Houston Bush (IAH) or Houston Hobby (HOU)?
You can fly nonstop from Knoxville to both. Pick the one closest to where you're going.
IAH: pick it if you're staying on the north side of Houston or in The Woodlands. HOU: pick it if you're headed downtown, south of the city, or to Galveston.
Houston Bush Intercontinental (IAH)
Houston's biggest airport, north of the city.
- Airline
- United
- Status
- Days
- Every day
- Flight time
- About 2 hr 35 min
- Next flight
- Thursday, October 29, 7:00 am
- Cheapest fare seen
- $289 one way
Pick IAH if you're staying on the north side of Houston or in The Woodlands.
Check prices on Google FlightsHouston Hobby (HOU)
A smaller airport southeast of downtown, closer to the city center, NASA and Galveston.
- Airline
- Allegiant
- Status
- Days
- Mondays, Wednesdays, Fridays and Sundays
- Flight time
- About 2 hr 20 min
- Next flight
- Friday, October 30, 2:54 pm
- Cheapest fare seen
- $64 one way
Pick HOU if you're headed downtown, south of the city, or to Galveston.
Book on Allegiant's websiteSee the full Knoxville to Houston schedule
Common questions
Can I fly nonstop from Knoxville to both Houston airports?
Yes. United flies nonstop to Houston Bush Intercontinental (IAH). Allegiant flies nonstop to Houston Hobby (HOU).
When should I fly into Houston Bush Intercontinental (IAH)?
Pick IAH if you're staying on the north side of Houston or in The Woodlands.
When should I fly into Houston Hobby (HOU)?
Pick HOU if you're headed downtown, south of the city, or to Galveston.
Flight days and times last checked Wednesday, October 28, 2026 using Google Flights. We check every week. The list of nonstop destinations comes from McGhee Tyson Airport's official nonstop list (checked October 26, 2026).Schedules can change, so always confirm your exact flight with the airline. How we check flights.