Distance between cities › USA › Pennsylvania › Mountain Top, PA › Distance from Mountain Top to Washington Dulles International Airport Book Hotels

Distance from Mountain Top, PA to IAD Airport

Distance

214 mi

Time

4 hours 52 mins

Gas Cost

$22 - $42

Helpful Inaccurate

There are 174.42 miles from Mountain Top to Washington Dulles International Airport (IAD) in southwest direction and 214 miles (344.40 kilometers) by car, following the I-81 route.

Mountain Top and IAD Airport are 4 hours 52 mins far apart, if you drive non-stop .

This is the fastest route from Mountain Top, PA to IAD Airport. The halfway point is Lemoyne, PA.

Mountain Top, PA and IAD Airport are in the same time zone (EDT). Current time in both locations is 6:28 pm.

Any questions or tips to share?

Share with fellow travellers any question or tips about the route from Mountain Top, PA to IAD Airport:

Lowest Price Rental Cars in Mountain Top, PA

Planning on renting a car to go from Mountain Top, PA to IAD Airport? Here there are some offers to rent a car in Mountain Top, PA

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Mountain Top »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 8.60 gallons of gas to cover the route between Mountain Top, PA and IAD Airport.

The estimated cost of gas to go from Mountain Top to IAD Airport is $30.29.

During the route, an average car will release 168.41 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 $3.52 per gallon of regular gas. Price last updated on March 18, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Mountain Top, PA and IAD Airport

If you want to meet halfway between Mountain Top, PA 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 40.239033 and -76.898254, or 40º 14' 20.5188" N, 76º 53' 53.7144" W. This location is 107.02 miles away from Mountain Top, PA and IAD Airport and it would take approximately 2 hours 26 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Lemoyne, PA, situated 103 miles from Mountain Top, PA and 112 miles from IAD Airport. It would take 1 hour 46 mins to go from Mountain Top to Lemoyne and 2 hours 17 mins to go from IAD to Lemoyne.