|Distance||427 miles (689 km)|
|Average flight duration||3 h 31 min|
|Average plane ticket price||$364 (€316)|
Flights from Washington, DC to Knoxville, TN cover the 427 miles (689 km) long journey and usually take around 3 h 31 min. There are direct flight services available. While the average ticket price for this route costs around $364 (€316), you can find the cheapest plane ticket for as low as $364 (€316).
Here are some other resources that might have the information you need