The sector is held by SriLankan Airlines.
Airport pair · hand carry reference
ICN Seoul to CMB Colombo
Incheon International, South Korea, to Bandaranaike International, Sri Lanka. Computed from the scheduled network held on 2026-09-07.
- Nonstop
- 2 times a week
- Great circle
- 5,768 km
- Block, estimated
- 7h 27m
- Door to door
- 14h 12m
What ICN to CMB looks like
The ICN to CMB sector, the carriers on it and the flying time, before anything is promised to anybody.
Seoul ICN to Colombo CMB is a long haul sector of 5,768 km by great circle, flown nonstop 2 times a week.
At the cruise speed this site models for 5,768 km, 880 km an hour, and thirty minutes of taxi at the two ends, the flight blocks at about 7h 27m.
Seoul ICN is a major hub in the network held here, 165 scheduled destinations and 641.2 departures a day. Colombo CMB has 45 destinations and 93.2 departures a day.
Seoul carries about 6.9 times the departures of Colombo, so a courier who has to be rebooked has far more to work with at one end of this pair than at the other.
Colombo is 3.5 hours behind of Seoul all year.
The pair sits inside Asia Pacific, a corridor where the site already publishes 16 written lanes that go into customs and ground detail this page does not.
Who flies the sector, and how often
Average daily frequencies on ICN to CMB from the scheduled route statistics, both directions, with the operating carriers named.
| Direction | Flights a day | Flights a week | Operated by |
|---|---|---|---|
| ICN to CMB | 0.29 | 2 | SriLankan Airlines |
| CMB to ICN | 0.29 | 2 | SriLankan Airlines |
One carrier holds the sector, SriLankan Airlines, so a cancellation has no second nonstop behind it and the connections below stop being theoretical.
At 2 times a week the nonstop is thin enough that a consignment which misses it waits days rather than hours, which is the case for reading the routings below before promising anything.
Between them the two directions put about 4.1 departures a week on ICN to CMB, which is the number that decides whether a seat can be found today or on Thursday.
The clock from collection to signature
The same ground timings the route calculator starts from, applied to the 7h 27m block time on ICN to CMB. Change any of them in the tool further down and the total moves with them.
| Stage | Allowed | Elapsed |
|---|---|---|
| Collection and the run to ICN | 90 min | 1h 30m |
| At ICN before departure | 180 min | 4h 30m |
| ICN to CMB in the air, estimated | 447 min | 11h 57m |
| Formalities at CMB | 90 min | 13h 27m |
| Delivery run in Colombo | 45 min | 14h 12m |
| Door to door | 852 min | 14h 12m |
On the desk standard ground timings, ninety minutes to collect and reach the airport, three hours at the airport before departure, ninety minutes of arrival formalities and a forty five minute delivery run, the door to door figure for ICN to CMB is 14h 12m.
A courier who leaves Seoul at 09:00 local is on the ground in Colombo at about 12:57 local and at the door by 15:12 the same day.
Working backwards from a six in the evening handover in Colombo, the last useful departure from Seoul is around 11:48 local.
At 14h 12m the mission uses most of a sixteen hour duty day, which leaves no room for a delay before a rest at the far end becomes the honest answer.
When the nonstop does not work
Every airport that joins the two ends, ranked by when they land, among the ones whose weaker leg is dependable enough to plan on. Connection time is allowed for the size of the hub. 22 of them join ICN to CMB.
| Connecting at | ICN to hub, flights a day | Hub to CMB, flights a day | Track, km | Estimated, gate to gate |
|---|---|---|---|---|
| Kunming KMG | 1.29 | 0.57 | 5,769 | 9h 23m |
| Chengdu TFU | 3.43 | 0.57 | 5,804 | 9h 24m |
| Guangzhou CAN | 7.43 | 0.71 | 6,001 | 9h 38m |
| Shanghai PVG | 22.43 | 1.14 | 5,921 | 9h 42m |
| Bangkok BKK | 14 | 3.43 | 6,061 | 9h 43m |
| Hong Kong HKG | 23.86 | 1.14 | 6,082 | 9h 44m |
22 airports connect the two ends on the scheduled network held here. The quickest of the dependable ones is Kunming KMG, where the weaker of the two legs still runs 4 times a week.
Through KMG the routing covers 5,769 km against the 5,768 km nonstop track and takes about 9h 23m in the air and on the ground at the hub, allowing 75 minutes to connect at an airport of that size.
That is only 1h 56m more than the nonstop, which is close enough that a connection is worth taking when the nonstop is full or badly timed.
Behind it, Chengdu TFU at 9h 24m and Guangzhou CAN at 9h 38m hold the same connection, so a booking has three hubs to try before it has to wait for the nonstop.
Restricted hours at either end
Widely documented operating restrictions, checked 2026-09-07. Exemptions and seasonal variations exist, so confirm with the carrier before relying on any of them.
Seoul ICN, night operations: Operates around the clock.
Industry within reach of the two ends
Public manufacturing and research sites whose logistics run through ICN or CMB. Listed as industrial geography, not as customers of anyone.
- Hyundai and Kia, Ulsan and HwaseongThe largest car plant complex in the world by capacity at Ulsan. Korean lines with European and American tooling. Logistics through Seoul ICN.
- Samsung, Hwaseong and GiheungMemory and logic fabrication. An hour south of Incheon, and the destination for a great deal of European equipment. Logistics through Seoul ICN.
Plan Seoul to Colombo yourself
The same tool the dispatchers use, open to anybody and free. It is loaded with this pair already. Change either end, add a stopover or a preferred airline, and it works out the connection, the transit and the door to door clock, with the real departures underneath. Put it on your own site if it is useful to you.
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Restrictions
Where this came from, and where to look next
- Carriers and frequencies: AeroDataBox scheduled route statistics, retrieved 2026-09-07. Average daily flights, not a timetable.
- Distances: great circle from published coordinates. They read short against a flown track, which is why the block time above applies a factor to them.
- Block and connection times: the same model the route calculator lower down this page runs, at the same rounding.
- Restrictions: the airport notes file, checked 2026-09-07.
- Industrial sites: public company information. Nothing here says or implies that any company named is a customer of any courier operator.
Who publishes this. OnBoard Courier is a placement desk in Dubai. An assignment is carried out by a vetted partner operator, with the desk as the single point of contact from the quote to the signature. This page exists because our own dispatchers need the answer for ICN to CMB in the twenty minutes before a promise is made, and a reference only one operator can read is not a reference. Free to read, quote and cite. Found an error? Tell us and we will correct it.
If you need something moved rather than looked up, the desk prices a hand carry in fifteen minutes.
- The ICN airport entry
- The CMB airport entry
- Hand carry into South Korea
- Hand carry into Sri Lanka
- The written lane, Abu Dhabi to Seoul
- The written lane, Amsterdam to Seoul
- The written lane, Doha to Seoul
- The route calculator
More pairs through ICN and CMB: Singapore to Colombo, Colombo to Doha, Kuala Lumpur to Colombo, Frankfurt to Colombo, Colombo to Delhi, Colombo to Kuwait City, Colombo to Chennai, Bangkok to Colombo.