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

Flight distance from Seattle to Rockford (Seattle–Tacoma International Airport – Chicago Rockford International Airport) is 1659 miles / 2669 kilometers / 1441 nautical miles. Estimated flight time is 3 hours 38 minutes.

Driving distance from Seattle (SEA) to Rockford (RFD) is 2037 miles / 3278 kilometers and travel time by car is about 35 hours 8 minutes.

1659
Miles
2669
Kilometers
1441
Nautical miles
3 h 38 min
190 kg

## How far is Rockford from Seattle?

There are several ways to calculate distances between Los Angeles and Chicago. 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 to Chicago Rockford International Airport is 3 hours 38 minutes.

## Time difference

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

## Carbon dioxide emissions

On average flying from Seattle to Rockford generates about 190 kg of CO2 per passenger, 190 kilograms is equal to 418 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

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

Shortest flight path between Seattle–Tacoma International Airport (SEA) and Chicago Rockford International Airport (RFD).

## Airport information

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