Flight number record
OO 4107
SkyWest Airlines · South Bend to Atlanta
- Route
- SBN → ATL
- Departs
- 06:00
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 4107, 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 4107 lands a B, 5 points better than the national rate of 77.3%. About one flight in six arrives 15 minutes late or worse, and those flights are late by about 2.2 hours on average. That rests on 365 flights, with a median arrival 10 minutes early.
Set against the rest of the country, OO 4107's record is 5 points better than the US average of 77.3%. That gap is worth roughly 50 fewer late arrivals for every thousand flights.
Key figures
On time
82.3%
Arrivals under 15 minutes late, of 356 completed flights
Avg delay
134 min
Across delayed arrivals only, not all flights
Cancelled
1.92%
National rate is 1.89%
1 hour+ late
9.0%
National rate is 8.3%
These figures cover 365 flights between September 2025 and August 2026. Beyond the headline rate, 9.0% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When OO 4107 flies
OO 4107 is scheduled to leave South Bend (SBN) at 06:00 local time and reach Atlanta (ATL) at 07:58. That slot held for 294 of the 365 scheduled departures in the data, so the figures below describe one steady operation rather than a number that moved around the clock.
- Departs 06:00294 flights80.5%
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 06:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and OO 4107 runs 7 points worse at 82.3%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
OO 4107 next to SBN to ATL
Every carrier on SBN to ATL combined arrived on time 76.5% of the time across 1,030 flights, so OO 4107 is 6 points ahead of it. SkyWest flew 1,029 flights on the same city pair under all its flight numbers, including this one, and those ran 76.5% on time. Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 4 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 4107 | 365 | 82.3% | 134 min | 1.92% | B |
| All SkyWest Airlines on SBN–ATL | 1,029 | 76.5% | 122 min | 2.24% | B |
| All carriers on SBN–ATL | 1,030 | 76.5% | 122 min | 2.23% | B |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 4107 quarter by quarter
OO 4107 did not run the same all year. Its best quarter was Jul–Sep 2025 at 93.3% on time and its weakest Jan–Mar 2026 at 72.9%, a swing of 20 points on roughly 73 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 202592 flights81.1%
- Jan–Mar 202690 flights72.9%
- Apr–Jun 202691 flights88.8%
- Jul–Sep 202662 flights82.3%
Scale runs 65% to 100%.
By weekday, OO 4107 did best on Wednesday at 92.3% on time and worst on Tuesday at 70.6%. Each day rests on about 52 flights, so a gap of 22 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 4107 runs when it is late
OO 4107 often beats the schedule: 131 of 356 completed flights, 37%, arrived 15 minutes or more early. When OO 4107 is late it tends to be very late: 32 of its 63 late arrivals were an hour or more behind, and 18 were two hours or more.
- 15+ min early131 flights36.8%
- Within 15 min162 flights45.5%
- 15–29 min late17 flights4.8%
- 30–59 min late14 flights3.9%
- 1–2 hours late14 flights3.9%
- 2+ hours late18 flights5.1%
Scale runs 0% to 100%.
Share of 356 completed flights by arrival against schedule.
9 of 53 late departures made up the time and arrived on time, 17% of them. In the other direction, 19 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 ATL.
The worst days
Worst days for OO 4107
The latest arrival of the period was on 19 June 2026, 14 hours 5 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 |
|---|---|---|
| 19 June 2026 | 14 hours 5 minutes | Carrier |
| 6 May 2026 | 13 hours 5 minutes | Extreme weather |
| 15 July 2026 | 11 hours 28 minutes | Carrier |
| 5 May 2026 | 7 hours 16 minutes | Carrier |
| 6 March 2026 | 6 hours 57 minutes | Extreme weather |
Delay causes
Why OO 4107 runs late
Carrier accounts for 68% of the 8,464 delay minutes carriers reported here, and the remaining four split what is left.
- 68%Carrier
- 21%Extreme weather
- 11%National Airspace System
- 0%Security
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 8,464 delay minutes reported on OO 4107.
Cancellations sit at 1.92% against a national 1.89%, which is ordinary. Diversions add another 0.55%.
Connections and routes
What a delay on this flight costs
9.0% 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.
Every one of the 365 flights under OO 4107 in the data flew SBN to ATL. The number was not reused on any other city pair, which makes this a clean record of one route.
One caution: this is a thin sample. 365 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 4107
For a booking, read OO 4107 as 82.3% on time with 1.92% cancelled over 365 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- SBN to ATL, every carrier and departure
- ATL to SBN, the return direction
- SkyWest Airlines 4033 on the same route68.3%
- 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.