# 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
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
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.

KST

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?