Distance between Chicago, IL (MDW) and Seattle, WA (SEA)
Distance from Chicago to Seattle (Midway International Airport – Seattle–Tacoma International Airport) is 1733 miles / 2789 kilometers / 1506 nautical miles.
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Chicago - Seattle
How far is Seattle from Chicago?
There are several ways to calculate distances between Chicago and Seattle. Here are two common methods:
Vincenty's formula (applied above)- 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 – the shortest distance between two points).
Flight duration
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.
Time Difference
Chicago, IL
Seattle, WA
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 190 kg (420 pounds).
Airport information
| A | Midway International Airport |
|---|---|
| City: | Chicago, IL |
| Country: | United States  |
| IATA Code: | MDW |
| ICAO Code: | KMDW |
| Coordinates: | 41°47′9″N, 87°45′8″W |
| B | 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 |
Map
Chicago to Seattle flight map.
Frequent Flyer Miles Calculator
Chicago (MDW) → Seattle (SEA).
In total
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