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Distance from Webster, SD to IAD Airport

Distance

1,324 mi

Time

1 day 1 hour

Gas Cost

$123 - $240

Helpful Inaccurate

There are 1,114.51 miles from Webster to Washington Dulles International Airport (IAD) in southeast direction and 1,324 miles (2,130.77 kilometers) by car, following the I-94 route.

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

This is the fastest route from Webster, SD to IAD Airport. The halfway point is Schaumburg, IL.

Please note the time difference between Webster, SD and IAD Airport is 1 hour. The current time in Webster is 4:04 am and the current time in IAD Airport is 5:04 am.

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Lowest Price Rental Cars in Webster, SD

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

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Webster »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 53.19 gallons of gas to cover the route between Webster, SD and IAD Airport.

The estimated cost of gas to go from Webster to IAD Airport is $173.50.

During the route, an average car will release 1,042.09 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 $3.26 per gallon of regular gas. Price last updated on March 12, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Webster, SD and IAD Airport

If you want to meet halfway between Webster, 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 42.038971 and -88.035088, or 42º 2' 20.2956" N, 88º 2' 6.3168" W. This location is 662.21 miles away from Webster, SD and IAD Airport and it would take approximately 12 hours 38 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest city to the halfway point is Schaumburg, IL, situated 693 miles from Webster, SD and 721 miles from IAD Airport. It would take 10 hours to go from Webster to Schaumburg and 11 hours 25 mins to go from IAD to Schaumburg.

Major City Closest to Halfway Point

The major city closest to the halfway point between Webster, SD and IAD Airport is Chicago, IL, situated 720 miles from Webster, SD and 694 miles from IAD Airport. It would take 10 hours 32 mins to go from Webster to and 10 hours 54 mins to go from IAD to Chicago.