Flight number record
OO 3480
SkyWest Airlines · Boise to Los Angeles
- Route
- BOI → LAX
- Departs
- 08:03
- Flights
- 311
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 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 16 points better than the national rate of 77.3%. When something does go wrong the average delay runs roughly 55 minutes. That rests on 311 flights, with a median arrival 8 minutes early.
Set against the rest of the country, OO 3480's record is 16 points better than the US average of 77.3%. That gap is worth roughly 163 fewer late arrivals for every thousand flights.
Key figures
On time
93.6%
Arrivals under 15 minutes late, of 311 completed flights
Avg delay
53 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
1 hour+ late
1.9%
National rate is 8.3%
These figures cover 311 flights between September 2025 and August 2026. The median arrival is 8 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.
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Schedule
When OO 3480 flies
OO 3480 flies BOI to LAX without a single fixed slot. Its most common scheduled departure was 08:03, used on 68 of 311 flights, with 07:05 (36 flights) and 08:07 (35 flights) next.
- Departs 08:0368 flights21.9%
- Departs 07:0536 flights11.6%
- Departs 08:0735 flights11.3%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 08:03 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and OO 3480 runs 10 points better at 93.6%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
OO 3480 next to BOI to LAX
Every carrier on BOI to LAX combined arrived on time 92.7% of the time across 1,353 flights, so OO 3480 is about level with it. SkyWest flew 1,322 flights on the same city pair under all its flight numbers, including this one, and those ran 93.1% on time. Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 15 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 3480thin sample | 311 | 93.6% | 53 min | 0.00% | A+ |
| All SkyWest Airlines on BOI–LAX | 1,322 | 93.1% | 68 min | 0.08% | A+ |
| All carriers on BOI–LAX | 1,353 | 92.7% | 72 min | 0.22% | A+ |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 3480 quarter by quarter
OO 3480 did not run the same all year. Its best quarter was Jul–Sep 2025 at 100.0% on time and its weakest Jul–Sep 2026 at 87.5%, a swing of 13 points on roughly 62 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 202530 flights100.0%
- Oct–Dec 202566 flights98.5%
- Jan–Mar 202684 flights89.3%
- Apr–Jun 202683 flights95.2%
- Jul–Sep 202648 flights87.5%
Scale runs 80% to 100%.
By weekday, OO 3480 ranged from 92.7% on Tuesday to 95.6% on Friday. With about 44 flights behind each day, a spread of 3 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late OO 3480 runs when it is late
OO 3480 often beats the schedule: 100 of 311 completed flights, 32%, arrived 15 minutes or more early. The 20 late arrivals split 7 under half an hour, 7 between 30 and 60 minutes, and 6 an hour or more.
- 15+ min early100 flights32.2%
- Within 15 min191 flights61.4%
- 15–29 min late7 flights2.3%
- 30–59 min late7 flights2.3%
- 1–2 hours late4 flights1.3%
- 2+ hours late2 flights0.6%
Scale runs 0% to 100%.
Share of 311 completed flights by arrival against schedule.
Only 11 of 311 completed flights left 15 minutes late or more, too few to say how often the time is made up.
The worst days
Worst days for OO 3480
The latest arrival of the period was on 10 January 2026, 2 hours 51 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on five of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 10 January 2026 | 2 hours 51 minutes | Carrier |
| 11 March 2026 | 2 hours 27 minutes | Carrier |
| 21 January 2026 | 1 hour 28 minutes | Carrier |
| 4 March 2026 | 1 hour 17 minutes | Carrier |
| 9 August 2026 | 1 hour 8 minutes | Carrier |
Delay causes
Why OO 3480 runs late
Carrier accounts for 90% of the 1,052 delay minutes carriers reported here, and the remaining four split what is left.
- 90%Carrier
- 10%National Airspace System
- 1%Extreme weather
The largest share of delay minutes, 90%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 946 of the 1,052 delay minutes reported here. The split is drawn from 1,052 delay minutes reported on OO 3480.
Cancellations are rare at 0.00%, below the national 1.89% 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 1.9% land an hour or more behind schedule, against 8.3% 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.
Every one of the 311 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. 311 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: 93.6% on time and 0.00% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- BOI to LAX, every carrier and departure
- LAX to BOI, the return direction
- SkyWest Airlines 3725 on the same route95.3%
- Los Angeles International (LAX) delay statistics
- SkyWest Airlines on-time record
- Every SkyWest Airlines flight number with a record
- The most and least reliable flight numbers in the US
- The best time of day to fly, according to 7.05 million flight records
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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.