Flight profile · SkyWest Airlines
OO4129
Minneapolis (MSP) to Washington (IAD) · scheduled 8:05 PM – 11:39 PM
How OO4129 performs
556 operations, 2024-06-07 to 2026-06-30.
OO4129 arrived on time 79.9% of the time, against 82.3% for all MSP → IAD flights — this specific departure is 2.4 percentage points worse than the route as a whole. Against SkyWest Airlines’s own flights on this route it is 1.8 points worse.
Source: US DOT Bureau of Transportation Statistics · 556 operations between 2024-06-07 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| OO4129 | 79.9% | 1.62% | -8 min | 6.2% | 556 |
| SkyWest Airlines on MSP → IAD | 81.7% | 0.71% | -6 min | 5.2% | 2,541 |
| All MSP → IAD flights | 82.3% | 0.68% | -6 min | 5.1% | 2,775 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-06-07 to 2026-06-30
Other routes OO4129 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 |
|---|---|---|---|
| MSP→RAP Minneapolis to Rapid City | 2025-09-11 – 2025-10-05 | 22 | — |
| RAP→MSP Rapid City to Minneapolis | 2025-09-11 – 2025-10-05 | 22 | — |
| BHM→DTW Birmingham to Detroit | 2024-04-13 – 2024-05-04 | 10 | — |
| DTW→BHM Detroit to Birmingham | 2024-04-13 – 2024-05-04 | 10 | — |
| ORD→JFK Chicago to New York | 2024-01-08 – 2024-04-08 | 92 | 77.3% |
| JFK→ORD New York to Chicago | 2023-11-05 – 2023-12-15 | 39 | — |
| LAS→SAN Las Vegas to San Diego | 2023-10-28 – 2023-11-04 | 8 | — |
| SAN→LAS San Diego to Las Vegas | 2023-10-28 – 2023-11-04 | 8 | — |
| SLC→ABQ Salt Lake City to Albuquerque | 2023-09-05 – 2023-10-27 | 53 | — |
| DTW→TVC Detroit to Traverse City | 2023-08-08 – 2023-08-30 | 8 | — |
| TVC→DTW Traverse City to Detroit | 2023-08-08 – 2023-08-30 | 8 | — |
| BOI→SEA Boise to Seattle | 2023-08-25 – 2023-08-27 | 3 | — |
| SMF→LAX Sacramento to Los Angeles | 2023-07-04 – 2023-07-09 | 2 | — |
Because the same number has served different journeys, the statistics above describe only the route OO4129 currently operates. Blending them would produce an average of two different flights.
Why OO4129 runs late
Where US DOT attributed the delay minutes on this flight.
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 OO4129 on MSP → IAD. A single late flight can carry more than one cause, and only delays of fifteen minutes or more are attributed at all.
Data and methodology
Calculated by FlyerIntel from 556 records of OO4129 operating MSP → IAD, 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.