# Distance between Green Bay, WI (GRB) and Quincy, IL (UIN)

Flight distance from Green Bay to Quincy (Green Bay–Austin Straubel International Airport – Quincy Regional Airport) is 351 miles / 564 kilometers / 305 nautical miles. Estimated flight time is 1 hour 9 minutes.

Driving distance from Green Bay (GRB) to Quincy (UIN) is 450 miles / 725 kilometers and travel time by car is about 8 hours 15 minutes.

## Map of flight path and driving directions from Green Bay to Quincy.

Shortest flight path between Green Bay–Austin Straubel International Airport (GRB) and Quincy Regional Airport (UIN).

## How far is Quincy from Green Bay?

There are several ways to calculate distances between Green Bay and Quincy. Here are two common methods:

Vincenty's formula (applied above)
• 350.680 miles
• 564.365 kilometers
• 304.733 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
• 350.792 miles
• 564.546 kilometers
• 304.830 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 Green Bay–Austin Straubel International Airport
City: Green Bay, WI
Country: United States
IATA Code: GRB
ICAO Code: KGRB
Coordinates: 44°29′6″N, 88°7′46″W

B Quincy Regional Airport
City: Quincy, IL
Country: United States
IATA Code: UIN
ICAO Code: KUIN
Coordinates: 39°56′33″N, 91°11′40″W

## Time difference and current local times

There is no time difference between Green Bay and Quincy.

CST

CST

## Carbon dioxide emissions

Estimated CO2 emissions per passenger is 77 kg (169 pounds).

## Frequent Flyer Miles Calculator

Green Bay (GRB) → Quincy (UIN).

Distance:
351
Elite level bonus:
0
Booking class bonus:
0

### In total

Total frequent flyer miles:
351

Round trip?