Flight profile · SkyWest Airlines
OO5436
Fort Wayne (FWA) to Chicago (ORD) · scheduled 4:45 PM – 5:10 PM
How OO5436 performs
1,077 operations, 2023-07-01 to 2026-06-30.
OO5436 arrived on time 67.9% of the time, against 70.6% for all FWA → ORD flights — this specific departure is 2.7 percentage points worse than the route as a whole. Against SkyWest Airlines’s own flights on this route it is 2.0 points worse.
Source: US DOT Bureau of Transportation Statistics · 1,077 operations between 2023-07-01 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| OO5436 | 67.9% | 3.25% | 0 min | 16.4% | 1,077 |
| SkyWest Airlines on FWA → ORD | 69.9% | 3.20% | -2 min | 14.6% | 4,781 |
| All FWA → ORD flights | 70.6% | 3.11% | -2 min | 14.2% | 5,492 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30
By day of week
Does OO5436 run worse on particular days?
Tuesday is historically the most reliable day and Friday the least, a gap of 19.0 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 OO5436 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→HRL Chicago to Harlingen | 2024-04-06 – 2024-04-27 | 4 | — |
Because the same number has served different journeys, the statistics above describe only the route OO5436 currently operates. Blending them would produce an average of two different flights.
Why OO5436 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 OO5436 on FWA → 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 FWA → ORD
Same airports, same journey — and not the same odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| OO5434 | SkyWest Airlines | 78.7% | 4 min early | 916 |
| OO4784 | SkyWest Airlines | 72.1% | 5 min early | 954 |
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 1,077 records of OO5436 operating FWA → 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.
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