Direct (nonstop) flights from Houston to Knoxville
1 airline flys nonstop from George Bush Intcntl Houston (IAH) to Mc Ghee Tyson (TYS). It's 771 miles (1,241 km), about 2h 16m in the air. Operated by United Airlines.
United Airlines
Route data last updated: May 31, 2026
Airlines with non-stop flights
UA
United Airlines
Alternative Routes
Other ways to fly from Houston to Knoxville with one stop · direct emits 143 kg CO₂ per passenger
Looking for the return flight?
TYS → IAH: Flights from Knoxville to HoustonOther direct flights from Houston
Direct flights from Knoxville (TYS)
Frequently Asked Questions
How long is the direct flight from Houston to Knoxville?
A nonstop flight from Houston (IAH) to Knoxville (TYS) takes approximately 2 hours and 16 minutes. The distance is 771 miles (1,241 km).
Which airlines fly nonstop from Houston to Knoxville?
Just United Airlines.
Is there a nonstop flight from Houston to Knoxville?
Yes. 1 airline: United Airlines.
How far is Houston from Knoxville?
The flight distance from Houston to Knoxville is 771 miles (1,241 km), measured as the great-circle (shortest air) distance. That's roughly the same distance as London to Madrid.
What type of aircraft flies from Houston to Knoxville?
At 2h 16m, this route typically uses narrow-body or mid-range jets — Boeing 737 MAX or Airbus A320neo. Varies by airline.
What is the carbon footprint of a flight from Houston to Knoxville?
Roughly 143 kg CO2 per passenger one-way. That's about the same as driving 715 km.
Is the return flight from Knoxville to Houston 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 Houston 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 George Bush Intcntl Houston for this flight?
1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.