Flight profile · SkyWest Airlines
OO5499
Chicago (ORD) to South Bend (SBN) · scheduled 7:35 PM – 9:37 PM
How OO5499 performs
722 operations, 2024-06-27 to 2026-06-30.
OO5499 arrived on time 62.5% of the time, against 69.0% for all ORD → SBN flights — this specific departure is 6.6 percentage points worse than the route as a whole. Against SkyWest Airlines’s own flights on this route it is 6.4 points worse.
Source: US DOT Bureau of Transportation Statistics · 722 operations between 2024-06-27 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| OO5499 | 62.5% | 2.77% | 4 min | 19.8% | 722 |
| SkyWest Airlines on ORD → SBN | 68.9% | 2.88% | -1 min | 13.6% | 6,697 |
| All ORD → SBN flights | 69.0% | 2.86% | -1 min | 13.5% | 6,747 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-06-27 to 2026-06-30
Other routes OO5499 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 |
|---|---|---|---|
| MSN→DEN Madison to Denver | 2024-05-23 – 2024-06-26 | 35 | — |
| DAY→ORD Dayton to Chicago | 2024-05-02 – 2024-05-22 | 21 | — |
| DEN→MKE Denver to Milwaukee | 2024-04-02 – 2024-04-30 | 5 | — |
| DFW→DEN Dallas–Fort Worth to Denver | 2024-03-04 – 2024-03-04 | 1 | — |
| IAH→MSY Houston to New Orleans | 2024-01-11 – 2024-02-12 | 18 | — |
| MKE→DEN Milwaukee to Denver | 2023-10-29 – 2024-01-08 | 71 | — |
| IAH→HRL Houston to Harlingen | 2023-10-14 – 2023-10-14 | 1 | — |
| ORD→CAK Chicago to Akron | 2023-07-05 – 2023-09-30 | 67 | — |
Because the same number has served different journeys, the statistics above describe only the route OO5499 currently operates. Blending them would produce an average of two different flights.
Why OO5499 runs late
Where US DOT attributed the delay minutes on this flight.
the inbound aircraft was late, so this flight started late
crew, maintenance, boarding, fuelling — within the carrier’s control
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for OO5499 on ORD → SBN. 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 ORD → SBN
Same airports, same journey — and not the same odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| OO4791 | SkyWest Airlines | 73.1% | 5 min early | 974 |
| OO5564 | SkyWest Airlines | 70.5% | 0 min early | 716 |
| OO5274 | SkyWest Airlines | 70.0% | 0 min early | 729 |
| OO4636 | SkyWest Airlines | 63.5% | 1 min late | 1,015 |
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 722 records of OO5499 operating ORD → SBN, 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.