Air Miles Calculator

Distance between Seoul (GMP) and Iwakuni (IWK)

Flight distance from Seoul to Iwakuni (Seoul Gimpo International Airport – Marine Corps Air Station Iwakuni) is 386 miles / 621 kilometers / 335 nautical miles. Estimated flight time is 1 hour 13 minutes.

Driving distance from Seoul (GMP) to Iwakuni (IWK) is 536 miles / 863 kilometers and travel time by car is about 47 hours 31 minutes.

Map of flight path and driving directions from Seoul to Iwakuni.

Shortest flight path between Seoul Gimpo International Airport (GMP) and Marine Corps Air Station Iwakuni (IWK).

How far is Iwakuni from Seoul?

There are several ways to calculate distances between Seoul and Iwakuni. Here are two common methods:

Vincenty's formula (applied above)
  • 385.655 miles
  • 620.651 kilometers
  • 335.125 nautical miles

Vincenty's formula calculates the distance between latitude/longitude points on the earth’s surface, using an ellipsoidal model of the earth.

Haversine formula
  • 385.417 miles
  • 620.268 kilometers
  • 334.918 nautical miles

The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance – the shortest distance between two points).

Airport information


A Seoul Gimpo International Airport
City: Seoul
Country: South Korea Flag of South Korea
IATA Code: GMP
ICAO Code: RKSS
Coordinates: 37°33′29″N, 126°47′27″E

B Marine Corps Air Station Iwakuni
City: Iwakuni
Country: Japan Flag of Japan
IATA Code: IWK
ICAO Code: RJOI
Coordinates: 34°8′38″N, 132°14′9″E

Time difference and current local times

There is no time difference between Seoul and Iwakuni.

Time Difference

Seoul

 KST

Iwakuni

 JST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 82 kg (180 pounds).

Frequent Flyer Miles Calculator

Seoul (GMP) → Iwakuni (IWK).

Distance:
386
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
386

Round trip?