How far is Chicago from Seattle?
There are several ways to calculate distances between Seattle 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).
Estimated flight time from Seattle–Tacoma International Airport (SEA) to Chicago O'Hare International Airport (ORD) is 3 hours 45 minutes.
Time difference and current local times
The time difference between Seattle and Chicago is 2 hours. Chicago is 2 hours ahead of Seattle.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 189 kg (416 pounds).
Seattle to Chicago flight path
Shortest flight path between Seattle–Tacoma International Airport (SEA) and Chicago O'Hare International Airport (ORD).
Frequent Flyer Miles Calculator
Seattle (SEA) → Chicago (ORD).