Air Miles Calculator

Distance between Seattle, WA (BFI) and Rockford, IL (RFD)

Distance from Seattle to Rockford (Boeing Field – Chicago Rockford International Airport) is 1658 miles / 2669 kilometers / 1441 nautical miles.

How far is Rockford from Seattle?

There are several ways to calculate distances between Seattle and Rockford. Here are two common methods:

Vincenty's formula (applied above)
  • 1658.241 miles
  • 2668.680 kilometers
  • 1440.972 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
  • 1653.907 miles
  • 2661.706 kilometers
  • 1437.206 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 Boeing Field (BFI) to Chicago Rockford International Airport (RFD) is 3 hours 38 minutes.

Time difference and current local times

The time difference between Seattle and Rockford is 2 hours. Rockford is 2 hours ahead of Seattle.

Time Difference

Seattle
Rockford

Seattle, WA

 PDT

Rockford, IL

 CDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 182 kg (401 pounds).

Airport information


A 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

B Chicago Rockford International Airport
City: Rockford, IL
Country: United States Flag of United States
IATA Code: RFD
ICAO Code: KRFD
Coordinates: 42°11′43″N, 89°5′49″W

Seattle to Rockford flight path

Shortest flight path between Boeing Field (BFI) and Chicago Rockford International Airport (RFD).

Frequent Flyer Miles Calculator

Seattle (BFI) → Rockford (RFD).

Elite level bonus (%):
Booking class bonus (%):
Air miles:
1658
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
1658

Round trip?