Air Miles Calculator

Distance between Chicago, IL (ORD) and Seattle, WA (BFI)

Flight distance from Chicago to Seattle (Chicago O'Hare International Airport – Seattle Boeing Field) is 1720 miles / 2768 kilometers / 1495 nautical miles. Estimated flight time is 3 hours 45 minutes.

Driving distance from Chicago (ORD) to Seattle (BFI) is 2090 miles / 3364 kilometers and travel time by car is about 33 hours 57 minutes.

Map of flight path and driving directions from Chicago to Seattle.

Shortest flight path between Chicago O'Hare International Airport (ORD) and Seattle Boeing Field (BFI).

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)
  • 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).

Airport information


A Chicago O'Hare International Airport
City: Chicago, IL
Country: United States Flag of United States
IATA Code: ORD
ICAO Code: KORD
Coordinates: 41°58′42″N, 87°54′17″W

B Seattle Boeing Field
City: Seattle, WA
Country: United States Flag of United States
IATA Code: BFI
ICAO Code: KBFI
Coordinates: 47°31′47″N, 122°18′7″W

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

 CDT

Seattle, WA

 PDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 194 kg (428 pounds).

Frequent Flyer Miles Calculator

Chicago (ORD) → Seattle (BFI).

Distance:
1720
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
1720

Round trip?