Flight number record
OO 3487
SkyWest Airlines · Fresno to Portland
- Route
- FAT → PDX
- Departs
- 07:30
- Flights
- 316
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 3487, 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 3487 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 13 points better than the national rate of 77.3%. When something does go wrong the average delay runs a little over an hour. That rests on 316 flights, with a median arrival 11 minutes early.
Set against the rest of the country, OO 3487's record is 13 points better than the US average of 77.3%. That gap is worth roughly 134 fewer late arrivals for every thousand flights.
Key figures
On time
90.7%
Arrivals under 15 minutes late, of 312 completed flights
Avg delay
70 min
Across delayed arrivals only, not all flights
Cancelled
0.95%
National rate is 1.89%
1 hour+ late
4.2%
National rate is 8.3%
These figures cover 316 flights between September 2025 and August 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.
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Schedule
When OO 3487 flies
OO 3487 flies FAT to PDX without a single fixed slot. Its most common scheduled departure was 07:30, used on 69 of 316 flights, with 07:38 (37 flights) and 11:45 (35 flights) next.
- Departs 07:3069 flights21.8%
- Departs 07:3837 flights11.7%
- Departs 11:4535 flights11.1%
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 07:30 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and OO 3487 runs level with that at 90.7%. 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 3487 next to FAT to PDX
Every carrier on FAT to PDX combined arrived on time 90.2% of the time across 555 flights, so OO 3487 is about level with it. Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 12 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 3487thin sample | 316 | 90.7% | 70 min | 0.95% | A+ |
| All SkyWest Airlines on FAT–PDX | 555 | 90.2% | 91 min | 0.72% | A+ |
| All carriers on FAT–PDX | 555 | 90.2% | 91 min | 0.72% | A+ |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 3487 quarter by quarter
Quarter by quarter OO 3487 held fairly steady: 96.7% in Jul–Sep 2025, 90.2% in Oct–Dec 2025, 89.5% in Jan–Mar 2026, 95.2% in Apr–Jun 2026 and 87.1% in Jul–Sep 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 202530 flights96.7%
- Oct–Dec 202592 flights90.2%
- Jan–Mar 202690 flights89.5%
- Apr–Jun 202642 flights95.2%
- Jul–Sep 202662 flights87.1%
Scale runs 80% to 100%.
By weekday, OO 3487 ranged from 84.8% on Monday to 93.3% on Tuesday. With about 45 flights behind each day, a spread of 9 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late OO 3487 runs when it is late
OO 3487 often beats the schedule: 127 of 312 completed flights, 41%, arrived 15 minutes or more early. The 29 late arrivals split 10 under half an hour, 6 between 30 and 60 minutes, and 13 an hour or more.
- 15+ min early127 flights40.7%
- Within 15 min156 flights50.0%
- 15–29 min late10 flights3.2%
- 30–59 min late6 flights1.9%
- 1–2 hours late7 flights2.2%
- 2+ hours late6 flights1.9%
Scale runs 0% to 100%.
Share of 312 completed flights by arrival against schedule.
8 of 33 late departures made up the time and arrived on time, 24% of them. Only 4 left on time and still arrived late.
The worst days
Worst days for OO 3487
The latest arrival of the period was on 27 August 2026, 3 hours 30 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 27 August 2026 | 3 hours 30 minutes | Carrier |
| 22 September 2025 | 3 hours 8 minutes | Late-arriving aircraft |
| 17 July 2026 | 3 hours 8 minutes | Carrier |
| 28 July 2026 | 2 hours 27 minutes | National Airspace System |
| 21 December 2025 | 2 hours 16 minutes | Carrier |
Delay causes
Why OO 3487 runs late
Carrier accounts for 59% of the 2,026 delay minutes carriers reported here, and the remaining four split what is left.
- 59%Carrier
- 17%Extreme weather
- 15%National Airspace System
- 8%Late-arriving aircraft
Extreme weather accounts for 17% 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 2.9 times the usual weather exposure. The split is drawn from 2,026 delay minutes reported on OO 3487.
Cancellations sit at 0.95% against a national 1.89%, which is ordinary. Diversions add another 0.32%.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 4.2% 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 626 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 one other city pair in the data, including RDM to BUR (1), but none flew often enough under OO 3487 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to FAT to PDX only.
One caution: this is a thin sample. 316 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 3487
For a booking, OO 3487 has one of the better records a US domestic flight can show: 90.7% on time and 0.95% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- Portland International (PDX) 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.