There are 412.20 miles from Merrimack to Washington Dulles International Airport (IAD) in southwest direction and 484 miles (778.92 kilometers) by car, following the I-95 and NJTP S route.
Merrimack and IAD Airport are 8 hours 22 mins far apart, if you drive non-stop .
This is the fastest route from Merrimack, NH to IAD Airport. The halfway point is EWR, NJ.
Merrimack, NH and IAD Airport are in the same time zone (EDT). Current time in both locations is 4:08 am.
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