Seoul to Washington
14h 20m The flight from Incheon International Airport (ICN) to Ronald Reagan Washington National Airport (DCA) covers 11,195 km (6,956 miles) and takes approximately 14h 20m gate to gate for a typical jet.
The route heads north on an initial great-circle bearing of 18°, passing near 75.5° N, 157.9° 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 21m | 20h 46m |
| Narrowbody jet (A320, 737) | 780 km/h | 14h 21m | 14h 46m |
| Widebody jet (777, 787, A350) | 900 km/h | 12h 26m | 12h 52m |
| Private jet (Gulfstream) | 850 km/h | 13h 10m | 13h 35m |
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 | DCA | |
|---|---|---|
| Airport | Incheon International Airport | Ronald Reagan Washington National Airport |
| City | Seoul | Washington |
| Country | South Korea | United States |
| ICAO | RKSI | KDCA |
| Coordinates | 37.4691, 126.451 | 38.8521, -77.0377 |
| Elevation | 23 ft | 15 ft |
Questions
How long is the flight from Seoul to Washington?
A non-stop flight from Seoul (ICN) to Washington (DCA) takes about 14h 20m. The great-circle distance is 11,195 km (6,956 miles, 6,045 nautical miles), flying north on an initial bearing of 18°.
How far is Seoul from Washington?
11,195 kilometres in a straight line over the earth's surface — 6,956 miles or 6,045 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 DCA?
This page calculates the direct-line time and distance; it does not track airline schedules. At 11,195 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 20m 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.