Houston (IAH) to Knoxville/Maryville (TYS) flights
Mesa Airlines, CommuteAir fly nonstop from George Bush Intercontinental Airport to McGhee Tyson Airport, with about 21 flights a week in July 2026. The 771-mile flight takes about 2h 12m gate to gate.
- Distance
- 771 mi · 1,241 km
- Flight time
- 2h 12m
- Airlines
- 2
- Seats filled
- 88%
Airlines flying IAH to TYS
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Mesa Airlines | 20 | Embraer E175 | 15,722 | 2h 13m |
| CommuteAir | <1 | Embraer ERJ-145 | 47,011 | 2h 12m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
IAH to TYS flight schedule
6 flight numbers flew this route in August 2026, 2 of them almost daily. The first usually leaves at 8:00am and the last at 7:50pm. Times are local and can change; check with the airline before you book.
| Flight | Departs | Arrives | Days flown in August 2026 | On time (12 months) |
|---|---|---|---|---|
| UA 6115United Airlines · operated by Mesa Airlines | 8:00am | 11:19am | 8 | 91% |
| UA 6122United Airlines · operated by Mesa Airlines | 10:00am | 1:20pm | 21 | 100% |
| UA 6211United Airlines · operated by Mesa Airlines | 2:45pm | 6:07pm | 10 | 84% |
| UA 4047United Airlines · operated by Mesa Airlines | 2:57pm | 6:17pm | 21 | 100% |
| UA 6300United Airlines · operated by Mesa Airlines | 6:25pm | 9:45pm | 19 | 84% |
| UA 6206United Airlines · operated by Mesa Airlines | 7:50pm | 11:12pm | 9 | 73% |
Is IAH to TYS on time?
From September 2025 to August 2026, 85% of 1,304 flights arrived within 15 minutes of schedule and 1.3% were cancelled. Flights leaving around 10am were the most punctual (89%), those around 7pm the least (73%). Most delay time was caused by the airline (crew, maintenance, cleaning, fuelling) (47%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| United Airlines | 1,304 | 85% | 11 min | 1.3% |
Airlines as sold: flights operated by regional partners count under the airline on the ticket. Average delay is across all completed flights, early arrivals counted as zero.
On-time arrivals by departure time
| Scheduled departure | Flights | On time, relative | On time |
|---|---|---|---|
| 8am to 9am | 105 | 86% | |
| 10am to 11am | 246 | 89% | |
| 2pm to 3pm | 352 | 84% | |
| 4pm to 5pm | 240 | 86% | |
| 7pm to 8pm | 81 | 73% | |
| 8pm to 9pm | 249 | 83% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 121 | 5,457 | |
| September 2025 | 117 | 5,283 | |
| October 2025 | 124 | 5,745 | |
| November 2025 | 119 | 5,063 | |
| December 2025 | 120 | 5,352 | |
| January 2026 | 104 | 4,504 | |
| February 2026 | 104 | 4,747 | |
| March 2026 | 118 | 5,408 | |
| April 2026 | 117 | 5,745 | |
| May 2026 | 93 | 4,922 | |
| June 2026 | 90 | 5,278 | |
| July 2026 | 92 | 5,267 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.