Flight number record

OO 4671

SkyWest Airlines · San Francisco to Bakersfield

Route: SFO → BFL
Departs: 10:45
Flights: 331
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 2026, not live status. For today’s OO 4671, 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 4671 sits in the middle of the pack with a C+. About seven flights in ten arrive on time by the DOT's definition, 7 points worse than the national rate of 77.3%. The late ones land about an hour behind schedule. That rests on 331 flights, with a median arrival 2 minutes early.

The national on-time rate over the same period is 77.3%, so OO 4671 runs 7 points behind the country as a whole. Across a thousand flights that is about 69 extra late arrivals.

On time

70.4%

Arrivals under 15 minutes late, of 331 completed flights

Avg delay

61 min

Across delayed arrivals only, not all flights

Cancelled

0.00%

National rate is 1.89%

1 hour+ late

10.0%

National rate is 8.3%

These figures cover 331 flights between September 2025 and August 2026. Beyond the headline rate, 10.0% of arrivals land a full hour or more behind schedule, against 8.3% nationally.

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Schedule

When OO 4671 flies

OO 4671 flies SFO to BFL without a single fixed slot. Its most common scheduled departure was 10:45, used on 109 of 331 flights, with 10:25 (82 flights) next.

Departs 10:45109 flights32.9%
Departs 10:2582 flights24.8%

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 10:45 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and OO 4671 runs 14 points worse at 70.4%. 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 4671 next to SFO to BFL

Every carrier on SFO to BFL combined arrived on time 68.9% of the time across 583 flights, so OO 4671 is 2 points ahead of it. Across its whole network SkyWest Airlines managed 78.7%, which this flight trails by 8 points.

OO 4671 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 4671thin sample	331	70.4%	61 min	0.00%	C+
All SkyWest Airlines on SFO–BFL	583	68.9%	78 min	0.69%	C+
All carriers on SFO–BFL	583	68.9%	78 min	0.69%	C+
SkyWest Airlines, whole network	855,406	78.7%	88 min	1.79%	B

Across the year

OO 4671 quarter by quarter

OO 4671 did not run the same all year. Its best quarter was Oct–Dec 2025 at 77.0% on time and its weakest Apr–Jun 2026 at 63.7%, a swing of 13 points on roughly 66 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 flights76.7%
Oct–Dec 202561 flights77.0%
Jan–Mar 202690 flights72.2%
Apr–Jun 202691 flights63.7%
Jul–Sep 202659 flights67.8%

Scale runs 55% to 80%.

By weekday, OO 4671 did best on Wednesday at 83.3% on time and worst on Thursday at 64.6%. Each day rests on about 47 flights, so a gap of 19 points is worth noticing but could still narrow in another year.

Arrival by arrival

How late OO 4671 runs when it is late

The 98 late arrivals split 31 under half an hour, 34 between 30 and 60 minutes, and 33 an hour or more.

15+ min early56 flights16.9%
Within 15 min177 flights53.5%
15–29 min late31 flights9.4%
30–59 min late34 flights10.3%
1–2 hours late24 flights7.3%
2+ hours late9 flights2.7%

Scale runs 0% to 100%.

Share of 331 completed flights by arrival against schedule.

Time lost at the gate mostly stays lost. Of 93 departures that left 15 minutes late or more, only 7 made it up before arrival. 12 flights left on time and still arrived late.

The worst days

Worst days for OO 4671

The latest arrival of the period was on 30 August 2026, 6 hours 10 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on three of the five worst days.

The latest arrivals of OO 4671 in the period
Date	Arrived late by	Largest filed cause
30 August 2026	6 hours 10 minutes	Late-arriving aircraft
28 May 2026	5 hours 6 minutes	Late-arriving aircraft
31 August 2026	3 hours 22 minutes	Late-arriving aircraft
21 December 2025	3 hours 6 minutes	Carrier
27 July 2026	2 hours 55 minutes	Carrier

Delay causes

Why OO 4671 runs late

Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 5,951 reported delay minutes.

Late-arriving aircraft
38%
National Airspace System
29%
Carrier
19%
Extreme weather
13%

Extreme weather accounts for 13% 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 2.2 times the usual weather exposure. The split is drawn from 5,951 delay minutes reported on OO 4671.

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

10.0% 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 same number turns up on two other city pairs in the data, including ORD to CHA (31) and PDX to SFO (3), but none flew often enough under OO 4671 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to SFO to BFL only.

One caution: this is a thin sample. 331 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 4671

For a booking, read OO 4671 as 70.4% on time with 0.00% cancelled over 331 flights. Those are rates from the past twelve months, not a forecast for any particular day.

Where to go next

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 22 October 2026; recomputed monthly. How this data is collected.

Key figures