Houston (IAH) to Louisville (SDF) flights
Mesa Airlines flies nonstop from George Bush Intercontinental Airport to Louisville Muhammad Ali International Airport, with about 21 flights a week in July 2026. The 788-mile flight takes about 2h 16m gate to gate.
- Distance
- 788 mi · 1,268 km
- Flight time
- 2h 16m
- Airlines
- 1
- Seats filled
- 77%
Airlines flying IAH to SDF
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Mesa Airlines | 21 | Embraer E175 | 59,676 | 2h 16m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
IAH to SDF flight schedule
3 flight numbers flew this route in August 2026, 3 of them almost daily. The first usually leaves at 9:45am and the last at 6:50pm. 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 3990United Airlines · operated by Mesa Airlines | 9:45am | 1:07pm | 31 | 87% |
| UA 4050United Airlines · operated by Mesa Airlines | 4:37pm | 7:59pm | 31 | 84% |
| UA 4052United Airlines · operated by Mesa Airlines | 6:50pm | 10:15pm | 31 | 85% |
Is IAH to SDF on time?
From September 2025 to August 2026, 85% of 1,075 flights arrived within 15 minutes of schedule and 1% were cancelled. Flights leaving around 8am were the most punctual (87%), those around 6pm the least (83%). Most delay time was caused by late-arriving aircraft (40%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| United Airlines | 1,074 | 85% | 12 min | 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 |
|---|---|---|---|
| 8am to 9am | 121 | 87% | |
| 9am to 10am | 51 | 84% | |
| 10am to 11am | 177 | 86% | |
| 4pm to 5pm | 357 | 85% | |
| 6pm to 7pm | 360 | 83% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 90 | 5,030 | |
| September 2025 | 89 | 5,258 | |
| October 2025 | 93 | 5,575 | |
| November 2025 | 86 | 4,319 | |
| December 2025 | 92 | 5,009 | |
| January 2026 | 82 | 4,754 | |
| February 2026 | 79 | 4,707 | |
| March 2026 | 83 | 4,761 | |
| April 2026 | 93 | 5,496 | |
| May 2026 | 96 | 4,804 | |
| June 2026 | 89 | 5,206 | |
| July 2026 | 92 | 5,543 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.