There are 154.85 miles from Allentown to Washington Dulles International Airport (IAD) in southwest direction and 208 miles (334.74 kilometers) by car, following the I-95 S and US-202 S route.
Allentown and IAD Airport are 3 hours 34 mins far apart, if you drive non-stop .
This is the fastest route from Allentown, PA to IAD Airport. The halfway point is Shiremanstown, PA.
Allentown, PA and IAD Airport are in the same time zone (EDT). Current time in both locations is 6:08 pm.
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