Flight profile · United Airlines
UA516
Atlanta (ATL) to Chicago (ORD) · scheduled 3:30 PM – 4:51 PM
How UA516 performs
959 operations, 2023-09-05 to 2026-06-30.
UA516 arrived on time 78.9% of the time, against 74.3% for all ATL → ORD flights — this specific departure is 4.6 percentage points better than the route as a whole. Against United Airlines’s own flights on this route it is 1.1 points worse.
Source: US DOT Bureau of Transportation Statistics · 959 operations between 2023-09-05 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA516 | 78.9% | 0.94% | -6 min | 8.8% | 959 |
| United Airlines on ATL → ORD | 79.9% | 1.18% | -6 min | 7.6% | 4,734 |
| All ATL → ORD flights | 74.3% | 1.63% | -3 min | 9.3% | 17,984 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-09-05 to 2026-06-30
By day of week
Does UA516 run worse on particular days?
Saturday is historically the most reliable day and Thursday the least, a gap of 16.2 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · 2023-09-05 to 2026-06-30 · Days with fewer than 120 operations are not scored.
Other routes UA516 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→BDL Chicago to Hartford | 2026-03-05 – 2026-06-30 | 113 | 49.5% |
| ORD→ONT Chicago to Ontario | 2025-12-18 – 2026-01-05 | 19 | — |
| ORD→TVC Chicago to Traverse City | 2025-10-26 – 2025-12-17 | 52 | — |
| RSW→IAD Fort Myers to Washington | 2025-11-27 – 2025-11-27 | 1 | — |
| ORD→SNA Chicago to Santa Ana | 2024-08-19 – 2025-10-24 | 91 | 78.7% |
| ORD→DFW Chicago to Dallas–Fort Worth | 2024-12-03 – 2025-07-31 | 169 | 57.2% |
| SRQ→ORD Sarasota/Bradenton to Chicago | 2023-12-21 – 2025-03-29 | 42 | — |
| ORD→DEN Chicago to Denver | 2024-11-30 – 2024-12-01 | 2 | — |
| ORD→LAS Chicago to Las Vegas | 2024-06-27 – 2024-08-18 | 52 | — |
| ORD→PHX Chicago to Phoenix | 2024-05-23 – 2024-06-26 | 35 | — |
| EWR→ATL Newark to Atlanta | 2024-05-02 – 2024-05-22 | 18 | — |
| ORD→BZN Chicago to Bozeman | 2024-05-02 – 2024-05-22 | 18 | — |
| ORD→DSM Chicago to Des Moines | 2023-12-21 – 2024-03-06 | 40 | — |
| IAH→MFE Houston to McAllen | 2024-01-13 – 2024-01-13 | 1 | — |
| ORD→CHS Chicago to Charleston | 2023-11-23 – 2023-11-23 | 1 | — |
| ORD→CID Chicago to Cedar Rapids | 2023-09-29 – 2023-09-30 | 2 | — |
| ORD→SMF Chicago to Sacramento | 2023-09-07 – 2023-09-28 | 13 | — |
| LGA→DEN New York to Denver | 2023-09-09 – 2023-09-23 | 3 | — |
| CLT→EWR Charlotte to Newark | 2023-07-01 – 2023-09-04 | 66 | — |
Because the same number has served different journeys, the statistics above describe only the route UA516 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 959 records of UA516 operating ATL → 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.