Flight number record

OO 3846

SkyWest Airlines · Los Angeles to Tucson

Route: LAX → TUS
Departs: 19:00
Flights: 280
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 3846, 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 3846 lands a B+, 5 points better than the national rate of 77.6%. About one flight in six arrives 15 minutes late or worse, and those flights are late by about an hour on average. That is a workable record, not a spotless one. That rests on 280 flights, with a median arrival 9 minutes early.

Set against the rest of the country, OO 3846's record is 5 points better than the US average of 77.6%. That gap is worth roughly 45 fewer late arrivals for every thousand flights.

On time

82.1%

Arrivals under 15 minutes late, of 280 completed flights

Avg delay

64 min

Across delayed arrivals only, not all flights

Cancelled

0.00%

National rate is 1.81%

1 hour+ late

7.5%

National rate is 8.1%

These figures cover 280 flights between July 2025 and June 2026. The median arrival is 9 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 3846 flies

OO 3846 flies LAX to TUS without a single fixed slot. Its most common scheduled departure was 19:00, used on 107 of 280 flights, with 19:35 (36 flights) and 19:25 (36 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 19:00107 flights38.2%
Departs 19:3536 flights12.9%
Departs 19:2536 flights12.9%

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 19:00 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.2%, and OO 3846 runs 14 points better at 82.1%. 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 3846 next to LAX to TUS

Every carrier on LAX to TUS combined arrived on time 80.4% of the time across 2,580 flights, so OO 3846 is 2 points ahead of it. SkyWest flew 2,114 flights on the same city pair under all its flight numbers, including this one, and those ran 83.1% on time. Across its whole network SkyWest Airlines managed 79.0%, which this flight beats by 3 points.

OO 3846 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 3846thin sample	280	82.1%	64 min	0.00%	B+
All SkyWest Airlines on LAX–TUS	2,114	83.1%	84 min	0.43%	B+
All carriers on LAX–TUS	2,580	80.4%	73 min	0.39%	B+
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 3846 quarter by quarter

Quarter by quarter OO 3846 held fairly steady: 77.1% in Jul–Sep 2025, 80.9% in Oct–Dec 2025, 84.3% in Jan–Mar 2026 and 85.7% in Apr–Jun 2026. A spread of 9 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202570 flights77.1%
Oct–Dec 202568 flights80.9%
Jan–Mar 202651 flights84.3%
Apr–Jun 202691 flights85.7%

Scale runs 70% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, OO 3846 did best on Tuesday at 95.3% on time and worst on Sunday at 75.0%. Each day rests on about 40 flights, so a gap of 20 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 3846 runs late

One category carries most of the weight here. Carrier accounts for 76% of the 3,192 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
76%
Extreme weather
20%
National Airspace System
4%

Extreme weather accounts for 20% 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 3.2 times the usual weather exposure. The split is drawn from 3,192 delay minutes reported on OO 3846.

Cancellations are rare at 0.00%, below the national 1.81% 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

7.5% 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 about an hour, which a normal layover absorbs.

The same number turns up on three other city pairs in the data, including MCI to MSP (19), MSP to MCI (19) and SLC to BOI (8), but none flew often enough under OO 3846 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to LAX to TUS only.

One caution: this is a thin sample. 280 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 3846

For a booking, read OO 3846 as 82.1% on time with 0.00% cancelled over 280 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