Air Miles Calculator logo

How far is Rockford, IL, from Thunder Bay?

The distance between Thunder Bay (Thunder Bay International Airport) and Rockford (Chicago Rockford International Airport) is 427 miles / 687 kilometers / 371 nautical miles.

The driving distance from Thunder Bay (YQT) to Rockford (RFD) is 592 miles / 953 kilometers, and travel time by car is about 11 hours 48 minutes.

Thunder Bay International Airport – Chicago Rockford International Airport

Distance arrow
427
Miles
Distance arrow
687
Kilometers
Distance arrow
371
Nautical miles

Search flights

Distance from Thunder Bay to Rockford

There are several ways to calculate the distance from Thunder Bay to Rockford. Here are two standard methods:

Vincenty's formula (applied above)
  • 426.676 miles
  • 686.669 kilometers
  • 370.772 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
  • 426.897 miles
  • 687.024 kilometers
  • 370.963 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 Thunder Bay to Rockford?

The estimated flight time from Thunder Bay International Airport to Chicago Rockford International Airport is 1 hour and 18 minutes.

Flight carbon footprint between Thunder Bay International Airport (YQT) and Chicago Rockford International Airport (RFD)

On average, flying from Thunder Bay to Rockford generates about 88 kg of CO2 per passenger, and 88 kilograms equals 194 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path and driving directions from Thunder Bay to Rockford

See the map of the shortest flight path between Thunder Bay International Airport (YQT) and Chicago Rockford International Airport (RFD).

Airport information

Origin Thunder Bay International Airport
City: Thunder Bay
Country: Canada Flag of Canada
IATA Code: YQT
ICAO Code: CYQT
Coordinates: 48°22′18″N, 89°19′26″W
Destination 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