San Francisco (SFO) to Chicago (ORD) flights
United Airlines, American Airlines fly nonstop from San Francisco International Airport to Chicago O'Hare International Airport, with about 116 flights a week in July 2026. The 1,846-mile flight takes about 4h 18m gate to gate.
- Distance
- 1,846 mi ยท 2,971 km
- Flight time
- 4h 18m
- Airlines
- 2
- Seats filled
- 87%
Airlines flying SFO to ORD
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| United Airlines | 76 | Airbus A321, Boeing 757-300, Boeing 737-900ER | 718,983 | 4h 18m |
| American Airlines | 40 | Boeing 737-800, Airbus A321, Boeing 737 MAX 8 | 268,058 | 4h 18m |
| Alaska AirlinesSeasonal or ended | n/a | Boeing 737 MAX 9, Boeing 737-900ER | 2,928 | 4h 26m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
SFO to ORD flight schedule
30 flight numbers flew this route in August 2026, 18 of them almost daily. The first usually leaves at 12:35am and the last at 11:30pm. 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 2847United Airlines | 12:35am | 6:56am | 21 | 95% |
| UA 1850United Airlines | 12:50am | 7:16am | 10 | 85% |
| UA 2000United Airlines | 5:00am | 11:25am | 21 | 93% |
| UA 2091United Airlines | 6:00am | 12:29pm | 31 | 92% |
| AA 2614American Airlines | 6:02am | 12:33pm | 31 | 91% |
| AA 359American Airlines | 8:00am | 2:27pm | 4 | 77% |
| UA 1568United Airlines | 8:15am | 2:50pm | 31 | 83% |
| AA 3250American Airlines | 8:29am | 3:00pm | 27 | 81% |
| UA 1921United Airlines | 10:05am | 4:36pm | 21 | 65% |
| UA 1954United Airlines | 10:05am | 4:38pm | 10 | 69% |
| AA 2543American Airlines | 10:17am | 4:46pm | 4 | 73% |
| AA 2154American Airlines | 10:58am | 5:29pm | 23 | 35% |
| UA 2317United Airlines | 12:00pm | 6:35pm | 31 | 46% |
| UA 2250United Airlines | 1:54pm | 8:26pm | 21 | 38% |
| UA 2199United Airlines | 2:05pm | 8:40pm | 12 | 58% |
| UA 1777United Airlines | 2:29pm | 9:03pm | 10 | 44% |
| AA 2550American Airlines | 2:36pm | 9:27pm | 4 | 34% |
| AA 3038American Airlines | 2:48pm | 9:35pm | 27 | 41% |
| UA 1835United Airlines | 3:10pm | 9:30pm | 21 | 19% |
| UA 2480United Airlines | 3:10pm | 9:38pm | 10 | 46% |
| AA 2537American Airlines | 4:20pm | 11:00pm | 4 | 70% |
| UA 1482United Airlines | 4:21pm | 10:59pm | 10 | 80% |
| UA 2839United Airlines | 4:30pm | 10:59pm | 21 | 43% |
| AA 2358American Airlines | 5:07pm | 11:30pm | 27 | 48% |
| UA 1375United Airlines | 6:34pm | 12:59am | 8 | 59% |
| UA 1958United Airlines | 6:38pm | 12:59am | 21 | 82% |
| UA 2278United Airlines | 10:35pm | 5:01am | 31 | 83% |
| AA 2113American Airlines | 10:53pm | 5:13am | 27 | 64% |
| AA 2554American Airlines | 11:07pm | 5:20am | 4 | 73% |
| UA 368United Airlines | 11:30pm | 5:59am | 31 | 88% |
Is SFO to ORD on time?
From September 2025 to August 2026, 75% of 5,650 flights arrived within 15 minutes of schedule and 1% were cancelled. Flights leaving around 6am were the most punctual (92%), those around 2pm the least (53%). Most delay time was caused by late-arriving aircraft (38%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| United Airlines | 3,885 | 77% | 17 min | 0.7% |
| American Airlines | 1,765 | 72% | 33 min | 1.6% |
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 |
|---|---|---|---|
| 12am to 1am | 163 | 83% | |
| 5am to 6am | 222 | 94% | |
| 6am to 7am | 686 | 92% | |
| 7am to 8am | 140 | 91% | |
| 8am to 9am | 530 | 82% | |
| 10am to 11am | 623 | 71% | |
| 12pm to 1pm | 253 | 56% | |
| 1pm to 2pm | 432 | 60% | |
| 2pm to 3pm | 390 | 53% | |
| 3pm to 4pm | 383 | 62% | |
| 4pm to 5pm | 350 | 75% | |
| 5pm to 6pm | 127 | 68% | |
| 6pm to 7pm | 241 | 74% | |
| 10pm to 11pm | 285 | 84% | |
| 11pm to 12am | 761 | 79% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 510 | 101,566 | |
| September 2025 | 488 | 86,077 | |
| October 2025 | 524 | 90,840 | |
| November 2025 | 403 | 67,715 | |
| December 2025 | 388 | 70,618 | |
| January 2026 | 327 | 57,170 | |
| February 2026 | 357 | 56,103 | |
| March 2026 | 446 | 76,180 | |
| April 2026 | 508 | 84,085 | |
| May 2026 | 557 | 96,828 | |
| June 2026 | 523 | 105,396 | |
| July 2026 | 515 | 97,695 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.