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Suvarnabhumi

$163+ Cheap flights from Kathmandu (KTM) to Suvarnabhumi (BKK)

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 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
KTM — BKK
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
1 adult, Economy
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Cheapflights Tip: The best prices from Kathmandu Tribhuvan to Bangkok Suvarnabhumi are usually found in July or June, booked 75 days in advance, depart on a Wednesday or Monday and return on a Tuesday

Cheap flight deals from Kathmandu to Suvarnabhumi

Discover tips and strategies to find the most affordable flight options for your journey from Kathmandu (KTM) to Suvarnabhumi (BKK). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 20, 2025.

Round-trip from

$304
(SmartFares)

One-way from

$163
(KAYAK)

Popular in

April

Cheapest in

July

Average price

$283

Good round-trip deal

$338 or less

Good one-way deal

$303 or less
From Kathmandu Tribhuvan to Bangkok Suvarnabhumi
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One-way flight from Kathmandu Tribhuvan to Bangkok Suvarnabhumi
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Highest demand for flights based on searches. 8% potential increase in price ($27 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Kathmandu Tribhuvan to Bangkok Suvarnabhumi.
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Price to beat on a one-way flight from Kathmandu Tribhuvan to Bangkok Suvarnabhumi.
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Find flight deals from Kathmandu to Suvarnabhumi

Cheapest flights from Kathmandu to Suvarnabhumi
Explore the most affordable flight options available from Kathmandu to Suvarnabhumi. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2025.

This KAYAK deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/31:35 pmKTM - BKK
1 stop22h 05mSriLankan Airlines
Sun 9/77:45 amBKK - KTM
1 stop29h 45mSriLankan Airlines
Deal found 8/20$308
This Trip.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/17:35 amKTM - BKK
1 stop11h 35mAir India
Thu 9/48:40 amBKK - KTM
1 stop15h 35mAir India
Deal found 8/18$311
This Trip.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/39:00 pmKTM - BKK
1 stop22h 10mAir India
Wed 9/108:40 amBKK - KTM
1 stop15h 35mAir India
Deal found 8/18$313
This Trip.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/311:10 amKTM - BKK
Nonstop3h 20mNepal Airlines
Wed 9/104:45 pmBKK - KTM
Nonstop3h 30mNepal Airlines
Deal found 8/18$316
This KAYAK deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/297:35 amKTM - BKK
1 stop11h 35mAir India
Fri 9/58:40 amBKK - KTM
1 stop15h 35mAir India
Deal found 8/19$317
This Trip.com deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/36:30 amKTM - BKK
1 stop12h 40mAir India
Sat 9/68:40 amBKK - KTM
1 stop15h 35mAir India
Deal found 8/20$318
This FlightHub deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/56:30 amKTM - BKK
1 stop12h 40mAir India
Fri 9/128:40 amBKK - KTM
1 stop15h 35mAir India
Deal found 8/18$322
This Expedia deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/241:15 pmKTM - BKK
1 stop15h 45mSriLankan Airlines
Wed 9/33:20 pmBKK - KTM
1 stop22h 10mSriLankan Airlines
Deal found 8/18$324
This FlightHub deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/26:30 amKTM - BKK
1 stop12h 40mAir India
Sat 9/68:40 amBKK - KTM
1 stop15h 35mAir India
Deal found 8/20$327
This Mytrip deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/275:30 pmKTM - BKK
1 stop22h 10mAir India
Thu 9/48:40 amBKK - KTM
1 stop23h 10mAir India
Deal found 8/18$328
This KAYAK deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/199:00 pmKTM - BKK
1 stop9h 25mAir India
Fri 10/38:40 amBKK - KTM
1 stop15h 35mAir India
Deal found 8/17$331

Cheapflights Fare Finder

 
Customize your flight search to find flights from Kathmandu to Suvarnabhumi 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 2,558,603 searches. Data last updated August 20, 2025.
Use the filters below to find and compare flights from Kathmandu to Bangkok Suvarnabhumi Airport that are best for you.

Fly from

Kathmandu

Fly to

Suvarnabhumi

Route

Depart

Return

Price

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Wed 2/4

1:40 pm-6:20 am

1 stop15h 25m

Bangkok Suvarnabhumi

Tue 2/17

9:00 am-12:40 pm

1 stop28h 55m

$304

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Wed 2/11

1:40 pm-12:35 pm

1 stop21h 40m

Bangkok Suvarnabhumi

Wed 2/25

9:00 am-11:50 am

1 stop28h 05m

$304

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Wed 9/3

1:35 pm-12:55 pm

1 stop22h 05m

Bangkok Suvarnabhumi

Sun 9/7

7:45 am-12:15 pm

1 stop29h 45m

$308

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Fri 9/5

11:10 am-3:45 pm

Nonstop3h 20m

Bangkok Suvarnabhumi

Fri 9/12

4:45 pm-7:00 pm

Nonstop3h 30m

$311

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Mon 9/1

7:35 am-8:25 pm

1 stop11h 35m

Bangkok Suvarnabhumi

Thu 9/4

8:40 am-11:00 pm

1 stop15h 35m

$311

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Wed 9/3

9:00 pm-8:25 pm

1 stop22h 10m

Bangkok Suvarnabhumi

Wed 9/10

8:40 am-11:00 pm

1 stop15h 35m

$313

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Wed 9/3

11:10 am-3:45 pm

Nonstop3h 20m

Bangkok Suvarnabhumi

Wed 9/10

4:45 pm-7:00 pm

Nonstop3h 30m

$316

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Sat 8/30

10:05 am-8:25 pm

1 stop9h 05m

Bangkok Suvarnabhumi

Sat 9/6

8:40 am-11:00 pm

1 stop15h 35m

$317

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Wed 9/3

6:30 am-8:25 pm

1 stop12h 40m

Bangkok Suvarnabhumi

Sat 9/6

8:40 am-11:00 pm

1 stop15h 35m

$318

KathmanduBangkok

KTM - BKK

KTMBKK

Kathmandu Tribhuvan

Thu 1/15

12:50 pm-6:20 am

1 stop16h 15m

Bangkok Suvarnabhumi

Tue 1/20

1:55 pm-12:40 pm

1 stop24h 00m

$321

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/18

Showing 1-10 of 18 results
1
2

The best insider tips for Kathmandu to Bangkok Suvarnabhumi Airport flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Kathmandu to Bangkok Suvarnabhumi Airport trip
Airports
KTM

Arrive 3 hours early for check-in, security, and immigration at KTM. Web check-in can speed up the process.

Read more about KTMby Sharad Ranabhat
BKK

Use the Airport Rail Link for a quick 20-minute ride to Bangkok's city center from BKK.

Read more about BKKby Robert Schrader
Our travel experts
Robert Schrader

Robert Schrader

Expert on BKK

Robert Schrader

Robert Schrader

One of the web's original travel bloggers, Robert launched his first site Leave Your Daily Hell in 2009. Since then, he's expanded into destination niche sites (one each for Japan, Thailand and Taiwan), in addition to having written for the inflight magazines of Singapore Airlines and Korean Air. Overall, he's visited nearly 100 countries, and flies business as often as possible.

Read more
Sharad Ranabhat

Sharad Ranabhat

Expert on KTM

Sharad Ranabhat

Sharad Ranabhat

Sharad, a Nepal-based aviation journalist, is passionate about uncovering the latest in airline news and airport reviews. When he's not diving into the world of aviation, you’ll find him exploring new destinations and sharing stories that connect and inspire.

Read more

Best time to book a flight from Kathmandu to Suvarnabhumi

Have a flexible travel schedule? Discover the best time to fly to Suvarnabhumi from Kathmandu with our price prediction graph.
Estimated round-trip 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 Bangkok Suvarnabhumi Airport

How far ahead should I book a flight from Kathmandu to Bangkok Suvarnabhumi Airport?

Use this chart to determine the optimal time to book a round-trip flight from Kathmandu to Suvarnabhumi. Price data was last updated on August 8, 2025.

The price you pay for your flight from Kathmandu to Bangkok Suvarnabhumi Airport may vary depending on when you book. For the best chance of a lower fare, look to book 75 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Kathmandu to Bangkok Suvarnabhumi Airport?

Currently, September is the cheapest month in which you can book a flight from Kathmandu to Bangkok Suvarnabhumi Airport (average of $931). Flying from Kathmandu to Bangkok Suvarnabhumi Airport in December is currently the most expensive (average of $1,546). 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 BKK?

Find hourly flight availability from Kathmandu to Suvarnabhumi. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 20, 2025.

When flying from Kathmandu to Bangkok Suvarnabhumi Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 55% versus a flight in the evening.

What is the cheapest day to fly from Kathmandu to Bangkok Suvarnabhumi Airport?

Use this chart to determine the cheapest time to fly round-trip from Kathmandu to Suvarnabhumi. Price data was last updated on August 17, 2025.

Travelers seeking maximum savings on their Kathmandu to Bangkok Suvarnabhumi Airport flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Tuesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Kathmandu to Bangkok Suvarnabhumi Airport?

Reviews of airlines servicing Suvarnabhumi

Get insights into the airlines that provide service to Suvarnabhumi. 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 Suvarnabhumi. Reviews last updated August 20, 2025.
Get a feel of what it's like to fly with Thai Airways and Thai AirAsia from Kathmandu to Bangkok Suvarnabhumi Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Thai Airways
7.8
Good
344 reviews

Food

7.3

Boarding

7.9

Crew

8.3

Entertainment

6.9

Comfort

7.5

Overall

7.8

Reviews

1 / 18
10.0
Excellent

Joe,Jun 2025

BKK - TPE

The flight was very comfortable, and I really appreciated that each seat had an electric outlet to charge devices. The staff was great.
Thai Airways
7.8
Good
344 reviews
Thai Airways
7.8
Good
344 reviews

Food

7.3

Boarding

7.9

Crew

8.3

Entertainment

6.9

Comfort

7.5

Overall

7.8

Reviews

1 / 18
10.0
Excellent

Joe,Jun 2025

BKK - TPE

The flight was very comfortable, and I really appreciated that each seat had an electric outlet to charge devices. The staff was great.
Thai AirAsia
7.5
Good
216 reviews
Thai Airways
7.8
Good
344 reviews

Food

7.3

Boarding

7.9

Crew

8.3

Entertainment

6.9

Comfort

7.5

Overall

7.8

Reviews

1 / 18
10.0
Excellent

Joe,Jun 2025

BKK - TPE

The flight was very comfortable, and I really appreciated that each seat had an electric outlet to charge devices. The staff was great.

Related info for your journey

Find useful and relevant information for your journey from Kathmandu to Suvarnabhumi. 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 Bangkok Suvarnabhumi?

    If you book a flight to Bangkok Suvarnabhumi from Kathmandu, you will be flying from Tribhuvan, which is the city’s only airport. Kathmandu Tribhuvan (KTM) is located 2.5 mi from the center of Kathmandu. There are 2 flights from Tribhuvan to Bangkok Suvarnabhumi per day from 6 different airlines.

  • How long is the flight from Kathmandu to Bangkok Suvarnabhumi Airport?

    Departing from Kathmandu to Bangkok Suvarnabhumi Airport will take you 3h 20m. The distance between Kathmandu and Bangkok Suvarnabhumi Airport is about 1384 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Kathmandu to Bangkok Suvarnabhumi Airport round-trip?

    Our cheapest airline available from Kathmandu to Bangkok Suvarnabhumi Airport is Thai Lion Air. Our recent data shows that you can find tickets from as low as $156 on this airline. Additional options worth looking into are Thai AirAsia and Air India, starting at $170 and $280 round-trip. Thai Lion Air is priced at 49% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest flights from Kathmandu to Bangkok Suvarnabhumi Airport?

    Looking for the cheapest flight from Kathmandu to Bangkok Suvarnabhumi Airport? While on average our users pay $505, our data indicates the cheapest price to be $194. The most popular route (Kathmandu Tribhuvan - Bangkok Suvarnabhumi), is priced around $125.

  • Can I find deals for flights from Kathmandu to Suvarnabhumi that include hotel bookings?

    Yes. In addition to deals on Kathmandu to Suvarnabhumi flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Kathmandu to Suvarnabhumi?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Kathmandu to Suvarnabhumi.

  • Can I find deals for business class flights from Kathmandu to Suvarnabhumi?

    Yes. Cheapflights offers flight deals from Kathmandu to Suvarnabhumi 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 Bangkok Suvarnabhumi Airport?

    Currently, September is the cheapest month in which you can book a flight from Kathmandu to Bangkok Suvarnabhumi Airport (average of $931). Flying from Kathmandu to Bangkok Suvarnabhumi Airport in December is currently the most expensive (average of $1,546). 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

Traveling to a place near Bangkok Suvarnabhumi Airport?

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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Kathmandu to Suvarnabhumi

See prices for flight routes from nearby airports that may be better suited for you.
Kathmandu to Don Mueang Intl flights

Top 6 airlines flying from Kathmandu to Suvarnabhumi

Discover the top 6 airlines that operate flights from Kathmandu to Suvarnabhumi. 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 2,558,603 searches. Data last updated August 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Thai Lion AirCheapest$156Average$296FlexibilityNo cancel feeOn-timeN/A
Thai AirAsiaCheapest$170Average$262FlexibilityNo cancel feeOn-time87%
Air IndiaCheapest$280Average$422FlexibilityNo cancel feeOn-timeN/A
Nepal AirlinesCheapest$283Average$364FlexibilityNo cancel feeOn-timeN/A
Thai AirwaysCheapest$332Average$423FlexibilityNo cancel feeOn-time77%
Biman BangladeshCheapest$340Average$377FlexibilityNo cancel feeOn-time45%

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