Flight number record

OO 3746

SkyWest Airlines · Los Angeles to San Diego

Route: LAX → SAN
Departs: 21:59
Flights: 362
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 3746, 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 3746 earns an A+. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 9 points better than the national rate of 77.6%. When something does go wrong the average delay runs roughly 55 minutes. That rests on 362 flights, with a median arrival 11 minutes early.

Set against the rest of the country, OO 3746's record is 9 points better than the US average of 77.6%. That gap is worth roughly 90 fewer late arrivals for every thousand flights.

On time

86.6%

Arrivals under 15 minutes late, of 359 completed flights

Avg delay

53 min

Across delayed arrivals only, not all flights

Cancelled

0.83%

National rate is 1.81%

1 hour+ late

2.2%

National rate is 8.1%

These figures cover 362 flights between July 2025 and June 2026. The median arrival is 11 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.

Schedule

When OO 3746 flies

OO 3746 flies LAX to SAN without a single fixed slot. Its most common scheduled departure was 21:59, used on 116 of 362 flights, with 22:20 (67 flights) and 21:55 (38 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 21:59116 flights32.0%
Departs 22:2067 flights18.5%
Departs 21:5538 flights10.5%

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 21:59 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and OO 3746 runs 16 points better at 86.6%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

OO 3746 next to LAX to SAN

Every carrier on LAX to SAN combined arrived on time 86.7% of the time across 2,441 flights, so OO 3746 is about level with it. SkyWest flew 2,253 flights on the same city pair under all its flight numbers, including this one, and those ran 86.5% on time. Across its whole network SkyWest Airlines managed 79.0%, which this flight beats by 8 points.

OO 3746 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 3746thin sample	362	86.6%	53 min	0.83%	A+
All SkyWest Airlines on LAX–SAN	2,253	86.5%	65 min	1.02%	A
All carriers on LAX–SAN	2,441	86.7%	64 min	0.94%	A+
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 3746 quarter by quarter

OO 3746 did not run the same all year. Its best quarter was Apr–Jun 2026 at 94.5% on time and its weakest Oct–Dec 2025 at 77.0%, a swing of 18 points on roughly 91 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 202592 flights91.2%
Oct–Dec 202589 flights77.0%
Jan–Mar 202690 flights83.3%
Apr–Jun 202691 flights94.5%

Scale runs 70% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, OO 3746 did best on Tuesday at 94.3% on time and worst on Sunday at 80.8%. Each day rests on about 52 flights, so a gap of 14 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 3746 runs late

One category carries most of the weight here. Carrier accounts for 44% of the 2,518 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.

Carrier
44%
Extreme weather
37%
National Airspace System
18%

Extreme weather accounts for 37% 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 6.0 times the usual weather exposure. The split is drawn from 2,518 delay minutes reported on OO 3746.

Cancellations are rare at 0.83%, below the national 1.81% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.

Connections and routes

What a delay on this flight costs

Badly late arrivals are rare here: only 2.2% land an hour or more behind schedule, against 8.1% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.

Every one of the 362 flights under OO 3746 in the data flew LAX to SAN. 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. 362 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 3746

For a booking, OO 3746 has one of the better records a US domestic flight can show: 86.6% on time and 0.83% cancelled. That is a base rate, not a promise about any single 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