Air Miles Calculator

Distance between Chicago, IL (ORD) and Duluth, MN (DLH)

Distance from Chicago to Duluth (Duluth International Airport – O'Hare International Airport) is 397 miles / 639 kilometers / 345 nautical miles.

Calculations with different methods

Vincenty's formula (applied above)
  • 397.127 miles
  • 639.113 kilometers
  • 345.094 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
  • 397.006 miles
  • 638.920 kilometers
  • 344.989 nautical miles

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

Flight duration

Estimated flight time from O'Hare International Airport (ORD) to Duluth International Airport (DLH) is 1 hour 15 minutes.

Time difference and current local times

There is no time difference between Chicago and Duluth.

Time Difference

Chicago
Duluth

Chicago, IL

 CDT

Duluth, MN

 CDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 80 kg (176 pounds).

Airport information


A O'Hare International Airport
City: Chicago, IL
Country: United States Flag of United States
IATA Code: ORD
ICAO Code: KORD
Coordinates: 41°58′42″N, 87°54′17″W

B Duluth International Airport
City: Duluth, MN
Country: United States Flag of United States
IATA Code: DLH
ICAO Code: KDLH
Coordinates: 46°50′31″N, 92°11′36″W

Map

Chicago to Duluth flight map.

Frequent Flyer Miles Calculator

Chicago (ORD) → Duluth (DLH).

Elite level bonus (%):
Booking class bonus (%):
Air miles:
397
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
397

Round trip?