At the moment, there are zero airlines flying to Clarksburg. Go through the results to find the right flights for you – you can adjust the filters to see find even more flights to Clarksburg.
If you want to broaden your search, look at flights departing from other airports.
The distance between London Heathrow to Clarksburg is 6062 km. You can see the various flight times in the results.
You can also search by month, which will reveal the cheapest time of the week to fly.