Flight profile · United Airlines
UA303
Kansas City (MCI) to Chicago (ORD) · scheduled 8:00 AM – 5:05 PM
How UA303 performs
1,093 operations, 2023-07-01 to 2026-06-30.
UA303 arrived on time 81.6% of the time, against 79.2% for all MCI → ORD flights — this specific departure is 2.4 percentage points better than the route as a whole.
Source: US DOT Bureau of Transportation Statistics · 1,093 operations between 2023-07-01 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA303 | 81.6% | 1.19% | -5 min | 6.4% | 1,093 |
| United Airlines on MCI → ORD | 81.2% | 1.42% | -4 min | 7.1% | 4,141 |
| All MCI → ORD flights | 79.2% | 1.91% | -6 min | 8.5% | 10,568 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30
By day of week
Does UA303 run worse on particular days?
Monday is historically the most reliable day and Sunday the least, a gap of 6.7 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30 · Days with fewer than 120 operations are not scored.
Other routes UA303 has flown
A flight number is a slot in a schedule, and carriers reassign it. These are the other city pairs this number served in the analysis period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| ORD→BWI Chicago to Baltimore | 2026-05-21 – 2026-06-24 | 35 | — |
| ORD→MIA Chicago to Miami | 2026-03-05 – 2026-03-28 | 24 | — |
| ORD→IAH Chicago to Houston | 2026-01-06 – 2026-02-11 | 37 | — |
| ORD→SLC Chicago to Salt Lake City | 2025-09-25 – 2025-10-25 | 31 | — |
| DEN→DSM Denver to Des Moines | 2025-08-17 – 2025-08-17 | 1 | — |
| ORD→EWR Chicago to Newark | 2025-05-22 – 2025-06-25 | 35 | — |
| ORD→GSP Chicago to Greenville/Greer/Spartanburg | 2025-03-30 – 2025-03-31 | 2 | — |
| ORD→LGA Chicago to New York | 2023-09-05 – 2024-12-02 | 55 | — |
| LGA→DEN New York to Denver | 2024-10-27 – 2024-12-02 | 31 | — |
| ORD→SAN Chicago to San Diego | 2024-10-01 – 2024-10-26 | 26 | — |
| ORD→LAS Chicago to Las Vegas | 2024-09-01 – 2024-09-25 | 25 | — |
| ORD→ALB Chicago to Albany | 2024-08-01 – 2024-08-16 | 12 | — |
| ORD→RNO Chicago to Reno | 2024-06-27 – 2024-06-30 | 4 | — |
| ORD→GRR Chicago to Grand Rapids | 2024-03-01 – 2024-03-06 | 6 | — |
| ORD→FAT Chicago to Fresno | 2023-12-21 – 2023-12-30 | 8 | — |
| DEN→ICT Denver to Wichita | 2023-11-23 – 2023-11-23 | 1 | — |
| ORD→RSW Chicago to Fort Myers | 2023-10-01 – 2023-10-28 | 28 | — |
Because the same number has served different journeys, the statistics above describe only the route UA303 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 1,093 records of UA303 operating MCI → ORD, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.