There are 427.02 miles from Knoxville to Ronald Reagan Washington National Airport (DCA) in northeast direction and 489 miles (786.97 kilometers) by car, following the I-81 N route.
Knoxville and DCA Airport are 7 hours 25 mins far apart, if you drive non-stop .
This is the fastest route from Knoxville, TN to DCA Airport. The halfway point is Lafayette, VA.
Knoxville, TN and DCA Airport are in the same time zone (EDT). Current time in both locations is 7:41 pm.
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