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C$329 Cheap Flights from Kathmandu (KTM) to Samui International (USM)

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Flight deals from Kathmandu to Samui International

Looking for a cheap last-minute deal or the best return flight from Kathmandu to Samui International? Find the lowest prices on one-way and return tickets right here.
Koh Samui.C$329 per passenger.Departing Mon., Oct. 5.One-way flight with Thai AirAsia.Outbound indirect flight with Thai AirAsia, departs from Kathmandu on Mon., Oct. 5, arriving in Samui International.Price includes taxes and charges.From C$329, select.
Koh Samui.C$338 per passenger.Departing Mon., Feb. 22.One-way flight with Thai AirAsia.Outbound indirect flight with Thai AirAsia, departs from Kathmandu on Mon., Feb. 22, arriving in Samui International.Price includes taxes and charges.From C$338, select.
Koh Samui.C$372 per passenger.Departing Fri., Aug. 28.One-way flight with Thai AirAsia.Outbound indirect flight with Thai AirAsia, departs from Kathmandu on Fri., Aug. 28, arriving in Samui International.Price includes taxes and charges.From C$372, select.
Koh Samui.C$373 per passenger.Departing Wed., Nov. 11.One-way flight with Thai AirAsia.Outbound indirect flight with Thai AirAsia, departs from Kathmandu on Wed., Nov. 11, arriving in Samui International.Price includes taxes and charges.From C$373, select.
Koh Samui.C$421 per passenger.Departing Fri., May 8.One-way flight with Thai LionAir.Outbound indirect flight with Thai LionAir, departs from Kathmandu on Fri., May 8, arriving in Samui International.Price includes taxes and charges.From C$421, select.
Koh Samui.C$439 per passenger.Departing Fri., Jul. 10.One-way flight with Thai AirAsia.Outbound indirect flight with Thai AirAsia, departs from Kathmandu on Fri., Jul. 10, arriving in Samui International.Price includes taxes and charges.From C$439, select.
Koh Samui.C$494 per passenger.Departing Mon., Mar. 1.One-way flight with Air India.Outbound indirect flight with Air India, departs from Kathmandu on Mon., Mar. 1, arriving in Samui International.Price includes taxes and charges.From C$494, select.
Koh Samui.C$523 per passenger.Departing Wed., Apr. 29.One-way flight with Air India.Outbound indirect flight with Air India, departs from Kathmandu on Wed., Apr. 29, arriving in Samui International.Price includes taxes and charges.From C$523, select.
Koh Samui.C$618 per passenger.Departing Fri., Sep. 25.One-way flight with Thai Airways.Outbound indirect flight with Thai Airways, departs from Kathmandu on Fri., Sep. 25, arriving in Samui International.Price includes taxes and charges.From C$618, select.

Find the cheapest month to fly from Kathmandu to Samui International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Kathmandu to Samui International flights are currently cheapest in October.
Apr.
from C$523
May
from C$421
Jun.
Find prices
Jul.
from C$439
Aug.
from C$372
Sep.
from C$618
Oct.
from C$329
Nov.
from C$373
Dec.
Find prices
Jan.
Find prices
Feb.
from C$338
Mar.
from C$494

Kathmandu to Samui International: Alternative routes

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

Samui International

5km from central Koh Samui
ClosestCheapest
from C$329
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Kathmandu to Koh Samui: Flight information

The things to know before you go.
Cheapest flight foundC$329
Cheapest month to flyOctober

Finding cheap flights from Kathmandu to Samui International: Frequently asked questions

The best price we found for a return flight from Kathmandu to Samui International is C$743. 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.
Currently, there are no airlines that fly direct from Kathmandu to Samui International. But we found flights with one or more stops from C$743.
As of April 2026, there are no flights flying from Kathmandu to Samui International.
The cheapest month to fly from Kathmandu to Samui International is usually June.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Kathmandu Airport to Samui International Airport on Friday, June 5, 2026.
No airlines currently offer direct flights between Kathmandu Airport and Samui International Airport. Most routes have one or more stops.
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 Samui International 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.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Koh Samui is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Thai LionAir offers the cheapest flight tickets to Samui International.

Flying from Tribhuvan International Airport (KTM) to Koh Samui Airport (USM): what you need to know

  • During popular months such as October, it's a good idea to get to the airport earlier than usual. Arrive two hours before domestic departures and four hours ahead of international flights when you fly during a high season in general.

  • If you'd like to break up your flight from Tribhuvan International Airport to Koh Samui Airport, think about adding a stopover. Simply uncheck 'Direct flights only' to find a destination that catches your eye. The most popular stopovers on the KTM - USM route are:

    • Don Mueang International Airport

    • Suvarnabhumi Airport

    • Changi International Airport

  • To find out whether you need a visa to enter Thailand, check with your carrier and the local consulate or embassy. They'll have the most up-to-date details, including any other travel documents you may need after booking your cheap ticket from KTM to USM.

How to find the cheapest flights from Tribhuvan International Airport (KTM) to Koh Samui Airport (USM)

  • The best price we've found for a one-way ticket from Tribhuvan International Airport to Koh Samui Airport is C$329. The cheapest price for a return flight is C$743. Bear in mind that fares could change due to availability when booking.

  • It's usually best to book early if you're hoping to get cheap flight tickets from KTM to USM. That's because airlines adjust prices based on demand, which tends to rise closer to the date of departure.

  • If you can be flexible with your travel plans, use the 'Whole month' tool. It'll give you the lowest price across each month when searching for a ticket from Tribhuvan International Airport to Koh Samui Airport.

  • Log into your online account or use the app to set up a Price Alert. We'll get in touch straight away if there's a cheaper deal on this route. It's simple to do, and it'll save you the hassle of searching for cheap flight tickets from KTM to USM every day.

  • Use filters to tailor your flights from Tribhuvan International Airport to Koh Samui Airport. Select your ideal departure and arrival times, number of stops and airlines. Alternatively, sort your results by 'Cheapest' to find the best deals.

Handy information about Tribhuvan International Airport (KTM)

  • Tribhuvan International Airport is about 5 kilometres from central Kathmandu. If you're catching a cab, ride-sharing or driving from the center, it'll take 16 minutes or so to arrive, depending on the traffic.

  • Want a hassle-free start to your vacation? Stay near KTM. Whether you've booked an early flight from Tribhuvan International Airport to Koh Samui Airport or just don't want to be rushed, these hotels are just the thing:

Arriving at Koh Samui Airport (USM)

Getting from Koh Samui Airport (USM) to central Thailand

  • Koh Samui Airport to the center of Thailand is roughly 611 kilometres. If you're getting a cab or renting a car, do a little research to make your trip as easy as possible. Journey times can vary depending on traffic and the time of day.

When to fly to Koh Samui Airport (USM)

  • It's time to pick your trip dates for your flight from Tribhuvan International Airport to Koh Samui Airport. August is the most popular month to visit Thailand. If you like a more low-key vibe, go in February.

  • When reserving your flight from Tribhuvan International Airport to Koh Samui Airport, consider the type of weather you like. April is the warmest month in Thailand, with the temperature ranging from 24ºC to 41ºC.

  • Search for cheap flight tickets from KTM to USM in December if you'd rather travel during cooler conditions. Temperatures are at their lowest then, ranging between 16ºC and 32ºC on average.

More about Thailand

  • Book your flight from KTM to USM and then search for the perfect place to rest your head. Phutawan Resort is a popular choice in Thailand.

  • There are so many things to explore in this city it can be hard to know where to start. Wat Pu Muang, Wat Ma Muang Ched Ton and Wat Tha Luang are major attractions which should be on any good Thailand itinerary.

Complete your Koh Samui trip with hotels and a car rental

  • After you've secured your cheap ticket to Koh Samui Airport, browse our low prices and exclusive offers on hotels. You can also compare hundreds of car rental companies in one go to get the best car rental price for your Koh Samui escape.

Plan the rest of your trip from Kathmandu to Koh Samui

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.