Flight number record
OO 4002
SkyWest Airlines · Minneapolis to Appleton
- Route
- MSP → ATW
- Departs
- 20:00
- Flights
- 274
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 4002, check with SkyWest Airlines. SkyWest Airlines flies under contract for larger airlines, so a ticket for this flight may show a different airline code and number.
OO 4002 lands a B, 3 points better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by about 2.9 hours on average. That rests on 274 flights, with a median arrival 11 minutes early.
Key figures
On time
80.5%
Arrivals under 15 minutes late, of 266 completed flights
Avg delay
175 min
Across delayed arrivals only, not all flights
Cancelled
1.82%
National rate is 1.89%
1 hour+ late
12.4%
National rate is 8.3%
These figures cover 274 flights between September 2025 and August 2026. Beyond the headline rate, 12.4% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Schedule
When OO 4002 flies
OO 4002 flies MSP to ATW without a single fixed slot. Its most common scheduled departure was 20:00, used on 116 of 274 flights, with 19:50 (40 flights) and 19:54 (36 flights) next.
- Departs 20:00116 flights42.3%
- Departs 19:5040 flights14.6%
- Departs 19:5436 flights13.1%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 20:00 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and OO 4002 runs 10 points better at 80.5%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Against the route
OO 4002 next to MSP to ATW
Every carrier on MSP to ATW combined arrived on time 78.9% of the time across 864 flights, so OO 4002 is 2 points ahead of it. Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 2 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 4002thin sample | 274 | 80.5% | 175 min | 1.82% | B |
| All SkyWest Airlines on MSP–ATW | 864 | 78.9% | 108 min | 1.85% | B |
| All carriers on MSP–ATW | 864 | 78.9% | 108 min | 1.85% | B |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 4002 quarter by quarter
OO 4002 did not run the same all year. Its best quarter was Jul–Sep 2025 at 93.3% on time and its weakest Oct–Dec 2025 at 74.2%, a swing of 19 points on roughly 69 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.
- Jul–Sep 202530 flights93.3%
- Oct–Dec 202591 flights74.2%
- Jan–Mar 202688 flights78.3%
- Apr–Jun 202665 flights85.9%
Scale runs 65% to 100%.
By weekday, OO 4002 ranged from 74.4% on Wednesday to 85.7% on Saturday. With about 39 flights behind each day, a spread of 11 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late OO 4002 runs when it is late
OO 4002 often beats the schedule: 107 of 266 completed flights, 40%, arrived 15 minutes or more early. When OO 4002 is late it tends to be very late: 33 of its 52 late arrivals were an hour or more behind, and 16 were two hours or more.
- 15+ min early107 flights40.2%
- Within 15 min107 flights40.2%
- 15–29 min late10 flights3.8%
- 30–59 min late9 flights3.4%
- 1–2 hours late17 flights6.4%
- 2+ hours late16 flights6.0%
Scale runs 0% to 100%.
Share of 266 completed flights by arrival against schedule.
12 of 56 late departures made up the time and arrived on time, 21% of them. 8 flights left on time and still arrived late.
The worst days
Worst days for OO 4002
The latest arrival of the period was on 30 January 2026, 14 hours 29 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on five of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 30 January 2026 | 14 hours 29 minutes | Carrier |
| 14 April 2026 | 14 hours 7 minutes | Carrier |
| 25 March 2026 | 12 hours 25 minutes | Carrier |
| 19 May 2026 | 11 hours 52 minutes | Carrier |
| 18 May 2026 | 11 hours 50 minutes | Carrier |
Delay causes
Why OO 4002 runs late
Carrier accounts for 74% of the 9,117 delay minutes carriers reported here, and the remaining four split what is left.
- 74%Carrier
- 20%Extreme weather
- 6%National Airspace System
Extreme weather accounts for 20% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 3.3 times the usual weather exposure. The split is drawn from 9,117 delay minutes reported on OO 4002.
Cancellations sit at 1.82% against a national 1.89%, which is ordinary. Diversions add another 1.09%.
Connections and routes
What a delay on this flight costs
12.4% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
The same number turns up on one other city pair in the data, including SAN to LAX (86), but none flew often enough under OO 4002 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to MSP to ATW only.
One caution: this is a thin sample. 274 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking OO 4002
For a booking, OO 4002 is a flight to put a long connection behind. 12.4% of its completed flights arrived an hour or more late, which a short layover will not absorb. If the onward flight is on a separate ticket, the risk sits with you.
Related
Where to go next
- MSP to ATW, every carrier and departure
- ATW to MSP, the return direction
- Minneapolis-St Paul International (MSP) delay statistics
- SkyWest Airlines on-time record
- Every SkyWest Airlines flight number with a record
- The most and least reliable flight numbers in the US
- How often a connection fails at the major US hubs
A flight number here means SkyWest Airlines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.