Distance between cities › USA › South Dakota › Custer, SD › Distance from Custer to Baltimore–Washington International Airport Book Hotels

Distance from Custer, SD to BWI Airport

Distance

1,653 mi

Time

1 day 5 hours

Gas Cost

$151 - $294

Helpful Inaccurate

There are 1,423.04 miles from Custer to Baltimore–Washington International Airport (BWI) in southeast direction and 1,653 miles (2,660.25 kilometers) by car, following the I-90 and US-14 route.

Custer and BWI Airport are 1 day 5 hours far apart, if you drive non-stop .

This is the fastest route from Custer, SD to BWI Airport. The halfway point is Poynette, WI.

Please note the time difference between Custer, SD and BWI Airport is 2 hours. The current time in Custer is 7:07 pm and the current time in BWI Airport is 9:07 pm.

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Lowest Price Rental Cars in Custer, SD

Planning on renting a car to go from Custer, SD to BWI Airport? Here there are some offers to rent a car in Custer, SD

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Custer »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 66.39 gallons of gas to cover the route between Custer, SD and BWI Airport.

The estimated cost of gas to go from Custer to BWI Airport is $212.73.

During the route, an average car will release 1,300.80 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 $3.20 per gallon of regular gas. Price last updated on March 11, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Custer, SD and BWI Airport

If you want to meet halfway between Custer, SD and BWI Airport or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.407703 and -89.435387, or 43º 24' 27.7308" N, 89º 26' 7.3932" W. This location is 826.61 miles away from Custer, SD and BWI Airport and it would take approximately 14 hours 51 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Poynette, WI, situated 790 miles from Custer, SD and 869 miles from BWI Airport. It would take 11 hours 10 mins to go from Custer to Poynette and 13 hours 21 mins to go from BWI to Poynette.

Major City Closest to Halfway Point

The major city closest to the halfway point between Custer, SD and BWI Airport is Madison, WI, situated 812 miles from Custer, SD and 849 miles from BWI Airport. It would take 11 hours 33 mins to go from Custer to and 13 hours 4 mins to go from BWI to Madison.