Calculations with different methods
- 1733.255 miles
- 2789.403 kilometers
- 1506.157 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
- 1728.763 miles
- 2782.174 kilometers
- 1502.254 nautical miles
The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance).
Estimated flight time from Midway International Airport (MDW) to Seattle–Tacoma International Airport (SEA) is 3 hours 46 minutes.
Time difference and current local times
The time difference between Chicago and Seattle is 2 hours. Seattle is 2 hours behind Chicago.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 204 kg (449 pounds).
Chicago to Seattle flight map.
Frequent Flyer Miles Calculator
Chicago (MDW) → Seattle (SEA).