo users made 832,500 searches. Data last updated September 17, 2025.
Use the filters below to find and compare flights from Kathmandu to Bangkok Suvarnabhumi Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Mon 12/8

12:25 am-5:10 am

Nonstop3h 30m

Bangkok Suvarnabhumi

Sun 12/14

9:15 pm-11:25 pm

Nonstop3h 25m

$320

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Fri 1/30

11:10 am-3:45 pm

Nonstop3h 20m

Bangkok Suvarnabhumi

Fri 2/6

4:45 pm-7:00 pm

Nonstop3h 30m

$321

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Thu 1/15

12:50 pm-12:35 pm

1 stop22h 30m

Bangkok Suvarnabhumi

Tue 1/20

9:00 am-12:40 pm

1 stop28h 55m

$322

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Thu 1/29

12:25 am-5:10 am

Nonstop3h 30m

Bangkok Suvarnabhumi

Fri 2/6

10:15 am-12:25 pm

Nonstop3h 25m

$324

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Mon 10/6

1:15 pm-12:55 pm

1 stop22h 25m

Bangkok Suvarnabhumi

Tue 10/21

1:55 pm-12:35 pm

1 stop23h 55m

$332

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Wed 10/1

11:10 am-3:45 pm

Nonstop3h 20m

Bangkok Suvarnabhumi

Fri 10/31

4:45 pm-7:00 pm

Nonstop3h 30m

$340

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Thu 10/9

6:30 am-4:55 pm

1 stop9h 10m

Bangkok Suvarnabhumi

Fri 10/17

3:15 pm-11:45 pm

1 stop9h 45m

$374

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Wed 10/29

4:00 pm-3:00 pm

1 stop21h 45m

Bangkok Suvarnabhumi

Sat 11/29

4:15 pm-11:35 am

1 stop20h 35m

$379

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Wed 10/29

4:00 pm-3:00 pm

1 stop21h 45m

Bangkok Suvarnabhumi

Wed 11/5

4:15 pm-11:35 am

1 stop20h 35m

$383

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Tue 10/7

5:30 pm-4:55 pm

1 stop22h 10m

Bangkok Suvarnabhumi

Fri 10/17

3:15 pm-11:45 pm

1 stop9h 45m

$384

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Bangkok from

How to get the cheapest flight ticket from Kathmandu to Bangkok Suvarnabhumi Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Bangkok Suvarnabhumi Airport?

The month of July is, on average, the cheapest month to fly to Bangkok Suvarnabhumi Airport from Kathmandu, with most prices found around $246. The month of August is another great option to travel to Bangkok Suvarnabhumi Airport, with average flight prices from Kathmandu averaging around $258.

What is the cheapest day to depart on your flight to Bangkok Suvarnabhumi Airport?

The cheapest day to depart on your flight to Bangkok Suvarnabhumi Airport is on a Wednesday when prices can be found for as low as $506. This is often the case because there is less demand to fly during this day of the week. On the other hand, Tuesday is the most expensive day to depart from Kathmandu because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $641.

What is the cheapest time of day to depart on your flight to Bangkok Suvarnabhumi Airport?

Our most recent data shows that the best time of day to fly to Bangkok Suvarnabhumi Airport is in the afternoon. Flights from Kathmandu to Bangkok Suvarnabhumi Airport during this time can be as low as $268. In the evening is when there is more demand to fly to Bangkok Suvarnabhumi Airport, so prices are often more expensive at around $612 per ticket.

What is the cheapest Kathmandu Tribhuvan to Bangkok Suvarnabhumi flight route?

Fly from Kathmandu Tribhuvan to Bangkok Suvarnabhumi for the best Kathmandu Tribhuvan - Bangkok Suvarnabhumi flight prices

How far in advance should I book a flight to Bangkok Suvarnabhumi Airport?

You are more likely to see cheaper flights to Bangkok Suvarnabhumi Airport from Kathmandu when booking weeks ahead of your departure date. In general, you can expect to find flights to Bangkok Suvarnabhumi Airport for around $308 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bangkok Suvarnabhumi Airport from Kathmandu for as low as $235 on momondo.

What cabin class options are available on Kathmandu Tribhuvan to Bangkok Suvarnabhumi flights?

There are 3 cabin classes available to choose from on Kathmandu Tribhuvan to Bangkok Suvarnabhumi flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Kathmandu to Bangkok Suvarnabhumi Airport flights?

You could potentially save up to 17% on your flight if you consider stops on a Kathmandu to Bangkok Suvarnabhumi Airport flight.

How have Kathmandu to Bangkok Suvarnabhumi Airport flight prices changed over time?

As of September 2025, prices for Kathmandu to Bangkok Suvarnabhumi Airport flights are approximately 7% cheaper when compared to flights at the same time last year.

When to book flights from Kathmandu to Bangkok Suvarnabhumi Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Kathmandu to Bangkok Suvarnabhumi Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Kathmandu to Bangkok Suvarnabhumi Airport (KTM to BKK) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Kathmandu to Bangkok Suvarnabhumi Airport

Best Price Found

$278

Fastest flight time

3h 20m

Direct flights

Every day
The best one-way flight to Bangkok Suvarnabhumi Airport from Kathmandu in the past 72 hours is $278. The best round-trip flight deal from Kathmandu to Bangkok Suvarnabhumi Airport found on momondo in the last 72 hours is $353.
The fastest flight from Kathmandu to Bangkok Suvarnabhumi Airport takes 3h 20m
Direct flights go from Kathmandu to Bangkok Suvarnabhumi Airport every day.
Search flight deals

  • How far is Kathmandu Tribhuvan to Bangkok Suvarnabhumi by plane?

    The distance between Kathmandu Tribhuvan and Bangkok Suvarnabhumi is about 1386.5 mi. By plane, this route typically takes 3h 20m.

  • When did momondo last update prices for flights from Kathmandu Tribhuvan Airport to Bangkok Suvarnabhumi Airport?

    Prices for flights from Kathmandu Tribhuvan Airport to Bangkok Suvarnabhumi Airport were last updated today.

  • How many operators does momondo search for flights from Kathmandu Tribhuvan Airport to Bangkok Suvarnabhumi Airport?

  • How old do you have to be to fly from Kathmandu Tribhuvan Airport to Bangkok Suvarnabhumi Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Kathmandu Tribhuvan Airport to Bangkok Suvarnabhumi Airport.

  • What documentation or ID do you need to fly to Bangkok Suvarnabhumi Airport?

    The travel and health documents you'll need for your trip to Bangkok Suvarnabhumi Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Bangkok Suvarnabhumi Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Kathmandu to Bangkok Suvarnabhumi Airport?

  • What is the most popular airline from Kathmandu to Bangkok Suvarnabhumi Airport?

Best airlines flying from Kathmandu to Bangkok Suvarnabhumi Airport

Compare and see reviews for airlines that fly from Kathmandu to Bangkok Suvarnabhumi Airport with momondo
Airline
Rating
Free Cancellation
Price
Thai Lion AirPriceFrom $128Free CancellationRating
7.3
27 reviews
Search Thai Lion Air flights
Thai AirAsiaPriceFrom $173Free CancellationRating
7.5
216 reviews
Search Thai AirAsia flights
Air IndiaPriceFrom $280Free CancellationRating
5.5
2,932 reviews
Search Air India flights
Nepal AirlinesPriceFrom $283Free CancellationRating
5.8
11 reviews
Search Nepal Airlines flights
Thai AirwaysPriceFrom $328Free CancellationRating
7.8
350 reviews
Search Thai Airways flights
Biman BangladeshPriceFrom $340Free CancellationRating
6.7
23 reviews
Search Biman Bangladesh flights

  • Thai Airways Flights From Kathmandu to Bangkok Suvarnabhumi Airport

    Thai Airways flight deals from Kathmandu to Bangkok Suvarnabhumi Airport start from $328 round-trip. Over the 14 Thai Airways flights for this route in a normal week, average airfare is usually $427 round-trip - but some users have found much cheaper deals with momondo.

  • Nepal Airlines Flights From Kathmandu to Bangkok Suvarnabhumi Airport

    Another popular option for Kathmandu to Bangkok Suvarnabhumi Airport flights is Nepal Airlines (5.8/10, 11 ratings). Nepal Airlines flies from Kathmandu to Bangkok Suvarnabhumi Airport around 3 times per week, with deals starting from $283 round-trip and rising to an average price of around $361.

Traveling to a place near Bangkok?

Book flights to Bangkok if you plan to visit one of these locations
Pattaya
Ko Samet
Kanchanaburi
Ayutthaya
Chonburi
Cha-am
Ko Lan
Pak Chong
Sattahip
Phetchaburi

Why use momondo?

Why should I use momondo to find a flight deal from Kathmandu to Bangkok?

Finding the right flight to Bangkok from Kathmandu is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Bangkok quick and easy, saving you time and money.

Can I find flights from Kathmandu to Bangkok with flexible booking policies on momondo?

Yes. All flights to Bangkok from Kathmandu on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Kathmandu to Bangkok?

momondo provides multiple filters to help you find the best flight to Bangkok from Kathmandu. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Kathmandu to Bangkok right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Kathmandu to Bangkok flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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