Air Miles Calculator

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

Flight distance from Seattle to Rockford (Seattle Boeing Field – Chicago Rockford International Airport) is 1658 miles / 2669 kilometers / 1441 nautical miles. Estimated flight time is 3 hours 38 minutes.

Driving distance from Seattle (BFI) to Rockford (RFD) is 2035 miles / 3275 kilometers and travel time by car is about 32 hours 59 minutes.

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

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

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).

Airport information


A 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

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

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, WA

 PST

Rockford, IL

 CST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 190 kg (418 pounds).

Frequent Flyer Miles Calculator

Seattle (BFI) → Rockford (RFD).

Distance:
1658
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
1658

Round trip?