Flight number record

OO 3929

SkyWest Airlines · Los Angeles to Reno

Route: LAX → RNO
Departs: 20:45
Flights: 355
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 3929, 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 3929 earns an A+. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 11 points better than the national rate of 77.6%. When something does go wrong the average delay runs about an hour. That rests on 355 flights, with a median arrival 11 minutes early.

Set against the rest of the country, OO 3929's record is 11 points better than the US average of 77.6%. That gap is worth roughly 105 fewer late arrivals for every thousand flights.

On time

88.1%

Arrivals under 15 minutes late, of 354 completed flights

Avg delay

66 min

Across delayed arrivals only, not all flights

Cancelled

0.28%

National rate is 1.81%

1 hour+ late

3.1%

National rate is 8.1%

These figures cover 355 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 3929 flies

OO 3929 flies LAX to RNO without a single fixed slot. Its most common scheduled departure was 20:45, used on 91 of 355 flights, with 21:20 (53 flights) and 21:59 (49 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 20:4591 flights25.6%
Departs 21:2053 flights14.9%
Departs 21:5949 flights13.8%

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 20:45 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and OO 3929 runs 18 points better at 88.1%. 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 3929 next to LAX to RNO

Every carrier on LAX to RNO combined arrived on time 88.1% of the time across 2,494 flights, so OO 3929 is about level with it. SkyWest flew 2,037 flights on the same city pair under all its flight numbers, including this one, and those ran 90.8% on time. Across its whole network SkyWest Airlines managed 79.0%, which this flight beats by 9 points.

OO 3929 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 3929thin sample	355	88.1%	66 min	0.28%	A+
All SkyWest Airlines on LAX–RNO	2,037	90.8%	65 min	0.34%	A+
All carriers on LAX–RNO	2,494	88.1%	59 min	0.44%	A+
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 3929 quarter by quarter

Quarter by quarter OO 3929 held fairly steady: 85.6% in Jul–Sep 2025, 90.9% in Oct–Dec 2025, 89.7% in Jan–Mar 2026 and 86.5% in Apr–Jun 2026. A spread of 5 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202590 flights85.6%
Oct–Dec 202588 flights90.9%
Jan–Mar 202688 flights89.7%
Apr–Jun 202689 flights86.5%

Scale runs 75% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, OO 3929 ranged from 83.3% on Saturday to 94.3% on Tuesday. With about 51 flights behind each day, a spread of 11 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why OO 3929 runs late

One category carries most of the weight here. Carrier accounts for 87% of the 2,758 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
87%
Extreme weather
10%
National Airspace System
4%

The largest share of delay minutes, 87%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 2,394 of the 2,758 delay minutes reported here. The split is drawn from 2,758 delay minutes reported on OO 3929.

Cancellations are rare at 0.28%, 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 3.1% 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.

The same number turns up on two other city pairs in the data, including CLE to DTW (1) and DTW to CLE (1), but none flew often enough under OO 3929 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to LAX to RNO only.

One caution: this is a thin sample. 355 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 3929

For a booking, OO 3929 has one of the better records a US domestic flight can show: 88.1% on time and 0.28% 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