Distance between Seattle, WA (SEA) and Chicago, IL (ORD)
Distance from Seattle–Tacoma International Airport to O'Hare International Airport is 1721 miles / 2769 kilometers / 1495 nautical miles.
Calculations with different 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).
Flight duration
Estimated flight time from Seattle–Tacoma International Airport (SEA) to 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.
Time Difference
Seattle
Chicago
Seattle, WA
PST
Chicago, IL
CST
Airport information
| A | 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 |
| B | 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 |
Map
Flight map from Seattle to Chicago.
Frequent Flyer Miles Calculator
Seattle (SEA) → Chicago (ORD).
Elite level bonus (%):
Booking class bonus (%):
Air miles:
1721
Elite level bonus:
0
Booking class bonus:
0
In total
Total frequent flyer miles:
1721
Round trip?