Calculations with different methods
- 899.871 miles
- 1448.203 kilometers
- 781.967 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
- 897.529 miles
- 1444.432 kilometers
- 779.931 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 Jetport (PWM) is 2 hours 12 minutes.
Time difference and current local times
The time difference between Chicago and Portland is 1 hour. Portland is 1 hour ahead of Chicago.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 131 kg (289 pounds).
Chicago to Portland flight map.
Frequent Flyer Miles Calculator
Chicago (ORD) → Portland (PWM).