In-air flight time: 33 minutes
From gate to gate: 52 minutes
Constant 500 mph: 21 minutes

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Flight map from IAD to ROA

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Flying time from IAD to ROA

The total flight duration from IAD to ROA is 33 minutes.

This is the average in-air flight time (wheels up to wheels down on the runway) based on actual flights taken over the past year. It covers the entire time on a typical commercial flight including take-off and landing.

If you're planning a trip, you should also factor in extra time for the plane to pull back from the gate and taxi to the runway, as well as reaching the destination gate after landing. If you include this extra time on the tarmac, the average total elapsed time from gate to gate flying from IAD to ROA is 52 minutes.

Finally, pilots might want to estimate the flight time using an average flight speed for a commercial airliner of 500 mph, which is equivalent to 805 km/h or 434 knots. If you don't add any extra time to increase or decrease speed for take-off and landing, then at constant speed your flight time would be 21 minutes.

Note that if you fly the other direction, the flight time from ROA to IAD would be 38 minutes due to the effect of winds and the jet stream.

If you're booking a flight, make sure you check the scheduled departure and arrival times. You should also factor in airport wait times and possible equipment or weather delays. If you're trying to figure out what time you'll arrive at the destination, you may want to see if there's a time difference between IAD and ROA.

The calculation of flight time is based on the straight line distance from IAD to ROA ("as the crow flies"), which is about 178 miles or 286 kilometers.

Your trip begins at Washington Dulles International Airport in Dulles, Virginia.
It ends at Roanoke Regional Airport in Roanoke, Virginia.

Your flight direction from IAD to ROA is Southwest (-128 degrees from North).

The flight time calculator measures the average flight duration between points. It uses the great circle formula to compute the travel mileage.

Flight time calculator

Travelmath provides an online flight time calculator for all types of travel routes. You can enter airports, cities, states, countries, or zip codes to find the flying time between any two points. The database uses the great circle distance and the average airspeed of a commercial airliner to figure out how long a typical flight would take. Find your travel time to estimate the length of a flight between airports, or ask how long it takes to fly from one city to another.