How far is Chicago, IL, from Portland, ME?
The distance between Portland (Portland International Jetport) and Chicago (Chicago O'Hare International Airport) is 900 miles / 1448 kilometers / 782 nautical miles.
The driving distance from Portland (PWM) to Chicago (ORD) is 1105 miles / 1778 kilometers, and travel time by car is about 20 hours 57 minutes.
Portland International Jetport – Chicago O'Hare International Airport
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Distance from Portland to Chicago
There are several ways to calculate the distance from Portland to Chicago. Here are two standard 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 planet.
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).
How long does it take to fly from Portland to Chicago?
The estimated flight time from Portland International Jetport to Chicago O'Hare International Airport is 2 hours and 12 minutes.
What is the time difference between Portland and Chicago?
The time difference between Portland and Chicago is 1 hour. Chicago is 1 hour behind Portland.
Flight carbon footprint between Portland International Jetport (PWM) and Chicago O'Hare International Airport (ORD)
On average, flying from Portland to Chicago generates about 144 kg of CO2 per passenger, and 144 kilograms equals 316 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Portland to Chicago
See the map of the shortest flight path between Portland International Jetport (PWM) and Chicago O'Hare International Airport (ORD).
Airport information
| Origin | Portland International Jetport |
|---|---|
| City: | Portland, ME |
| Country: | United States  |
| IATA Code: | PWM |
| ICAO Code: | KPWM |
| Coordinates: | 43°38′46″N, 70°18′33″W |
| Destination | Chicago O'Hare International Airport |
|---|---|
| City: | Chicago, IL |
| Country: | United States |
| IATA Code: | ORD |
| ICAO Code: | KORD |
| Coordinates: | 41°58′42″N, 87°54′17″W |