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Distance from Addison, AL to IAD Airport

Distance

729 mi

Time

14 hours 1 min

Gas Cost

$68 - $132

Helpful Inaccurate

There are 631.04 miles from Addison to Washington Dulles International Airport (IAD) in northeast direction and 729 miles (1,173.21 kilometers) by car, following the I-81 route.

Addison and IAD Airport are 14 hours 1 min far apart, if you drive non-stop .

This is the fastest route from Addison, AL to IAD Airport. The halfway point is Blountville, TN.

Please note the time difference between Addison, AL and IAD Airport is 1 hour. The current time in Addison is 12:04 pm and the current time in IAD Airport is 1:04 pm.

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Lowest Price Rental Cars in Addison, AL

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

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Addison »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 29.29 gallons of gas to cover the route between Addison, AL and IAD Airport.

The estimated cost of gas to go from Addison to IAD Airport is $95.55.

During the route, an average car will release 573.87 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 Addison, AL and IAD Airport

If you want to meet halfway between Addison, AL 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 36.540173 and -82.373085, or 36º 32' 24.6228" N, 82º 22' 23.106" W. This location is 364.68 miles away from Addison, AL and IAD Airport and it would take approximately 7 hours to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Blountville, TN, situated 386 miles from Addison, AL and 375 miles from IAD Airport. It would take 6 hours 10 mins to go from Addison to Blountville and 5 hours 48 mins to go from IAD to Blountville.