Seoul to Dulles
14h 18m The flight from Incheon International Airport (ICN) to Washington Dulles International Airport (IAD) covers 11,173 km (6,943 miles) and takes approximately 14h 18m gate to gate for a typical jet.
The route heads north on an initial great-circle bearing of 19°, passing near 75.2° N, 158.2° W at its midpoint.
The route
The great-circle path — the shortest line between the two airports across the curve of the earth. On a flat map it 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 | 20h 19m | 20h 44m |
| Narrowbody jet (A320, 737) | 780 km/h | 14h 19m | 14h 45m |
| Widebody jet (777, 787, A350) | 900 km/h | 12h 25m | 12h 50m |
| Private jet (Gulfstream) | 850 km/h | 13h 09m | 13h 34m |
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.
Both airports
| ICN | IAD | |
|---|---|---|
| Airport | Incheon International Airport | Washington Dulles International Airport |
| City | Seoul | Dulles |
| Country | South Korea | United States |
| ICAO | RKSI | KIAD |
| Coordinates | 37.4691, 126.451 | 38.9445, -77.4558 |
| Elevation | 23 ft | 312 ft |
Questions
How long is the flight from Seoul to Dulles?
A non-stop flight from Seoul (ICN) to Dulles (IAD) takes about 14h 18m. The great-circle distance is 11,173 km (6,943 miles, 6,033 nautical miles), flying north on an initial bearing of 19°.
How far is Seoul from Dulles?
11,173 kilometres in a straight line over the earth's surface — 6,943 miles or 6,033 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 ICN and IAD?
This page calculates the direct-line time and distance; it does not track airline schedules. At 11,173 km the route is within reach of long-range widebodies, though not every city pair is served non-stop. Check an airline or booking site for what is actually scheduled.
What should I expect on a 14h 18m flight?
Anything past six hours is a long-haul flight: expect at least one meal service, a significant time-zone shift, and enough sitting that circulation and hydration start to matter. Cabin altitude, dry air and disrupted sleep do more damage to a training routine than the flight itself.
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.