Leave before 9 am: 9 in 10 depart on time. After 4 pm it’s 7 in 10.
Time of day × airport
Share of this route’s flights leaving within 15 minutes, by airport and scheduled departure hour, over Aug 2025 – Jul 2026. Blank: no flights then (or fewer than 40 in the year).
Pick an hour to see this route’s flights leaving then.
Flights, best and worst
Flights in the Jun 6 – Jul 31, 2026 schedule that ran 150+ times in the year. Times are local. Pick a flight for its history.
| UA 4381flown by GoJet | BUF 13:54 | ORD 14:55 | 73% |
All 6 United flights in the current schedule
Every flight that flew in the Jun 6 – Jul 31, 2026 schedule, with its record over Aug 2025 – Jul 2026. Times are local. Click a column to sort.
| UA 5820flown by SkyWest | BUF 07:00 | ORD 08:05 | 2h 05m | 29 | 89% | 3.4% | 56 min |
| UA 543 | BUF 07:00 | ORD 07:59 | 1h 59m | 141 | 85% | 2.8% | 67 min |
| UA 4690flown by SkyWest | BUF 10:50 | ORD 11:53 | 2h 03m | 35 | 83% | 0.0% | 241 min |
| UA 705 | BUF 10:57 | ORD 11:57 | 2h 00m | 37 | 89% | 0.0% | 151 min |
| UA 4381flown by GoJet | BUF 13:54 | ORD 14:55 | 2h 01m | 296 | 73% | 2.7% | 134 min |
| UA 2747 | BUF 18:04 | ORD 19:03 | 1h 59m | 69 | 63% | 1.4% | 116 min |
Nonstops by airline and airport
Arriving within 15 minutes, Aug 2025 – Jul 2026. Pick a row to see that airline’s flights on that airport pair.
| United | BUF | ORD | 2h 03m | 72% | 3.0% | 1,316 | Flying now |
About this data: US DOT on-time records, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. Schedules (which flights and connections exist, and their times) are as of Jun 6 – Jul 31, 2026; seasonal flights outside that window aren’t ranked. Rebuilt monthly. JSON