Distance between cities › USA › Missouri › Ballwin, MO › Distance from Ballwin to Affton Book Hotels

Distance from Ballwin, MO to Affton, MO

Distance

15 mi

Time

27 minutes

Gas Cost

$1 - $3

There are 11.91 miles from Ballwin to Affton in southeast direction and 15 miles (24.14 kilometers) by car, following the MO 30 route.

Ballwin and Affton are 27 minutes far apart, if you drive non-stop .

This is the fastest route from Ballwin, MO to Affton, MO. The halfway point is Kirkwood, MO.

Ballwin, MO and Affton, MO are in the same time zone (CDT). Current time in both locations is 8:36 pm.

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Lowest Price Rental Cars in Ballwin, MO

Planning on renting a car to go from Ballwin, MO to Affton, MO? Here there are some offers to rent a car in Ballwin, MO

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Ballwin »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 0.61 gallons of gas to cover the route between Ballwin, MO and Affton, MO.

The estimated cost of gas to go from Ballwin to Affton is $1.86.

During the route, an average car will release 12.02 pounds of CO₂ to the atmosphere. The carbon footprint would be 0.79 pounds of CO₂ per mile.

Average USA gas price used for calculation is $3.03 per gallon of regular gas. Price last updated on March 11, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Ballwin, MO and Affton, MO

If you want to meet halfway between Ballwin, MO and Affton, MO or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 38.569595 and -90.440666, or 38º 34' 10.542" N, 90º 26' 26.3976" W. This location is 7.64 miles away from Ballwin, MO and Affton, MO and it would take approximately 13 minutes to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Kirkwood, MO, situated 9 miles from Ballwin, MO and 6 miles from Affton, MO. It would take 15 minutes to go from Ballwin to Kirkwood and 10 minutes to go from Affton to Kirkwood.