Flight number record

OO 3480

SkyWest Airlines · Boise to Los Angeles

Route: BOI → LAX
Departs: 08:18
Flights: 325
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 3480, 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 3480 earns an A+. Nearly every flight arrives inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 18 points better than the national rate of 77.6%. When something does go wrong the average delay runs about an hour. That rests on 325 flights, with a median arrival 11 minutes early.

Set against the rest of the country, OO 3480's record is 18 points better than the US average of 77.6%. That gap is worth roughly 178 fewer late arrivals for every thousand flights.

On time

95.4%

Arrivals under 15 minutes late, of 325 completed flights

Avg delay

63 min

Across delayed arrivals only, not all flights

Cancelled

0.00%

National rate is 1.81%

1 hour+ late

1.8%

National rate is 8.1%

These figures cover 325 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 3480 flies

OO 3480 flies BOI to LAX without a single fixed slot. Its most common scheduled departure was 08:18, used on 50 of 325 flights, with 08:10 (45 flights) and 07:05 (36 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 08:1850 flights15.4%
Departs 08:1045 flights13.8%
Departs 07:0536 flights11.1%

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 08:18 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and OO 3480 runs 11 points better at 95.4%. 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 3480 next to BOI to LAX

Every carrier on BOI to LAX combined arrived on time 93.6% of the time across 1,372 flights, so OO 3480 is 2 points ahead of it. SkyWest flew 1,341 flights on the same city pair under all its flight numbers, including this one, and those ran 94.0% on time. Across its whole network SkyWest Airlines managed 79.0%, which this flight beats by 16 points.

OO 3480 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 3480thin sample	325	95.4%	63 min	0.00%	A+
All SkyWest Airlines on BOI–LAX	1,341	94.0%	74 min	0.07%	A+
All carriers on BOI–LAX	1,372	93.6%	78 min	0.22%	A+
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 3480 quarter by quarter

Quarter by quarter OO 3480 held fairly steady: 98.9% in Jul–Sep 2025, 98.5% in Oct–Dec 2025, 89.3% in Jan–Mar 2026 and 95.2% in Apr–Jun 2026. A spread of 10 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights98.9%
Oct–Dec 202566 flights98.5%
Jan–Mar 202684 flights89.3%
Apr–Jun 202683 flights95.2%

Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, OO 3480 ranged from 93.2% on Tuesday to 97.9% on Friday. With about 46 flights behind each day, a spread of 5 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why OO 3480 runs late

One category carries most of the weight here. Carrier accounts for 92% of the 951 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
92%
National Airspace System
7%
Extreme weather
1%

The largest share of delay minutes, 92%, 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 877 of the 951 delay minutes reported here. The split is drawn from 951 delay minutes reported on OO 3480.

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 1.8% 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 674 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.

Every one of the 325 flights under OO 3480 in the data flew BOI to LAX. 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. 325 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 3480

For a booking, OO 3480 has one of the better records a US domestic flight can show: 95.4% 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