Flight number record
OO 4033
SkyWest Airlines · Atlanta to South Bend
- Route
- ATL → SBN
- Departs
- 14:24
- Flights
- 300
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 4033, 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 4033 sits in the middle of the pack with a B. Close to three flights in four arrive on time by the DOT's definition, 2 points worse than the national rate of 77.3%. The late ones land a little over an hour behind schedule. That rests on 300 flights, with a median arrival 6 minutes early.
Key figures
On time
75.1%
Arrivals under 15 minutes late, of 293 completed flights
Avg delay
76 min
Across delayed arrivals only, not all flights
Cancelled
2.00%
National rate is 1.89%
1 hour+ late
9.2%
National rate is 8.3%
These figures cover 300 flights between September 2025 and August 2026. Beyond the headline rate, 9.2% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When OO 4033 flies
OO 4033 flies ATL to SBN without a single fixed slot. Its most common scheduled departure was 14:24, used on 56 of 300 flights, with 14:25 (48 flights) and 14:20 (31 flights) next.
- Departs 14:2456 flights18.7%
- Departs 14:2548 flights16.0%
- Departs 14:2031 flights10.3%
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 14:24 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and OO 4033 runs 3 points better at 75.1%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
OO 4033 next to ATL to SBN
Every carrier on ATL to SBN combined arrived on time 74.5% of the time across 1,030 flights, so OO 4033 is about level with it. SkyWest flew 1,029 flights on the same city pair under all its flight numbers, including this one, and those ran 74.4% on time. Across its whole network SkyWest Airlines managed 78.7%, which this flight trails by 4 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 4033thin sample | 300 | 75.1% | 76 min | 2.00% | B |
| All SkyWest Airlines on ATL–SBN | 1,029 | 74.4% | 106 min | 2.04% | C |
| All carriers on ATL–SBN | 1,030 | 74.5% | 106 min | 2.04% | C |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 4033 quarter by quarter
OO 4033 did not run the same all year. Its best quarter was Oct–Dec 2025 at 82.4% on time and its weakest Jan–Mar 2026 at 57.5%, a swing of 25 points on roughly 75 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 202520 flights—
- Oct–Dec 202576 flights82.4%
- Jan–Mar 202674 flights57.5%
- Apr–Jun 202677 flights80.0%
- Jul–Sep 202653 flights72.5%
Scale runs 50% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, OO 4033 did best on Wednesday at 80.9% on time and worst on Monday at 65.4%. Each day rests on about 43 flights, so a gap of 16 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 4033 runs when it is late
The 73 late arrivals split 20 under half an hour, 26 between 30 and 60 minutes, and 27 an hour or more.
- 15+ min early73 flights24.9%
- Within 15 min147 flights50.2%
- 15–29 min late20 flights6.8%
- 30–59 min late26 flights8.9%
- 1–2 hours late15 flights5.1%
- 2+ hours late12 flights4.1%
Scale runs 0% to 100%.
Share of 293 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 59 departures that left 15 minutes late or more, only 4 made it up before arrival. In the other direction, 18 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at SBN.
The worst days
Worst days for OO 4033
The latest arrival of the period was on 7 December 2025, 6 hours 47 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 7 December 2025 | 6 hours 47 minutes | Carrier |
| 8 October 2025 | 5 hours 7 minutes | Carrier |
| 19 January 2026 | 4 hours 51 minutes | Carrier |
| 14 June 2026 | 3 hours 49 minutes | Extreme weather |
| 11 March 2026 | 3 hours 48 minutes | National Airspace System |
Delay causes
Why OO 4033 runs late
Carrier accounts for 64% of the 5,517 delay minutes carriers reported here, and the remaining four split what is left.
- 64%Carrier
- 21%Extreme weather
- 14%National Airspace System
Extreme weather accounts for 21% 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 3.5 times the usual weather exposure. The split is drawn from 5,517 delay minutes reported on OO 4033.
Cancellations sit at 2.00% against a national 1.89%, which is ordinary. Diversions add another 0.33%.
Connections and routes
What a delay on this flight costs
9.2% 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 566 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.
OO 4033 is not only a ATL to SBN flight. It also flew SBN to ATL (300 flights, 68.3% on time) often enough to be scored on its own. Airlines attach one number to several legs of an aircraft's day, and each leg keeps its own record here, so check which city pair is on your booking before reading a rate.
One caution: this is a thin sample. 300 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.
| Also flown as | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| SBN to ATLthin sample | 300 | 68.3% | 109 min | 2.33% | C |
What to do with this
Booking OO 4033
For a booking, read OO 4033 as 75.1% on time with 2.00% cancelled over 300 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- ATL to SBN, every carrier and departure
- SBN to ATL, the return direction
- SkyWest Airlines 4109 on the same route59.4%
- Hartsfield-Jackson Atlanta International (ATL) 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.