Flight number record
OO 5951
SkyWest Airlines · San Luis Obispo to San Francisco
- Route
- SBP → SFO
- Departs
- 14:21
- Flights
- 259
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 5951, 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 5951 draws a C+. About one flight in three arrives at least 15 minutes late, and the typical late arrival is about an hour behind schedule. Build slack into anything you connect to. That rests on 259 flights, with a median arrival right on schedule.
The national on-time rate over the same period is 77.3%, so OO 5951 runs 12 points behind the country as a whole. Across a thousand flights that is about 117 extra late arrivals.
Key figures
On time
65.6%
Arrivals under 15 minutes late, of 259 completed flights
Avg delay
60 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
1 hour+ late
10.4%
National rate is 8.3%
These figures cover 259 flights between September 2025 and August 2026. Beyond the headline rate, 10.4% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When OO 5951 flies
OO 5951 flies SBP to SFO without a single fixed slot. Its most common scheduled departure was 14:21, used on 55 of 259 flights, with 14:19 (52 flights) and 14:15 (41 flights) next.
- Departs 14:2155 flights21.2%
- Departs 14:1952 flights20.1%
- Departs 14:1541 flights15.8%
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 14:21 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and OO 5951 runs 6 points worse at 65.6%. 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 5951 next to SBP to SFO
Every carrier on SBP to SFO combined arrived on time 56.4% of the time across 1,139 flights, so OO 5951 is 9 points ahead of it. SkyWest flew 836 flights on the same city pair under all its flight numbers, including this one, and those ran 58.2% on time. Across its whole network SkyWest Airlines managed 78.7%, which this flight trails by 13 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 5951thin sample | 259 | 65.6% | 60 min | 0.00% | C+ |
| All SkyWest Airlines on SBP–SFO | 836 | 58.2% | 70 min | 1.32% | D |
| All carriers on SBP–SFO | 1,139 | 56.4% | 73 min | 1.23% | D |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 5951 quarter by quarter
OO 5951 did not run the same all year. Its best quarter was Oct–Dec 2025 at 73.9% on time and its weakest Apr–Jun 2026 at 42.0%, a swing of 32 points on roughly 86 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 202527 flights—
- Oct–Dec 202592 flights73.9%
- Jan–Mar 202690 flights65.6%
- Apr–Jun 202650 flights42.0%
Scale runs 35% to 80%. Rows with fewer than 30 flights show a dash.
By weekday, OO 5951 did best on Tuesday at 75.7% on time and worst on Wednesday at 54.1%. Each day rests on about 37 flights, so a gap of 22 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 5951 runs when it is late
OO 5951 often beats the schedule: 66 of 259 completed flights, 25%, arrived 15 minutes or more early. The 89 late arrivals split 29 under half an hour, 33 between 30 and 60 minutes, and 27 an hour or more.
- 15+ min early66 flights25.5%
- Within 15 min104 flights40.2%
- 15–29 min late29 flights11.2%
- 30–59 min late33 flights12.7%
- 1–2 hours late20 flights7.7%
- 2+ hours late7 flights2.7%
Scale runs 0% to 100%.
Share of 259 completed flights by arrival against schedule.
13 of 67 late departures made up the time and arrived on time, 19% of them. In the other direction, 35 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 SFO.
The worst days
Worst days for OO 5951
The latest arrival of the period was on 27 February 2026, 10 hours behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). On three of the five worst days the largest share was filed as national airspace system delay.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 27 February 2026 | 10 hours | Carrier |
| 20 April 2026 | 4 hours 11 minutes | National Airspace System |
| 19 December 2025 | 3 hours 33 minutes | National Airspace System |
| 28 February 2026 | 3 hours 16 minutes | Carrier |
| 3 January 2026 | 2 hours 26 minutes | National Airspace System |
Delay causes
Why OO 5951 runs late
Carrier accounts for 45% of the 5,360 delay minutes carriers reported here, and the remaining four split what is left.
- 45%Carrier
- 44%National Airspace System
- 9%Late-arriving aircraft
- 3%Extreme weather
44% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 2,360 minutes out of 5,360, against a national NAS share of 21%. The split is drawn from 5,360 delay minutes reported on OO 5951.
Cancellations are rare at 0.00%, below the national 1.89% and low enough to earn the plus on the grade. Almost no flights are called off; the risk here is arriving late, not not arriving.
Connections and routes
What a delay on this flight costs
10.4% 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 SFO to MSP (14), but none flew often enough under OO 5951 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to SBP to SFO only.
One caution: this is a thin sample. 259 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 5951
For a booking, read OO 5951 as 65.6% on time with 0.00% cancelled over 259 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- SBP to SFO, every carrier and departure
- SFO to SBP, the return direction
- San Francisco International (SFO) 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.