Cheap Flights from Kathmandu to Bangkok Suvarnabhumi

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Flight deals from Kathmandu to Bangkok Suvarnabhumi

Looking for a cheap last-minute deal or the best return flight from Kathmandu to Bangkok Suvarnabhumi? Find the lowest prices on one-way and return tickets right here.

Bangkok.ر.ق.‏ 555 per passenger.Departing Wed, 11 Mar.One-way flight with SriLankan Airlines.Outbound indirect flight with SriLankan Airlines, departs from Kathmandu on Wed, 11 Mar, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From ر.ق.‏ 555, select.

Bangkok.ر.ق.‏ 559 per passenger.Departing Sun, 3 Aug.One-way flight with SriLankan Airlines.Outbound indirect flight with SriLankan Airlines, departs from Kathmandu on Sun, 3 Aug, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From ر.ق.‏ 559, select.

Bangkok.ر.ق.‏ 576 per passenger.Departing Mon, 1 Sep.One-way flight with SriLankan Airlines.Outbound indirect flight with SriLankan Airlines, departs from Kathmandu on Mon, 1 Sep, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From ر.ق.‏ 576, select.

Bangkok.ر.ق.‏ 577 per passenger.Departing Sun, 27 Jul.One-way flight with SriLankan Airlines.Outbound indirect flight with SriLankan Airlines, departs from Kathmandu on Sun, 27 Jul, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From ر.ق.‏ 577, select.

Bangkok.ر.ق.‏ 579 per passenger.Departing Sun, 15 Feb.One-way flight with SriLankan Airlines.Outbound indirect flight with SriLankan Airlines, departs from Kathmandu on Sun, 15 Feb, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From ر.ق.‏ 579, select.

Bangkok.ر.ق.‏ 582 per passenger.Departing Wed, 18 Jun.One-way flight with SriLankan Airlines.Outbound indirect flight with SriLankan Airlines, departs from Kathmandu on Wed, 18 Jun, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From ر.ق.‏ 582, select.

Bangkok.ر.ق.‏ 599 per passenger.Departing Sun, 4 Jan.One-way flight with SriLankan Airlines.Outbound indirect flight with SriLankan Airlines, departs from Kathmandu on Sun, 4 Jan, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From ر.ق.‏ 599, select.

Bangkok.ر.ق.‏ 599 per passenger.Departing Thu, 2 Oct.One-way flight with SriLankan Airlines.Outbound indirect flight with SriLankan Airlines, departs from Kathmandu on Thu, 2 Oct, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From ر.ق.‏ 599, select.

Find the cheapest month to fly from Kathmandu to Bangkok Suvarnabhumi

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Kathmandu to Bangkok Suvarnabhumi flights are currently cheapest in March.

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Direct flights from Kathmandu to Bangkok Suvarnabhumi

Kathmandu to Bangkok Suvarnabhumi: Alternative routes

Compare routes from Kathmandu to Bangkok below. You may find an airport to fly into that's cheaper, faster, or easier than Bangkok Suvarnabhumi.

Kathmandu to Bangkok: Flight information

The things to know before you go.

Cheapest flight found	ر.ق.‏ 555
Cheapest month to fly	March
Average flight time	3 hrs, 28 mins
Most popular airline	Thai Airways
Average flights per week	10

Finding cheap flights from Kathmandu to Bangkok Suvarnabhumi: Frequently asked questions

How much are return flights from Kathmandu to Bangkok Suvarnabhumi?

The best price we found for a return flight from Kathmandu to Bangkok Suvarnabhumi is ر.ق.‏ 1,040. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from Kathmandu to Bangkok Suvarnabhumi?

3 hours and 28 minutes is the average flight time from Kathmandu to Bangkok Suvarnabhumi.

Which airlines fly direct from Kathmandu to Bangkok Suvarnabhumi?

Thai Airways and Nepal Airlines fly direct from Kathmandu to Bangkok Suvarnabhumi.

How many flights are there a week from Kathmandu to Bangkok Suvarnabhumi?

As of June 2025, there are 10 flights per week flying from Kathmandu to Bangkok Suvarnabhumi.

When is the cheapest time to fly from Kathmandu to Bangkok Suvarnabhumi?

The cheapest month to fly from Kathmandu to Bangkok Suvarnabhumi is usually June 2025.

Which upcoming date is cheapest to fly from Kathmandu Airport to Bangkok Suvarnabhumi Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Kathmandu Airport to Bangkok Suvarnabhumi Airport on Wednesday, 25 June 2025.

Can I get a direct flight from Kathmandu Airport to Bangkok Suvarnabhumi Airport?

Yes – the average flight time is 3 hours and 28 minutes.

How can I find the best flight deal to Bangkok Suvarnabhumi?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Bangkok Suvarnabhumi but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Bangkok?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Bangkok is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly from Kathmandu Airport to Bangkok Suvarnabhumi with?

Currently, Nepal Airlines offers the cheapest flight tickets to Bangkok Suvarnabhumi.

Flying from Tribhuvan International Airport (KTM) to Suvarnabhumi Airport (BKK): what you need to know

Jump on a direct flight from Tribhuvan International Airport to Suvarnabhumi Airport and you'll be in the air for an average of 3 hours 25 minutes.
Bangkok's timezone is UTC+7, making Bangkok one hour 12 minutes ahead of Kathmandu.
Flights from KTM to BKK start at 00:25 — the first with Thai Airways International. The last departure is at 13:30 with Thai Airways International. Overall, you can choose from 17 weekly Tribhuvan International Airport to Suvarnabhumi Airport flights.
To ensure you get on your KTM to BKK flight, leave plenty of time for things like baggage drop and finding your gate. Turning up two hours before international departures and one hour before domestic flights is the general travel rule.
Flying during a peak time like September? School holidays and other high seasons can lead to longer queues and delays at check-in and security. Be extra cautious and arrive up to four hours ahead of international flights and two hours before domestic departures.
Travelling to Bangkok (and then seeing more of Thailand!) is a breeze with Nepal Airlines. This popular carrier offers direct flights from Tribhuvan International Airport to Suvarnabhumi Airport.
The airline with the highest number of bookings on this route is Nepal Airlines.
The carrier with the best on-time arrival rate for KTM to BKK flights is Thai Airways International.
If you want to add a stop to your trip, simply uncheck 'Direct flights only' when searching for your ticket from Tribhuvan International Airport to Suvarnabhumi Airport. Here are the top stopovers between KTM and BKK:
- Indira Gandhi International Airport
- Hong Kong International Airport
- Kuala Lumpur International Airport

How to find the cheapest flights from Tribhuvan International Airport (KTM) to Suvarnabhumi Airport (BKK)

ر.ق.‏ 555 is currently the lowest price for a one-way Tribhuvan International Airport to Suvarnabhumi Airport flight. Return flights start at ر.ق.‏ 1,040. These fares can change depending on availability and demand.
To score cheap tickets from KTM to BKK, book your trip eight months ahead of your departure.
Schedule your trip for July. That's the cheapest month for flights from Tribhuvan International Airport to Suvarnabhumi Airport. If you're flexible with your travel dates, try out the 'Whole month' tool to find the lowest price across each month.
You don't need to check every day to find out if fares have gone down when you create a Price Alert. We'll send you an update the moment a special offer becomes available on cheap flights from KTM to BKK.
Secure the perfect flight for you with the help of the filters. To see the 'Fastest,' 'Cheapest' or 'Best' flights from Tribhuvan International Airport to Suvarnabhumi Airport, use the 'Sort by' function. You can also filter results by airline, departure and arrival times, and journey duration.

Handy information about Tribhuvan International Airport (KTM)

Central Kathmandu to Tribhuvan International Airport is approximately 5 kilometres. Depending on traffic, it'll take you about 15 minutes to get there if you're ride-sharing, catching a cab or driving.
Taking an early flight from Tribhuvan International Airport to Suvarnabhumi Airport? Avoid the last-minute rush to the terminal (and enjoy a little extra shut-eye) by picking one of these hotels near KTM:

Arriving at Suvarnabhumi Airport (BKK)

The last thing you want is a long trip to your hotel if you're arriving on a late Tribhuvan International Airport to Suvarnabhumi Airport flight. Stay at one of these accommodation options near BKK instead:
Travel at your own pace with a Suvarnabhumi Airport rental car. Book your wheels from Chic Car Rent, asap car hire or Hertz and discover more of Bangkok and beyond.
Get the best deal by reserving your vehicle from Suvarnabhumi Airport around four weeks in advance of your trip.

Getting from Suvarnabhumi Airport (BKK) to central Bangkok

From Suvarnabhumi Airport, Bangkok is approximately 32 kilometres away. It takes around 35 minutes to drive to the centre.
It takes roughly 1 hour 5 minutes if you're travelling by public transport.

When to fly to Suvarnabhumi Airport (BKK)

July is the busiest month for flights from Tribhuvan International Airport to Suvarnabhumi Airport. To steer clear of the crowds, travel to Bangkok in April.
The warmest month in Bangkok is April, with temperatures ranging between 26ºC and 37ºC. Lock in your flights from Tribhuvan International Airport to Suvarnabhumi Airport in this month if you like this kind of weather.
December sees average temperatures of between 19ºC and 33ºC. Search for cheap tickets from KTM to BKK around that time if you'd rather travel in cooler conditions.

Explore more of Thailand

You've visited Bangkok, now it's time to explore other corners of Thailand. Journey about 467 kilometres north-east to Udon Thani to tick off its leading attractions. From Nong Prajak Public Park to Krom Luang Prachaksinlapakhom Monument and Chinesisches Tor, you'll have a packed itinerary ahead.
Chon Buri is another must-experience destination in Thailand and is around 64 kilometres south-east of Bangkok. No journey is complete without seeing Wat Ton Son, Forest and Phra Phutthasihing Hall.