How far is Portland, ME, from Chicago, IL?
The distance between Chicago (Chicago O'Hare International Airport) and Portland (Portland International Jetport) is 900 miles / 1448 kilometers / 782 nautical miles.
The driving distance from Chicago (ORD) to Portland (PWM) is 1108 miles / 1783 kilometers, and travel time by car is about 20 hours 56 minutes.
Chicago O'Hare International Airport – Portland International Jetport
Search flights
Distance from Chicago to Portland
There are several ways to calculate the distance from Chicago to Portland. 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 Chicago to Portland?
The estimated flight time from Chicago O'Hare International Airport to Portland International Jetport is 2 hours and 12 minutes.
What is the time difference between Chicago and Portland?
The time difference between Chicago and Portland is 1 hour. Portland is 1 hour ahead of Chicago.
Flight carbon footprint between Chicago O'Hare International Airport (ORD) and Portland International Jetport (PWM)
On average, flying from Chicago to Portland 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 Chicago to Portland
See the map of the shortest flight path between Chicago O'Hare International Airport (ORD) and Portland International Jetport (PWM).
Airport information
| Origin | 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 |
| Destination | Portland International Jetport |
|---|---|
| City: | Portland, ME |
| Country: | United States |
| IATA Code: | PWM |
| ICAO Code: | KPWM |
| Coordinates: | 43°38′46″N, 70°18′33″W |
Airlines flying from Chicago (ORD) to Portland (PWM)
| United Airlines |