Air Miles Calculator

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

Distance from Seattle to Rockford (Seattle–Tacoma International Airport – Chicago Rockford International Airport) is 1659 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)
  • 1658.530 miles
  • 2669.145 kilometers
  • 1441.223 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
  • 1654.192 miles
  • 2662.163 kilometers
  • 1437.453 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 Seattle–Tacoma International Airport (SEA) 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 Seattle–Tacoma International Airport
City: Seattle, WA
Country: United States Flag of United States
IATA Code: SEA
ICAO Code: KSEA
Coordinates: 47°26′56″N, 122°18′32″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 Seattle–Tacoma International Airport (SEA) and Chicago Rockford International Airport (RFD).

Frequent Flyer Miles Calculator

Seattle (SEA) → Rockford (RFD).

Elite level bonus (%):
Booking class bonus (%):
Air miles:
1659
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
1659

Round trip?