Map of flight path and driving directions from Sioux City to Grand Forks.
Shortest flight path between Sioux Gateway Airport (SUX) and Grand Forks International Airport (GFK).
How far is Grand Forks from Sioux City?
There are several ways to calculate distances between Sioux City and Grand Forks. Here are two common methods:Vincenty's formula (applied above)
- 384.975 miles
- 619.557 kilometers
- 334.534 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
- 385.169 miles
- 619.870 kilometers
- 334.703 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).
Time difference and current local times
There is no time difference between Sioux City and Grand Forks.
Sioux City, IA
Grand Forks, ND
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 82 kg (180 pounds).
Frequent Flyer Miles Calculator
Sioux City (SUX) → Grand Forks (GFK).