Nanjing to Seoul
1h 35mgate to gate
The flight from Nanjing Lukou International Airport (NKG) to Incheon International Airport (ICN) covers 942 km (585 miles) and takes approximately 1h 35m gate to gate for a typical jet.
The route heads north-east on an initial great-circle bearing of 45°, passing near 34.7° N, 122.5° E at its midpoint.
Bearing 45° north-east Midpoint 34.7° N, 122.5° E Model 805 km/h + 25 min
SOURCE·OurAirports + great-circle computation·REVIEWED JUL 2026
How this is worked out
- Take both airports' published coordinates from OurAirports — nothing here is scraped from another flight site.
- Great-circle distance by haversine on a mean earth radius of 6,371.0088 km: 942 km.
- Airborne time = that distance ÷ 805 km/h, a representative jet cruise speed: 1h 10m.
- Add a flat 25 minutes for pushback, taxi, climb, descent and taxi-in — the reason a 400 km hop is never half an hour: 1h 35m gate to gate.
- Winds, aircraft type and airline schedule padding are not modelled. The cruise-speed table shows how much that assumption is worth.
942 km / 805 km/h = 1h 10m airborne
+ 25 min ground = 1h 35m gate to gate
SOURCE·OurAirports + great-circle computation·REVIEWED JUL 2026
The same route, plotted on a world grid
The strip above gives the route its length and its shape. This gives it a position: latitude and longitude only, no coastlines, because a hand-drawn coastline would be decoration pretending to be data. On a flat grid the shortest path looks bent; on a globe it is straight.
Flight time at different cruise speeds
Aircraft type, winds and routing all move the real number. This is the same distance flown at different speeds, plus the 25-minute ground and climb allowance.
| Typical of | Cruise speed | Airborne | Gate to gate |
|---|---|---|---|
| Turboprop / regional | 550 km/h | 1h 43m | 2h 08m |
| Narrowbody jet (A320, 737) | 780 km/h | 1h 12m | 1h 38m |
| Widebody jet (777, 787, A350) | 900 km/h | 1h 03m | 1h 28m |
| Private jet (Gulfstream) | 850 km/h | 1h 06m | 1h 32m |
Headwinds on an eastbound long-haul routinely add 30–60 minutes; the same route westbound can be quicker. Airlines publish schedules with padding built in.
SOURCE·OurAirports + great-circle computation·REVIEWED JUL 2026
Both airports
| NKG | ICN | |
|---|---|---|
| Airport | Nanjing Lukou International Airport | Incheon International Airport |
| City | Nanjing | Seoul |
| Country | China | South Korea |
| ICAO | ZSNJ | RKSI |
| Coordinates | 31.735, 118.8659 | 37.4691, 126.451 |
| Elevation | 49 ft | 23 ft |
Every figure on this plate is geometry. The shape of the earth is knowable; the airline's schedule is not.
Questions this plate answers
How long is the flight from Nanjing to Seoul?
A non-stop flight from Nanjing (NKG) to Seoul (ICN) takes about 1h 35m. The great-circle distance is 942 km (585 miles, 509 nautical miles), flying north-east on an initial bearing of 45°.
How far is Nanjing from Seoul?
942 kilometres in a straight line over the earth's surface — 585 miles or 509 nautical miles. Actual flown distance is usually 2–5% longer because aircraft follow airways, avoid weather and route around restricted airspace.
Is there a non-stop flight between NKG and ICN?
This page calculates the direct-line time and distance; it does not track airline schedules. At 942 km the route is comfortably within range of a non-stop service if an airline chooses to fly it. Check an airline or booking site for what is actually scheduled.
Airport coordinates from OurAirports (public domain). Distance is a great-circle calculation; flight time uses the model described on the method page. Flight times are great-circle estimates for planning only — always check the airline's published schedule.
