Flight profile · SkyWest Airlines
OO5799
Milwaukee (MKE) to Chicago (ORD) · scheduled 5:15 AM – 6:20 AM
How OO5799 performs
687 operations, 2024-03-08 to 2026-06-25.
OO5799 arrived on time 86.9% of the time, against 72.5% for all MKE → ORD flights — this specific departure is 14.5 percentage points better than the route as a whole. Against SkyWest Airlines’s own flights on this route it is 14.8 points better.
Source: US DOT Bureau of Transportation Statistics · 687 operations between 2024-03-08 to 2026-06-25
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| OO5799 | 86.9% | 1.89% | -20 min | 5.9% | 687 |
| SkyWest Airlines on MKE → ORD | 72.1% | 2.65% | -3 min | 12.6% | 10,076 |
| All MKE → ORD flights | 72.5% | 2.79% | -3 min | 12.4% | 10,637 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-03-08 to 2026-06-25
Other routes OO5799 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 |
|---|---|---|---|
| FCA→DEN Kalispell to Denver | 2026-05-21 – 2026-05-25 | 3 | — |
| PHX→LAX Phoenix to Los Angeles | 2025-03-30 – 2025-04-30 | 32 | — |
| ORD→TVC Chicago to Traverse City | 2025-03-06 – 2025-03-29 | 24 | — |
| ORD→DAY Chicago to Dayton | 2025-02-13 – 2025-03-05 | 21 | — |
| IAH→MEM Houston to Memphis | 2023-11-01 – 2023-11-27 | 18 | — |
| MLI→DEN Moline to Denver | 2023-10-29 – 2023-10-29 | 1 | — |
| IAH→DTW Houston to Detroit | 2023-10-14 – 2023-10-15 | 2 | — |
| DTW→IAH Detroit to Houston | 2023-09-30 – 2023-09-30 | 1 | — |
| IAH→SAT Houston to San Antonio | 2023-08-11 – 2023-08-31 | 15 | — |
Because the same number has served different journeys, the statistics above describe only the route OO5799 currently operates. Blending them would produce an average of two different flights.
Why OO5799 runs late
Where US DOT attributed the delay minutes on this flight.
crew, maintenance, boarding, fuelling — within the carrier’s control
the inbound aircraft was late, so this flight started late
weather severe enough to stop this flight specifically
airspace and airport capacity, including weather-driven flow control
Share of the delay minutes US DOT attributed to each cause for OO5799 on MKE → ORD. A single late flight can carry more than one cause, and only delays of fifteen minutes or more are attributed at all.
Other departures on MKE → ORD
Same airports, same journey — and not the same odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| OO4803 | SkyWest Airlines | 81.7% | 6 min early | 970 |
| OO5402 | SkyWest Airlines | 74.4% | 1 min early | 1,027 |
| OO4740 | SkyWest Airlines | 74.1% | 1 min early | 960 |
| OO5648 | SkyWest Airlines | 58.2% | 9 min late | 867 |
Every departure listed carries at least 600 operations, so the comparison is between figures that mean something. Schedules change; confirm the departure still operates before booking around this.
Data and methodology
Calculated by FlyerIntel from 687 records of OO5799 operating MKE → 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.