Cheap flights from Colombo to Kathmandu from $307 CMB → KTM
Bandaranaike International Airport (CMB) → Tribhuvan International Airport (KTM)
The cheapest return found recently is $496 with Air India, 14 Feb 2027 – 14 Mar 2027, found 2 days ago. The cheapest one-way found recently is $307 with SriLankan Airlines, 26 Nov, found 3 days ago.
- Cheapest one-way found recently
- $307, found 3 days ago
- Cheapest return found recently
- $496, 14 Feb 2027 to 14 Mar 2027
- Usual return price
- $507 to $564
- Cheapest month to fly
- November 2026, return fares from $441 found in the last 7 days
- Airlines with nonstop flights
- SriLankan Airlines
Return
The cheapest return fare on each of 7 departure dates is usually $507 to $564.
Cheapest return found recently
$496
14 Feb 2027 – 14 Mar 2027 · Air India
Bandaranaike International Airport (CMB) → Tribhuvan International Airport (KTM)
Leaves 12:00 p.m. · Return leaves 4:20 p.m. · 27 h 5 min of travel, both ways together
out 1 stop, back 1 stop · via Indira Gandhi International Airport (DEL) · overnight connection · 13 h connection
found 2 days ago
Cheapest nonstop return
$671
14 Feb 2027 – 14 Mar 2027 · SriLankan Airlines
Bandaranaike International Airport (CMB) → Tribhuvan International Airport (KTM)
Leaves 8:00 a.m. · Return leaves 4:25 p.m. · 7 h 10 min of travel, both ways together
out nonstop, back nonstop
found 2 days ago
Found recently, and the cheapest we hold
$496 14 Feb 2027 – 14 Mar 2027found 2 days agoSee prices for these dates
$441 26 Nov – 3 Decfound 3 days agoSee prices for these dates
What have prices looked like?
Over 47 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $441 to $653.
Those were the prices on those days, not today's.
Is this a good return price?
Compared with the cheapest return fare on each of 7 departure dates from 26 Nov to 4 Oct 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other 28-night return fares leaving within 3 days of 14 Feb 2027 to compare.
Every date we hold
83 fares on 7 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 26 Nov – 3 Dec | $441 | Air India | Bandaranaike International Airport (CMB) → Tribhuvan International Airport (KTM) | out 1 stop, back 1 stop | found 3 days ago | See prices for these dates |
| 24 Dec – 24 Dec | $547 | Air India | Bandaranaike International Airport (CMB) → Tribhuvan International Airport (KTM) | out 1 stop, back 1 stop | found 5 days ago | See prices for these dates |
| 27 Dec – 10 Jan 2027 | $573 | Air India | Bandaranaike International Airport (CMB) → Tribhuvan International Airport (KTM) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 12 Jan 2027 – 24 Jan 2027 | $566 | IndiGo | Bandaranaike International Airport (CMB) → Tribhuvan International Airport (KTM) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 14 Feb 2027 – 14 Mar 2027 | $496 | Air India | Bandaranaike International Airport (CMB) → Tribhuvan International Airport (KTM) | out 1 stop, back 1 stop | found 2 days ago | See prices for these dates |
| 29 Apr 2027 – 3 May 2027 | $518 | Air India | Bandaranaike International Airport (CMB) → Tribhuvan International Airport (KTM) | out 1 stop, back 1 stop | found 7 days ago | See prices for these dates |
| 4 Oct 2027 – 24 Oct 2027 | $561 | Air India | Bandaranaike International Airport (CMB) → Tribhuvan International Airport (KTM) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
Which month looks cheapest?
November 2026 is the cheapest month — from $441.
One-way
Not enough comparable prices yet for a usual one-way price.
Cheapest one-way found recently
$307
26 Nov · SriLankan Airlines
Bandaranaike International Airport (CMB) → Tribhuvan International Airport (KTM)
Leaves 8:00 a.m. · 3 h 35 min trip
stops unknown
found 3 days ago
Cheapest nonstop one-way
None seen yet.
Found recently, and the cheapest we hold
$307 26 Novfound 3 days agoOpen this trip
$263 16 Aug 2027found 4 days agoOpen this trip
What have prices looked like?
Over 48 days, 24 Sept to 11 Nov, the cheapest one-way we saw each day was $217 to $263.
At $307, the cheapest one-way found recently is above that range.
Those were the prices on those days, not today's.
Is this a good one-way price?
Not enough comparable prices yet: we hold one-way fares on 2 departure dates and need at least 3 to say what is usual.
Could nearby dates be cheaper?
We hold no other one-way fares leaving within 3 days of 26 Nov to compare.
Every date we hold
2 fares on 2 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 26 Nov | $307 | SriLankan Airlines | Bandaranaike International Airport (CMB) → Tribhuvan International Airport (KTM) | stops unknown | found 3 days ago | Open this trip |
| 16 Aug 2027 | $263 | Air India | Bandaranaike International Airport (CMB) → Tribhuvan International Airport (KTM) | 1 stop | found 4 days ago | Open this trip |
Which month looks cheapest?
August 2027 is the cheapest month — from $263.
Airlines on the cheapest dates: SriLankan Airlines, Air India.
Premium cabin fares from Colombo to Kathmandu
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 14 Feb 2027 – 14 Mar 2027 in another cabin: Premium economy · Business · First
Today's prices for 26 Nov in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Colombo to Kathmandu?
Return
Fares 90 to 179 days before departure were typically 13% lower than 7 to 13 days before departure.
From the cheapest return each day between 24 Sept and 11 Nov (47 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 7–13 days | $605 | $587 | +14% | 14 |
| 14–29 days | $646 | $441 | +22% | 12 |
| 30–59 days | $541 | $540 | +2% | 19 |
| 60–89 days | $674 | $566 | +27% | 13 |
| 90–179 days | $529 | $443 | Cheapest seen | 31 |
| 180+ days | $536 | $462 | +1% | 32 |
One-way
Not enough history yet: in 48 days of one-way prices, 24 Sept to 11 Nov, fewer than 3 booking ranges had prices on 7 days or more.
Live price for these dates
The cheapest return found recently is for 14 Feb 2027 – 14 Mar 2027. A live search on this page shows what those dates cost now, for one adult in economy.
Questions about this trip
How much is a return flight from Colombo to Kathmandu?
The cheapest return found recently is $496 with Air India, 14 Feb 2027 to 14 Mar 2027, found 2 days ago. The cheapest return we hold, of any age, is $441 with Air India, 26 Nov to 3 Dec, found 3 days ago. The cheapest return fare on each of 7 departure dates is usually $507 to $564.
How much is a one-way flight from Colombo to Kathmandu?
The cheapest one-way found recently is $307 with SriLankan Airlines, 26 Nov, found 3 days ago. The cheapest one-way we hold, of any age, is $263 with Air India, 16 Aug 2027, found 4 days ago.
What is the cheapest month to fly from Colombo to Kathmandu?
November 2026 is the cheapest month for a return, from $441, 26 Nov to 3 Dec, found 3 days ago. August 2027 is the cheapest month for a one-way, from $263, 16 Aug 2027, found 4 days ago.
How far ahead should I book a flight from Colombo to Kathmandu?
In 47 days of prices between 24 Sept and 11 Nov, return fares 90 to 179 days before departure were typically 13% lower than 7 to 13 days before departure.
Is there a direct flight from Colombo to Kathmandu?
Yes, the cheapest nonstop return found recently is $671 with SriLankan Airlines, 14 Feb 2027 to 14 Mar 2027, found 2 days ago.
Which airlines have the cheapest flights from Colombo to Kathmandu?
Between 26 Nov and 4 Oct 2027, Air India has the cheapest return on 6 of the 7 departure dates we hold, and IndiGo on 1.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work