Flights Houston → Knoxville
IAH → TYS
Route overview
The flight route from Houston to Knoxville operates with a high level of punctuality, with 85% of flights arriving on time. On average, the flights experience a delay of 9.1 minutes, and there are a total of 345 scheduled flights annually. The destination airport in Knoxville serves over 1.8 million passengers per year.
Your rights on this US flight (DOT)
US flights have no statutory cash compensation for delays. Under the US DOT rules, if your flight is cancelled or significantly changed and you decline rebooking, you're owed an automatic refund of the unused ticket. The tarmac-delay limit is 3 hours (domestic) / 4 hours (international). Amenities for controllable delays depend on each airline's contract of carriage.
US flight refund rules & checker →General information, not legal advice.
The Houston (IAH) → Knoxville (TYS) route is operated by United Airlines. Across 438 flights monitored in recent months, 84% arrived on time (within 15 min of schedule), with an average delay of 11 minutes. The cancellation rate is 2.74%. FlightGuard's average computed risk is 19.5/100 (medium), updated in real time from weather, ATC delays, strikes, NOTAMs, fuel and flight history. At Knoxville the average ATFM delay is 2.0 minutes (main cause: atfm). Departing from Houston the average ATFM delay is 2.0 minutes.
Heading to Knoxville: what to expect in this direction
Flying from Houston (IAH) to Knoxville (TYS) heads north-east for about 1,241 km, a flight time of roughly 1h 58m.
Departures from Houston on this leg cluster in the morning window: about 47% of IAH-TYS flights take off then.
Air-traffic congestion: departing Houston the average ATFM delay is 2.0 min (atfm); arriving into Knoxville it is 2.0 min (atfm).
Across 438 tracked IAH-TYS flights, 84% left on time with an average delay of 11 min and a 2.7% cancellation rate.
Route facts
Flights on this route
Check the risk of a specific flight.
Flexible on this trip? Compare flights
Airline punctuality on this route
| Airline | On-time | Average delay | Cancellations |
|---|---|---|---|
| United Airlines (UA) | 74% | 10 min | 6.9% |
Airlines operating IAH-TYS
Airports
Frequently asked questions about IAH-TYS
On the Houston (IAH) -> Knoxville (TYS) route, on-time performance is 84% with an average delay of 11 minutes, based on 438 tracked flights.
The cancellation rate on Houston-Knoxville is 2.74% across 438 monitored flights.
The route is operated by 1 airline: United Airlines.
Enter your flight number on FlightGuard for a real-time analysis based on 9 factors: weather at Knoxville, ATC delays, strikes, NOTAMs, fuel, airline punctuality and recent trends.
US flights have no statutory cash compensation for delays. Under US DOT rules, if the airline cancels or significantly changes your flight and you decline rebooking, you're owed an automatic refund of the unused ticket. The tarmac-delay limit is 3 hours (domestic) / 4 hours (international). Meals or hotels for controllable delays depend on each airline's contract of carriage.
