Map of flight path and driving directions from Seattle to Chicago.
Shortest flight path between Seattle Boeing Field (BFI) and Chicago O'Hare International Airport (ORD).
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)
- 1720.232 miles
- 2768.445 kilometers
- 1494.841 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
- 1715.751 miles
- 2761.234 kilometers
- 1490.947 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).
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 194 kg (428 pounds).
Frequent Flyer Miles Calculator
Seattle (BFI) → Chicago (ORD).