Flight number record

OO 4729

SkyWest Airlines · Monterey to San Francisco

Route: MRY → SFO
Departs: 14:30
Flights: 263
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 4729, 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 4729 draws a C. About one flight in three arrives at least 15 minutes late, and the typical late arrival is roughly 45 minutes behind schedule. Build slack into anything you connect to. That rests on 263 flights, with a median arrival 2 minutes late.

The national on-time rate over the same period is 77.6%, so OO 4729 runs 13 points behind the country as a whole. Across a thousand flights that is about 126 extra late arrivals.

On time

65.0%

Arrivals under 15 minutes late, of 260 completed flights

Avg delay

47 min

Across delayed arrivals only, not all flights

Cancelled

1.14%

National rate is 1.81%

1 hour+ late

6.9%

National rate is 8.1%

These figures cover 263 flights between July 2025 and June 2026. On-time means an arrival less than 15 minutes after the scheduled gate time, the same threshold the Department of Transportation uses in its own reports. Cancelled and diverted flights are excluded from the on-time rate and counted separately, which is why the cancellation column matters on its own.

Schedule

When OO 4729 flies

OO 4729 flies MRY to SFO without a single fixed slot. Its most common scheduled departure was 14:30, used on 55 of 263 flights, with 14:14 (48 flights) and 15:30 (35 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 14:3055 flights20.9%
Departs 14:1448 flights18.3%
Departs 15:3035 flights13.3%

Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.

Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.

A 14:30 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and OO 4729 runs 7 points worse at 65.0%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

OO 4729 next to MRY to SFO

Every carrier on MRY to SFO combined arrived on time 68.5% of the time across 709 flights, so OO 4729 is 4 points behind it. Across its whole network SkyWest Airlines managed 79.0%, which this flight trails by 14 points.

OO 4729 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 4729thin sample	263	65.0%	47 min	1.14%	C
All SkyWest Airlines on MRY–SFO	709	68.5%	61 min	0.56%	C+
All carriers on MRY–SFO	709	68.5%	61 min	0.56%	C+
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 4729 quarter by quarter

OO 4729 did not run the same all year. Its best quarter was Jul–Sep 2025 at 86.1% on time and its weakest Apr–Jun 2026 at 38.6%, a swing of 47 points on roughly 88 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 202579 flights86.1%
Oct–Dec 202591 flights71.1%
Jan–Mar 20268 flights—
Apr–Jun 202685 flights38.6%

Scale runs 30% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, OO 4729 did best on Sunday at 75.8% on time and worst on Friday at 56.4%. Each day rests on about 38 flights, so a gap of 19 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 4729 runs late

One category carries most of the weight here. National Airspace System accounts for 51% of the 4,256 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

National Airspace System
51%
Late-arriving aircraft
26%
Carrier
22%
Extreme weather
2%

51% 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 2,155 minutes out of 4,256, against a national NAS share of 21%. The split is drawn from 4,256 delay minutes reported on OO 4729.

Cancellations sit at 1.14% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and routes

What a delay on this flight costs

6.9% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last roughly 45 minutes, which a normal layover absorbs.

The same number turns up on eight other city pairs in the data, including BUF to ORD (30), IAH to LIT (24) and CID to ORD (21), but none flew often enough under OO 4729 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to MRY to SFO only.

One caution: this is a thin sample. 263 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 4729

For a booking, read OO 4729 as 65.0% on time with 1.14% cancelled over 263 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures