# Distance between Houston, TX (IAH) and Quincy, IL (UIN)

Flight distance from Houston to Quincy (Houston George Bush Intercontinental Airport – Quincy Regional Airport) is 725 miles / 1168 kilometers / 630 nautical miles. Estimated flight time is 1 hour 52 minutes.

Driving distance from Houston (IAH) to Quincy (UIN) is 902 miles / 1451 kilometers and travel time by car is about 16 hours 31 minutes.

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

Shortest flight path between Houston George Bush Intercontinental Airport (IAH) and Quincy Regional Airport (UIN).

## How far is Quincy from Houston?

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

Vincenty's formula (applied above)
• 725.452 miles
• 1167.502 kilometers
• 630.401 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
• 726.773 miles
• 1169.628 kilometers
• 631.549 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 Houston George Bush Intercontinental Airport
City: Houston, TX
Country: United States
IATA Code: IAH
ICAO Code: KIAH
Coordinates: 29°59′3″N, 95°20′29″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 Houston and Quincy.

CST

CST

## Carbon dioxide emissions

Estimated CO2 emissions per passenger is 127 kg (281 pounds).

## Frequent Flyer Miles Calculator

Houston (IAH) → Quincy (UIN).

Distance:
725
Elite level bonus:
0
Booking class bonus:
0

### In total

Total frequent flyer miles:
725

Round trip?