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Distance from Harrison, SD to IAD Airport

Distance

1,356 mi

Time

1 day 1 hour

Gas Cost

$124 - $241

Helpful Inaccurate

There are 1,134.89 miles from Harrison to Washington Dulles International Airport (IAD) in southeast direction and 1,356 miles (2,182.27 kilometers) by car, following the I-90 route.

Harrison and IAD Airport are 1 day 1 hour far apart, if you drive non-stop .

This is the fastest route from Harrison, SD to IAD Airport. The halfway point is Des Plaines, IL.

Please note the time difference between Harrison, SD and IAD Airport is 1 hour. The current time in Harrison is 11:31 pm (Mar 11) and the current time in IAD Airport is 12:31 am (Mar 12).

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Lowest Price Rental Cars in Harrison, SD

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

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Harrison »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 54.46 gallons of gas to cover the route between Harrison, SD and IAD Airport.

The estimated cost of gas to go from Harrison to IAD Airport is $174.49.

During the route, an average car will release 1,067.01 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 Harrison, SD and IAD Airport

If you want to meet halfway between Harrison, SD and IAD Airport or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 42.012184 and -87.916992, or 42º 0' 43.8624" N, 87º 55' 1.1712" W. This location is 678.04 miles away from Harrison, SD and IAD Airport and it would take approximately 12 hours 42 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest city to the halfway point is Des Plaines, IL, situated 666 miles from Harrison, SD and 711 miles from IAD Airport. It would take 9 hours 52 mins to go from Harrison to Des Plaines and 11 hours 14 mins to go from IAD to Des Plaines.

Major City Closest to Halfway Point

The major city closest to the halfway point between Harrison, SD and IAD Airport is Chicago, IL, situated 682 miles from Harrison, SD and 694 miles from IAD Airport. It would take 10 hours 7 mins to go from Harrison to and 10 hours 54 mins to go from IAD to Chicago.