Knoxville/Maryville (TYS) to Houston (IAH) flights
Mesa Airlines, CommuteAir fly nonstop from McGhee Tyson Airport to George Bush Intercontinental Airport, with about 21 flights a week in July 2026. The 771-mile flight takes about 2h 29m gate to gate.
- Distance
- 771 mi · 1,241 km
- Flight time
- 2h 29m
- Airlines
- 2
- Seats filled
- 89%
Airlines flying TYS to IAH
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Mesa Airlines | 20 | Embraer E175 | 15,980 | 2h 23m |
| CommuteAir | <1 | Embraer ERJ-145 | 48,318 | 2h 31m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
TYS to IAH flight schedule
6 flight numbers flew this route in August 2026, 2 of them almost daily. The first usually leaves at 7:15am and the last at 3:40pm. 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 6259United Airlines · operated by Mesa Airlines | 7:15am | 8:44am | 19 | 100% |
| UA 6298United Airlines · operated by Mesa Airlines | 7:15am | 8:40am | 10 | 73% |
| UA 6299United Airlines · operated by Mesa Airlines | 12:10pm | 1:32pm | 8 | 88% |
| UA 6134United Airlines · operated by Mesa Airlines | 2:21pm | 3:50pm | 21 | 100% |
| UA 4046United Airlines · operated by Mesa Airlines | 3:25pm | 4:50pm | 10 | 83% |
| UA 6264United Airlines · operated by Mesa Airlines | 3:40pm | 5:09pm | 20 | 100% |
Is TYS to IAH on time?
From September 2025 to August 2026, 84% of 1,305 flights arrived within 15 minutes of schedule and 1.1% were cancelled. Flights leaving around 12pm were the most punctual (90%), those around 5pm the least (75%). Most delay time was caused by late-arriving aircraft (45%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| United Airlines | 1,305 | 84% | 18 min | 1.1% |
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 |
|---|---|---|---|
| 6am to 7am | 36 | 76% | |
| 7am to 8am | 324 | 81% | |
| 9am to 10am | 229 | 87% | |
| 11am to 12pm | 206 | 88% | |
| 12pm to 1pm | 136 | 90% | |
| 3pm to 4pm | 124 | 76% | |
| 4pm to 5pm | 128 | 81% | |
| 5pm to 6pm | 101 | 75% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 124 | 5,708 | |
| September 2025 | 116 | 5,448 | |
| October 2025 | 126 | 5,769 | |
| November 2025 | 119 | 5,371 | |
| December 2025 | 119 | 5,673 | |
| January 2026 | 103 | 4,523 | |
| February 2026 | 106 | 4,989 | |
| March 2026 | 120 | 5,435 | |
| April 2026 | 119 | 5,608 | |
| May 2026 | 92 | 4,891 | |
| June 2026 | 89 | 5,432 | |
| July 2026 | 91 | 5,496 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.