Flight number record
OO 3725
SkyWest Airlines · Boise to Los Angeles
- Route
- BOI → LAX
- Departs
- 07:00
- Flights
- 255
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 3725, 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 3725 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 77.3%. When something does go wrong the average delay runs about an hour. That rests on 255 flights, with a median arrival 13 minutes early.
Set against the rest of the country, OO 3725's record is 18 points better than the US average of 77.3%. That gap is worth roughly 180 fewer late arrivals for every thousand flights.
Key figures
On time
95.3%
Arrivals under 15 minutes late, of 255 completed flights
Avg delay
61 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
1 hour+ late
0.8%
National rate is 8.3%
These figures cover 255 flights between September 2025 and August 2026. The median arrival is 13 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 3725 flies
OO 3725 flies BOI to LAX without a single fixed slot. Its most common scheduled departure was 07:00, used on 102 of 255 flights, with 07:05 (99 flights) and 07:25 (38 flights) next.
- Departs 07:00102 flights40.0%
- Departs 07:0599 flights38.8%
- Departs 07:2538 flights14.9%
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 07:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and OO 3725 runs 6 points better at 95.3%. 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 3725 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 3725 is 3 points ahead of 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 17 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 3725thin sample | 255 | 95.3% | 61 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 3725 quarter by quarter
Quarter by quarter OO 3725 held fairly steady: 94.4% in Jan–Mar 2026, 95.6% in Apr–Jun 2026 and 96.8% in Jul–Sep 2026. A spread of 2 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Oct–Dec 202512 flights—
- Jan–Mar 202690 flights94.4%
- Apr–Jun 202691 flights95.6%
- Jul–Sep 202662 flights96.8%
Scale runs 85% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, OO 3725 ranged from 91.9% on Sunday to 100.0% on Monday. With about 36 flights behind each day, a spread of 8 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late OO 3725 runs when it is late
OO 3725 often beats the schedule: 115 of 255 completed flights, 45%, arrived 15 minutes or more early. Most of the lateness is short. 9 of the 12 late arrivals were under half an hour behind, and 2 reached an hour or more.
- 15+ min early115 flights45.1%
- Within 15 min128 flights50.2%
- 15–29 min late9 flights3.5%
- 30–59 min late1 flights0.4%
- 1–2 hours late0 flights0.0%
- 2+ hours late2 flights0.8%
Scale runs 0% to 100%.
Share of 255 completed flights by arrival against schedule.
Only 12 of 255 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 3725
The latest arrival of the period was on 15 March 2026, 4 hours 47 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 15 March 2026 | 4 hours 47 minutes | Carrier |
| 5 April 2026 | 3 hours 58 minutes | Carrier |
| 15 January 2026 | 46 minutes | Extreme weather |
| 17 July 2026 | 23 minutes | Carrier |
| 28 January 2026 | 22 minutes | Carrier |
Delay causes
Why OO 3725 runs late
Carrier accounts for 93% of the 732 delay minutes carriers reported here, and the remaining four split what is left.
- 93%Carrier
- 4%Extreme weather
- 3%National Airspace System
The largest share of delay minutes, 93%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 678 of the 732 delay minutes reported here. The split is drawn from 732 delay minutes reported on OO 3725.
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 0.8% 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.
The same number turns up on four other city pairs in the data, including SLC to BOI (70), BOI to SLC (69) and DTW to MKE (1), but none flew often enough under OO 3725 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to BOI to LAX only.
One caution: this is a thin sample. 255 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 3725
For a booking, OO 3725 has one of the better records a US domestic flight can show: 95.3% 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 3480 on the same route93.6%
- 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
- Worst months to fly in the US, ranked by the data
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.