The sector is held by Korean Air.
Airport pair · hand carry reference
ICN Seoul to KTM Kathmandu
Incheon International, South Korea, to Tribhuvan International, Nepal. Computed from the scheduled network held on 2026-09-07.
- Nonstop
- 2 times a week
- Great circle
- 3,966 km
- Block, estimated
- 5h 17m
- Door to door
- 12h 02m
What ICN to KTM looks like
The ICN to KTM sector, the carriers on it and the flying time, before anything is promised to anybody.
Seoul ICN to Kathmandu KTM is a long haul sector of 3,966 km by great circle, flown nonstop 2 times a week.
At the cruise speed this site models for 3,966 km, 880 km an hour, and thirty minutes of taxi at the two ends, the flight blocks at about 5h 17m.
Seoul ICN is a major hub in the network held here, 165 scheduled destinations and 641.2 departures a day. Kathmandu KTM has 35 destinations and 100.6 departures a day.
Seoul carries about 6.4 times the departures of Kathmandu, so a courier who has to be rebooked has far more to work with at one end of this pair than at the other.
Kathmandu is 3.2 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 KTM from the scheduled route statistics, both directions, with the operating carriers named.
| Direction | Flights a day | Flights a week | Operated by |
|---|---|---|---|
| ICN to KTM | 0.29 | 2 | Korean Air |
| KTM to ICN | 0.29 | 2 | Korean Air |
One carrier holds the sector, Korean Air, 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 KTM, 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 5h 17m block time on ICN to KTM. 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 KTM in the air, estimated | 317 min | 9h 47m |
| Formalities at KTM | 90 min | 11h 17m |
| Delivery run in Kathmandu | 45 min | 12h 02m |
| Door to door | 722 min | 12h 02m |
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 KTM is 12h 02m.
A courier who leaves Seoul at 09:00 local is on the ground in Kathmandu at about 11:02 local and at the door by 13:17 the same day.
Working backwards from a six in the evening handover in Kathmandu, the last useful departure from Seoul is around 13:43 local.
At 12h 02m 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. 15 of them join ICN to KTM.
| Connecting at | ICN to hub, flights a day | Hub to KTM, flights a day | Track, km | Estimated, gate to gate |
|---|---|---|---|---|
| Chengdu TFU | 3.43 | 1.86 | 4,051 | 7h 26m |
| Kunming KMG | 1.29 | 0.57 | 4,385 | 7h 51m |
| Guangzhou CAN | 7.43 | 1.86 | 4,843 | 8h 26m |
| Hong Kong HKG | 23.86 | 1.29 | 5,002 | 8h 39m |
| Delhi DEL | 1.71 | 11.71 | 5,467 | 8h 53m |
| Bangkok BKK | 14 | 2.57 | 5,899 | 9h 31m |
15 airports connect the two ends on the scheduled network held here. The quickest of the dependable ones is Chengdu TFU, where the weaker of the two legs still runs about once a day.
Through TFU the routing covers 4,051 km against the 3,966 km nonstop track and takes about 7h 26m in the air and on the ground at the hub, allowing 75 minutes to connect at an airport of that size.
That is only 2h 09m more than the nonstop, which is close enough that a connection is worth taking when the nonstop is full or badly timed.
Behind it, Kunming KMG at 7h 51m and Guangzhou CAN at 8h 26m 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 KTM. 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 Kathmandu 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 KTM 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 KTM airport entry
- Hand carry into South Korea
- Hand carry into Nepal
- 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 KTM: Seoul to Taipei, Seoul to Singapore, Paris to Seoul, London to Seoul, Osaka to Seoul, Seoul to Atlanta, Seoul to Hong Kong, Nagoya to Seoul.