"See actual flight paths with flightpaths.com"
Weather, politics and local regulations can affect the choice of airspace and flight corridors. Flightpaths.com lets you see the real flight paths and compare passenger airlines and flight times simplified on an interactive map.
Flights from Dallas (DFW), USA to Denver (DEN), USA illustrated on a map. Based on 12 recorded flights, the distance can vary between 664 and 721 miles.
You can also check the reverse route: Denver to Dallas