Houston (IAH) to Chicago (ORD) flights
United Airlines, American Airlines, Republic Airline, Frontier Airlines fly nonstop from George Bush Intercontinental Airport to Chicago O'Hare International Airport, with about 120 flights a week in July 2026. The 925-mile flight takes about 2h 46m gate to gate.
- Distance
- 925 mi ยท 1,489 km
- Flight time
- 2h 46m
- Airlines
- 4
- Seats filled
- 82%
Airlines flying IAH to ORD
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| United Airlines | 82 | Airbus A321, Boeing 737-900ER, Boeing 737 MAX 9 | 616,472 | 2h 46m |
| American Airlines | 26 | Airbus A319, Boeing 737-800, Boeing 737 MAX 8 | 85,993 | 2h 44m |
| Republic Airline | 6 | Embraer E175 | 23,913 | 2h 51m |
| Frontier Airlines | 6 | Airbus A321, Airbus A320neo, Airbus A320-100/200 | 47,936 | 2h 44m |
| Envoy AirSeasonal or ended | n/a | Embraer E175, Embraer E170 | 22,205 | 2h 47m |
| Spirit AirlinesCeased operations 2026-05-02 | n/a | Airbus A321, Airbus A320-100/200, Airbus A320neo | 47,966 | 2h 42m |
| SkyWest AirlinesSeasonal or ended | n/a | Bombardier CRJ200, Embraer E175, Bombardier CRJ700 | 144 | 2h 56m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
IAH to ORD flight schedule
25 flight numbers flew this route in August 2026, 18 of them almost daily. The first usually leaves at 5:00am and the last at 10:19pm. 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 1044United Airlines | 5:00am | 7:55am | 31 | 97% |
| AA 3106American Airlines | 6:07am | 9:05am | 31 | 89% |
| UA 2616United Airlines | 6:15am | 9:09am | 31 | 87% |
| UA 2182United Airlines | 7:20am | 10:15am | 31 | 89% |
| UA 1617United Airlines | 8:25am | 11:20am | 31 | 90% |
| UA 2124United Airlines | 9:30am | 12:25pm | 31 | 85% |
| AA 2504American Airlines | 11:24am | 2:19pm | 27 | 65% |
| AA 1909American Airlines | 11:26am | 2:17pm | 4 | 64% |
| UA 2417United Airlines | 11:55am | 2:50pm | 21 | 77% |
| UA 2827United Airlines | 11:55am | 2:51pm | 10 | 67% |
| F9 1882Frontier Airlines | 12:53pm | 3:59pm | 6 | 64% |
| AA 3322American Airlines | 1:16pm | 4:16pm | 24 | 80% |
| AA 1915American Airlines | 1:36pm | 4:35pm | 4 | 53% |
| UA 2458United Airlines | 1:41pm | 4:39pm | 10 | 67% |
| UA 699United Airlines | 1:45pm | 4:41pm | 31 | 65% |
| UA 1813United Airlines | 3:34pm | 6:30pm | 21 | 71% |
| AA 2329American Airlines | 4:40pm | 7:44pm | 27 | 52% |
| UA 1464United Airlines | 5:06pm | 8:05pm | 21 | 33% |
| UA 2135United Airlines | 5:09pm | 8:05pm | 10 | 63% |
| AA 2416American Airlines | 6:37pm | 9:46pm | 27 | 42% |
| UA 2197United Airlines | 6:40pm | 9:32pm | 31 | 66% |
| AA 1913American Airlines | 6:48pm | 10:01pm | 4 | 46% |
| UA 1752United Airlines | 8:35pm | 11:26pm | 31 | 72% |
| F9 3136Frontier Airlines | 9:42pm | 12:33am | 25 | 71% |
| UA 787United Airlines | 10:19pm | 12:59am | 31 | 72% |
Is IAH to ORD on time?
From September 2025 to August 2026, 75% of 6,142 flights arrived within 15 minutes of schedule and 1.5% were cancelled. Flights leaving around 5am were the most punctual (95%), those around 5pm the least (57%). Most delay time was caused by air traffic control and airport congestion (44%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| United Airlines | 4,084 | 78% | 16 min | 0.6% |
| American Airlines | 1,544 | 70% | 31 min | 3% |
| Frontier Airlines | 275 | 68% | 47 min | 3.6% |
| Spirit Airlines | 239 | 62% | 28 min | 5% |
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 |
|---|---|---|---|
| 5am to 6am | 343 | 95% | |
| 6am to 7am | 690 | 84% | |
| 7am to 8am | 443 | 88% | |
| 8am to 9am | 406 | 88% | |
| 9am to 10am | 283 | 86% | |
| 10am to 11am | 225 | 80% | |
| 11am to 12pm | 515 | 72% | |
| 12pm to 1pm | 127 | 74% | |
| 1pm to 2pm | 435 | 71% | |
| 2pm to 3pm | 354 | 70% | |
| 4pm to 5pm | 221 | 59% | |
| 5pm to 6pm | 473 | 57% | |
| 6pm to 7pm | 656 | 58% | |
| 8pm to 9pm | 348 | 71% | |
| 9pm to 10pm | 287 | 81% | |
| 10pm to 11pm | 182 | 79% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 525 | 73,183 | |
| September 2025 | 534 | 69,599 | |
| October 2025 | 514 | 70,585 | |
| November 2025 | 450 | 59,992 | |
| December 2025 | 509 | 68,199 | |
| January 2026 | 464 | 60,801 | |
| February 2026 | 434 | 57,340 | |
| March 2026 | 496 | 71,676 | |
| April 2026 | 507 | 73,241 | |
| May 2026 | 537 | 80,019 | |
| June 2026 | 513 | 79,625 | |
| July 2026 | 532 | 80,770 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.