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Cheap Flights from Colombo to Kathmandu

Compare Colombo to Kathmandu flight deals

Find the cheapest month or even day of the year to fly to Kathmandu

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Flight deals from Colombo to Kathmandu

Looking for a cheap last-minute deal or the best return flight from Colombo to Kathmandu? Find the lowest prices on one-way and return tickets right here.
Kathmandu.Rs56,856 per passenger.Departing Thu, 2 Jul.One-way flight with Air India.Outbound indirect flight with Air India, departs from Colombo Bandaranayake on Thu, 2 Jul, arriving in Kathmandu.Price includes taxes and charges.From Rs56,856, select.
Kathmandu.Rs56,974 per passenger.Departing Tue, 2 Jun.One-way flight with Air India.Outbound indirect flight with Air India, departs from Colombo Bandaranayake on Tue, 2 Jun, arriving in Kathmandu.Price includes taxes and charges.From Rs56,974, select.
Kathmandu.Rs57,099 per passenger.Departing Tue, 26 Jan.One-way flight with Air India.Outbound indirect flight with Air India, departs from Colombo Bandaranayake on Tue, 26 Jan, arriving in Kathmandu.Price includes taxes and charges.From Rs57,099, select.
Kathmandu.Rs57,099 per passenger.Departing Sun, 26 Apr.One-way flight with Air India.Outbound indirect flight with Air India, departs from Colombo Bandaranayake on Sun, 26 Apr, arriving in Kathmandu.Price includes taxes and charges.From Rs57,099, select.
Kathmandu.Rs57,182 per passenger.Departing Sun, 20 Sep.One-way flight with Air India.Outbound indirect flight with Air India, departs from Colombo Bandaranayake on Sun, 20 Sep, arriving in Kathmandu.Price includes taxes and charges.From Rs57,182, select.
Kathmandu.Rs57,300 per passenger.Departing Tue, 27 Oct.One-way flight with Air India.Outbound indirect flight with Air India, departs from Colombo Bandaranayake on Tue, 27 Oct, arriving in Kathmandu.Price includes taxes and charges.From Rs57,300, select.
Kathmandu.Rs57,300 per passenger.Departing Mon, 24 Aug.One-way flight with Air India.Outbound indirect flight with Air India, departs from Colombo Bandaranayake on Mon, 24 Aug, arriving in Kathmandu.Price includes taxes and charges.From Rs57,300, select.
Kathmandu.Rs57,629 per passenger.Departing Tue, 24 Mar.One-way flight with Air India.Outbound indirect flight with Air India, departs from Colombo Bandaranayake on Tue, 24 Mar, arriving in Kathmandu.Price includes taxes and charges.From Rs57,629, select.

Find the cheapest month to fly from Colombo to Kathmandu

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Colombo to Kathmandu flights are currently cheapest in July.
Feb
from Rs73,436
Mar
from Rs57,629
Apr
from Rs57,099
May
from Rs57,725
Jun
from Rs56,974
Jul
from Rs56,856
Aug
from Rs57,300
Sep
from Rs57,182
Oct
from Rs57,300
Nov
from Rs64,015
Dec
from Rs64,015
Jan
from Rs57,099

Direct flights from Colombo to Kathmandu

Colombo to Kathmandu: Alternative routes

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

Kathmandu

5km from central Kathmandu
ClosestCheapest
from Rs56,856
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Colombo to Kathmandu: Flight information

The things to know before you go.
Cheapest flight foundRs56,776
Cheapest month to flyJuly
Average flight time3 hrs, 35 mins
Most popular airlineSriLankan Airlines
Average flights per week10

Finding cheap flights from Colombo to Kathmandu: Frequently asked questions

The best price we found for a return flight from Colombo to Kathmandu is Rs98,411. 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.
3 hours and 35 minutes is the average flight time from Colombo to Kathmandu.
SriLankan Airlines flies direct from Colombo to Kathmandu.
As of February 2026, there are 5 flights per week flying from Colombo to Kathmandu.
The cheapest month to fly from Colombo to Kathmandu is usually August.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Colombo to Kathmandu Airport on Monday, 10 August 2026.
Yes – the average flight time is 3 hours and 35 minutes.
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 Kathmandu 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 Kathmandu is around 40 days in advance, so don’t leave your flight to the last minute.

Flying from Colombo to Tribhuvan International Airport (KTM): What you need to know

  • Bandaranaike International Airport (CMB) is Colombo's main airport. Check out your options for reserving a flight from Colombo to Tribhuvan International Airport (KTM) leaving from here.

  • The timezone in Kathmandu is UTC+5:47, which is 17 minutes ahead of Colombo. Tribhuvan International Airport is located in Kathmandu.

  • Arriving two hours before an international flight and one hour ahead of a domestic departure are travel rules to live by. Make sure you're at the airport on time to board your flight from Colombo to KTM.

  • If you're heading away during a major holiday or other peak period, give yourself extra time. Arrive two hours ahead of domestic flights and up to four hours before international departures. Security and check-in lines will be longer.

Airports in Colombo

Colombo Ratmalana Airport (RML)

  • Located around 16 kilometres from central Colombo, RML can be reached in about 40 minutes by car, depending on traffic. The journey on public transport takes roughly 1 hour 15 minutes.

  • Catching an early flight from Colombo to Tribhuvan International Airport? Avoid the stress of rushing to the terminal (and catch some extra z's) by staying at one of these stays near Colombo Ratmalana Airport:

Bandaranaike International Airport (CMB)

  • Think about setting out from Bandaranaike International Airport (CMB). You can book a direct Colombo to Tribhuvan International Airport (KTM) flight ticket from this popular hub.

  • SriLankan Airlines offers direct flights from Colombo to KTM out of CMB. Book your favourite seat and get to your destination in a single stretch.

  • SriLankan Airlines is the most frequently booked airline flying from CMB to KTM.

  • With 71.43% of services landing on schedule, SriLankan Airlines is the most punctual carrier flying between Bandaranaike International Airport and Tribhuvan International Airport.

  • Experience more along the way with a stopover on your flight from Colombo to Tribhuvan International Airport. Check out these connections between Bandaranaike International Airport and KTM:

    • Indira Gandhi International Airport (DEL)

    • Kuala Lumpur International Airport (KUL)

    • Chhatrapati Shivaji International Airport (BOM)

  • You can get to CMB from the centre of Colombo in approximately 40 minutes by car, depending on traffic. The ride on public transport takes roughly 1 hour 30 minutes to travel the 32 kilometres or so.

  • Want to treat yourself to an extra night away before catching your Colombo to KTM flight? Relax in a hotel near Bandaranaike International Airport before your adventure officially starts. These stays are calling your name:

  • 75.71% of flights out of Bandaranaike International Airport meet their expected arrival time.

About Tribhuvan International Airport (KTM)

  • Consider staying in a hotel close to KTM if you have a late flight from Colombo to Tribhuvan International Airport. Choose one of these options and skip the long transfer:

  • Go beyond Kathmandu and explore places that aren't on most itineraries with your own wheels. You can pick up a Tribhuvan International Airport rental car from Spark Car.

  • To lock in the lowest price, reserve your ride around one week in advance of your Colombo to Tribhuvan International Airport flight.

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

  • Currently, Rs56,856 is the lowest price we've found for a one-way ticket from Colombo to Tribhuvan International Airport. The cheapest price for a return flight is Rs98,411. Remember fares can change due to demand at the time of booking.

  • Book 11 months before you want to fly. Pricing trends show that this is the ideal window for finding cheap flights from Colombo to KTM.

  • Organise your trip for April. That's the best month for scoring an incredible deal on Colombo to Tribhuvan International Airport tickets. If your travel dates are flexible, use the 'Whole month' tool to find the cheapest price across every month.

  • You don't need to check back in every day to find out if fares have dropped when you set up a Price Alert. We'll notify you when there's a better deal on flight tickets from Colombo to KTM.

  • Filters make it easier to land a deal on your flight from Colombo to Tribhuvan International Airport. Pick the airlines, flight times and number of stops that check all your boxes. Then sort the results by 'Cheapest' to find the best price quickly.

The best time to fly from Colombo to Tribhuvan International Airport (KTM)

  • It's time to work out when to book your flight from Colombo to Tribhuvan International Airport (KTM). October is when most people travel to Kathmandu. If you're all about a more relaxed kind of trip, go in February.

  • Book a Colombo to KTM flight ticket departing in June if you're eager to experience the city during its warmest month. Expect temperatures in Kathmandu to range from 17ºC to 28ºC.

  • January sees temperatures of between 3ºC and 18ºC. Search for cheap tickets from Colombo to Tribhuvan International Airport around that time if you want to travel when it's cooler.

More about Kathmandu

  • When it comes to searching for somewhere to lay your head, you'll find the most popular stays in Kathmandu right here. Check out these options once you've booked your flight from Colombo to Tribhuvan International Airport:

  • Your trip to Kathmandu should come with a bit of sightseeing. Attractions you can't miss include Kathmandu Durbar Square, Annapurna Base Camp Trek and Himalaya Discovery.

Explore more of Nepal

  • Kathmandu has loads to offer, but there are so many other corners of Nepal you should also see. About 145 kilometres north-west of Kathmandu, a trip to Pokhara will keep your itinerary packed. Check out popular attractions like Viewpoint, Pokhara Lakeside and Sarangkot sunrise pokhara.

  • Around 241 kilometres south-east of Kathmandu, Biratnagar is another essential stop in Nepal. Experience the best of this destination with a visit to Haleshi Mahadev Mandir, Birateshwor Shiva Temple and Shiva Mandir.

Plan the rest of your trip from Colombo to Kathmandu

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