Flight number record

OO 6393

SkyWest Airlines · Tucson to Los Angeles

Route: TUS → LAX
Departs: 06:00
Flights: 299
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 6393, 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 6393 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 a little over an hour. That rests on 299 flights, with a median arrival 7 minutes early.

Set against the rest of the country, OO 6393's record is 11 points better than the US average of 77.6%. That gap is worth roughly 107 fewer late arrivals for every thousand flights.

On time

88.3%

Arrivals under 15 minutes late, of 299 completed flights

Avg delay

71 min

Across delayed arrivals only, not all flights

Cancelled

0.00%

National rate is 1.81%

1 hour+ late

4.3%

National rate is 8.1%

These figures cover 299 flights between July 2025 and June 2026. The median arrival is 7 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 6393 flies

OO 6393 flies TUS to LAX without a single fixed slot. Its most common scheduled departure was 06:00, used on 40 of 299 flights, with 07:02 (33 flights) and 07:15 (32 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 06:0040 flights13.4%
Departs 07:0233 flights11.0%
Departs 07:1532 flights10.7%

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 06:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and OO 6393 runs level with that at 88.3%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

OO 6393 next to TUS to LAX

Every carrier on TUS to LAX combined arrived on time 85.9% of the time across 2,581 flights, so OO 6393 is 2 points ahead of it. SkyWest flew 2,115 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 9 points.

OO 6393 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 6393thin sample	299	88.3%	71 min	0.00%	A+
All SkyWest Airlines on TUS–LAX	2,115	86.5%	85 min	0.43%	A+
All carriers on TUS–LAX	2,581	85.9%	77 min	0.43%	A+
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 6393 quarter by quarter

OO 6393 did not run the same all year. Its best quarter was Apr–Jun 2026 at 96.5% on time and its weakest Jan–Mar 2026 at 74.2%, a swing of 22 points on roughly 75 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 flights90.2%
Oct–Dec 202556 flights89.3%
Jan–Mar 202666 flights74.2%
Apr–Jun 202685 flights96.5%

Scale runs 65% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, OO 6393 did best on Monday at 97.6% on time and worst on Friday at 81.8%. Each day rests on about 43 flights, so a gap of 16 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 6393 runs late

One category carries most of the weight here. Carrier accounts for 60% of the 2,489 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
60%
Late-arriving aircraft
37%
Extreme weather
1%
National Airspace System
1%

37% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 2,489 reported delay minutes here, that single category outweighs weather by 25 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 2,489 delay minutes reported on OO 6393.

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

Badly late arrivals are rare here: only 4.3% 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 four other city pairs in the data, including PHX to EGE (22), EGE to PHX (22) and OKC to PHX (4), but none flew often enough under OO 6393 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to TUS to LAX only.

One caution: this is a thin sample. 299 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 6393

For a booking, OO 6393 has one of the better records a US domestic flight can show: 88.3% on time and 0.00% 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