Calculations with different methods
- 1739.259 miles
- 2799.066 kilometers
- 1511.375 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
- 1734.657 miles
- 2791.659 kilometers
- 1507.376 nautical miles
The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance).
Estimated flight time from O'Hare International Airport (ORD) to Portland International Airport (PDX) is 3 hours 47 minutes.
Time difference and current local times
The time difference between Chicago and Portland is 2 hours. Portland is 2 hours behind Chicago.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 204 kg (450 pounds).
Chicago to Portland flight map.
Frequent Flyer Miles Calculator
Chicago (ORD) → Portland (PDX).