Air Miles Calculator

Distance between Chicago, IL (ORD) and Portland, ME (PWM)

Distance from Chicago to Portland (O'Hare International Airport – Portland International Jetport) is 900 miles / 1448 kilometers / 782 nautical miles.

How far is Portland from Chicago?

There are several ways to calculate distances between Chicago and Portland. Here are two common methods:

Vincenty's formula (applied above)
  • 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 – the shortest distance between two points).

Flight duration

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.

Time Difference

Chicago
Portland

Chicago, IL

 CDT

Portland, ME

 EDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 144 kg (316 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 Portland International Jetport
City: Portland, ME
Country: United States Flag of United States
IATA Code: PWM
ICAO Code: KPWM
Coordinates: 43°38′46″N, 70°18′33″W

Chicago to Portland flight path

Shortest flight path between O'Hare International Airport (ORD) and Portland International Jetport (PWM).

Frequent Flyer Miles Calculator

Chicago (ORD) → Portland (PWM).

Elite level bonus (%):
Booking class bonus (%):
Air miles:
900
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
900

Round trip?