Distance between cities › USA › Mississippi › Hattiesburg, MS › Distance from Hattiesburg to Washington Dulles International Airport Book Hotels

Distance from Hattiesburg, MS to IAD Airport

Distance

962 mi

Time

14 hours 51 mins

Gas Cost

$123 - $239

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Helpful Inaccurate

There are 850.01 miles from Hattiesburg to Washington Dulles International Airport (IAD) in northeast direction and 962 miles (1,547.82 kilometers) by car, following the I-81 route.

Hattiesburg and IAD Airport are 14 hours 51 mins far apart, if you drive non-stop.

This is the fastest route from Hattiesburg, MS to IAD Airport. The halfway point is Knoxville, TN.

Please note the time difference between Hattiesburg, MS and IAD Airport is 1 hour. The current time in Hattiesburg is 10:07 am and the current time in IAD Airport is 11:07 am.

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Lowest Price Rental Cars in Hattiesburg, MS

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

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Hattiesburg »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 38.63 gallons of gas to cover the route between Hattiesburg, MS and IAD Airport.

Not sure of your MPG? Find your car

The estimated cost of gas to go from Hattiesburg to IAD Airport is $172.66.

During the route, an average car will release 756.75 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 $4.47 per gallon of regular gas. Price last updated on October 5, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Hattiesburg, MS and IAD Airport

If you want to meet halfway between Hattiesburg, MS 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 36.013599 and -83.852516, or 36º 0' 48.9564" N, 83º 51' 9.0576" W. This location is 480.89 miles away from Hattiesburg, MS and IAD Airport and it would take approximately 7 hours 25 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest and also the major city is Knoxville, TN, situated 491.15 miles from Hattiesburg, MS and 477.5 miles from IAD Airport. It would take 7 hours 28 mins to go from Hattiesburg to Knoxville and 7 hours 21 mins to go from IAD to Knoxville.