# How far is Rockford, IL, from Seattle, WA?

The distance between Seattle (Seattle–Tacoma International Airport) and Rockford (Chicago Rockford International Airport) is 1659 miles / 2669 kilometers / 1441 nautical miles.

The driving distance from Seattle (SEA) to Rockford (RFD) is 1983 miles / 3191 kilometers, and travel time by car is about 35 hours 2 minutes.

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

## Distance from Seattle to Rockford

There are several ways to calculate the distance from Seattle to Rockford. Here are two standard 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 planet.

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).

## How long does it take to fly from Seattle to Rockford?

The estimated flight time from Seattle–Tacoma International Airport to Chicago Rockford International Airport is 3 hours and 38 minutes.

## Flight carbon footprint between Seattle–Tacoma International Airport (SEA) and Chicago Rockford International Airport (RFD)

On average, flying from Seattle to Rockford generates about 190 kg of CO2 per passenger, and 190 kilograms equals 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

See the map of the 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