Direct (nonstop) flights from Dulles to Knoxville
2 airlines fly nonstop from Washington Dulles International (IAD) to Mc Ghee Tyson (TYS). It's 420 miles (676 km), about 1h 34m in the air. Operated by Allegiant Air, United Airlines.
Allegiant Air
United Airlines
Route data last updated: May 31, 2026
Airlines with non-stop flights
UA
United Airlines
Alternative Routes
Other ways to fly from Dulles to Knoxville with one stop · direct emits 78 kg CO₂ per passenger
Looking for the return flight?
TYS → IAD: Flights from Knoxville to DullesOther direct flights from Dulles
Direct flights from Knoxville (TYS)
Frequently Asked Questions
How long is the direct flight from Dulles to Knoxville?
A nonstop flight from Dulles (IAD) to Knoxville (TYS) takes approximately 1 hours and 34 minutes. The distance is 420 miles (676 km).
Which airlines fly nonstop from Dulles to Knoxville?
2 airlines: Allegiant Air, United Airlines.
Is there a nonstop flight from Dulles to Knoxville?
Yes. 2 airlines: Allegiant Air, United Airlines.
How far is Dulles from Knoxville?
The flight distance from Dulles to Knoxville is 420 miles (676 km), measured as the great-circle (shortest air) distance. That's roughly the same distance as Mumbai to Goa.
What type of aircraft flies from Dulles to Knoxville?
At 1h 34m, this route typically uses narrow-body aircraft — Boeing 737 or Airbus A320. Varies by airline.
What is the carbon footprint of a flight from Dulles to Knoxville?
Roughly 78 kg CO2 per passenger one-way. That's about the same as driving 390 km.
Is the return flight from Knoxville to Dulles also nonstop?
Yes — nonstop flights run both ways. Flight time may differ slightly due to wind patterns.
When is the cheapest time to fly from Dulles to Knoxville?
Midweek flights (Tue/Wed) outside holiday peaks are usually cheapest. 3-6 weeks ahead is a good window for this route. Use "Check Prices" above to compare.
How early should I arrive at Washington Dulles International for this flight?
1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.