Distance between Chicago, IL (ORD) and Seattle, WA (SEA)
Flight distance from Chicago to Seattle (Chicago O'Hare International Airport – Seattle–Tacoma International Airport) is 1721 miles / 2769 kilometers / 1495 nautical miles. Estimated flight time is 3 hours 45 minutes.
Driving distance from Chicago (ORD) to Seattle (SEA) is 2093 miles / 3368 kilometers and travel time by car is about 36 hours 10 minutes.
Chicago – Seattle
How far is Seattle from Chicago?
There are several ways to calculate distances between Los Angeles and Chicago. Here are two common methods:
Vincenty's formula (applied above)- 1720.561 miles
- 2768.975 kilometers
- 1495.127 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- 1716.075 miles
- 2761.755 kilometers
- 1491.229 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 Chicago O'Hare International Airport to Seattle–Tacoma International Airport is 3 hours 45 minutes.
Time difference
The time difference between Chicago and Seattle is 2 hours. Seattle is 2 hours behind Chicago.
Chicago time to Seattle time converter
Carbon dioxide emissions
On average flying from Chicago to Seattle generates about 194 kg of CO2 per passenger, 194 kilograms is equal to 428 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 Seattle
Shortest flight path between Chicago O'Hare International Airport (ORD) and Seattle–Tacoma International Airport (SEA).
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 | Seattle–Tacoma International Airport |
|---|---|
| City: | Seattle, WA |
| Country: | United States |
| IATA Code: | SEA |
| ICAO Code: | KSEA |
| Coordinates: | 47°26′56″N, 122°18′32″W |
Airlines flying from Chicago (ORD) to Seattle (SEA)
| Alaska Airlines |
| American Airlines |
| United Airlines |