Distance between cities › USA › Illinois › Walnut, IL › Distance from Walnut to Ronald Reagan Washington National Airport Book Hotels

Distance from Walnut, IL to DCA Airport

Distance

804 mi

Time

15 hours 21 mins

Gas Cost

$75 - $146

Helpful Inaccurate

There are 687.58 miles from Walnut to Ronald Reagan Washington National Airport (DCA) in southeast direction and 804 miles (1,293.91 kilometers) by car, following the I-76 and PATP route.

Walnut and DCA Airport are 15 hours 21 mins far apart, if you drive non-stop .

This is the fastest route from Walnut, IL to DCA Airport. The halfway point is Castalia, OH.

Please note the time difference between Walnut, IL and DCA Airport is 1 hour. The current time in Walnut is 2:35 pm and the current time in DCA Airport is 3:35 pm.

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Lowest Price Rental Cars in Walnut, IL

Planning on renting a car to go from Walnut, IL to DCA Airport? Here there are some offers to rent a car in Walnut, IL

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Walnut »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 32.31 gallons of gas to cover the route between Walnut, IL and DCA Airport.

The estimated cost of gas to go from Walnut to DCA Airport is $105.38.

During the route, an average car will release 632.95 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 Walnut, IL and DCA Airport

If you want to meet halfway between Walnut, IL and DCA Airport or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 41.351887 and -82.855568, or 41º 21' 6.7932" N, 82º 51' 20.0448" W. This location is 402.22 miles away from Walnut, IL and DCA Airport and it would take approximately 7 hours 40 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Castalia, OH, situated 397 miles from Walnut, IL and 428 miles from DCA Airport. It would take 6 hours 32 mins to go from Walnut to Castalia and 6 hours 41 mins to go from DCA to Castalia.