Flight number record
OO 3972
SkyWest Airlines · Pasco to Seattle
- Route
- PSC → SEA
- Departs
- 05:25
- Flights
- 255
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 3972, 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 3972 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 16 points better than the national rate of 77.3%. When something does go wrong the average delay runs about 3.2 hours. That rests on 255 flights, with a median arrival 15 minutes early.
Set against the rest of the country, OO 3972's record is 16 points better than the US average of 77.3%. That gap is worth roughly 156 fewer late arrivals for every thousand flights.
Key figures
On time
92.9%
Arrivals under 15 minutes late, of 255 completed flights
Avg delay
194 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
1 hour+ late
5.1%
National rate is 8.3%
These figures cover 255 flights between September 2025 and August 2026. The median arrival is 15 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.
Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Schedule
When OO 3972 flies
OO 3972 flies PSC to SEA without a single fixed slot. Its most common scheduled departure was 05:25, used on 93 of 255 flights, with 05:05 (62 flights) and 06:20 (31 flights) next.
- Departs 05:2593 flights36.5%
- Departs 05:0562 flights24.3%
- Departs 06:2031 flights12.2%
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 05:25 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and OO 3972 runs 4 points better at 92.9%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Against the route
OO 3972 next to PSC to SEA
Every carrier on PSC to SEA combined arrived on time 88.6% of the time across 1,679 flights, so OO 3972 is 4 points ahead of it. SkyWest flew 1,465 flights on the same city pair under all its flight numbers, including this one, and those ran 89.0% on time. Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 14 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 3972thin sample | 255 | 92.9% | 194 min | 0.00% | A+ |
| All SkyWest Airlines on PSC–SEA | 1,465 | 89.0% | 88 min | 0.75% | A+ |
| All carriers on PSC–SEA | 1,679 | 88.6% | 89 min | 0.77% | A+ |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 3972 quarter by quarter
Quarter by quarter OO 3972 held fairly steady: 91.1% in Jan–Mar 2026, 93.4% in Apr–Jun 2026 and 95.2% in Jul–Sep 2026. A spread of 4 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 flights91.1%
- Apr–Jun 202691 flights93.4%
- Jul–Sep 202662 flights95.2%
Scale runs 85% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, OO 3972 ranged from 86.5% on Monday to 97.3% on Saturday. With about 36 flights behind each day, a spread of 11 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late OO 3972 runs when it is late
OO 3972 often beats the schedule: 130 of 255 completed flights, 51%, arrived 15 minutes or more early. When OO 3972 is late it tends to be very late: 13 of its 18 late arrivals were an hour or more behind, and 9 were two hours or more.
- 15+ min early130 flights51.0%
- Within 15 min107 flights42.0%
- 15–29 min late3 flights1.2%
- 30–59 min late2 flights0.8%
- 1–2 hours late4 flights1.6%
- 2+ hours late9 flights3.5%
Scale runs 0% to 100%.
Share of 255 completed flights by arrival against schedule.
Only 17 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 3972
The latest arrival of the period was on 15 January 2026, 10 hours 53 minutes behind schedule; most of its delay minutes were filed as extreme weather. Three of the five worst days fell in February 2026.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 15 January 2026 | 10 hours 53 minutes | Extreme weather |
| 13 February 2026 | 8 hours 37 minutes | Extreme weather |
| 1 February 2026 | 6 hours 43 minutes | Carrier |
| 17 February 2026 | 6 hours 10 minutes | Carrier |
| 16 March 2026 | 5 hours 1 minute | Carrier |
Delay causes
Why OO 3972 runs late
Carrier accounts for 58% of the 3,489 delay minutes carriers reported here, and the remaining four split what is left.
- 58%Carrier
- 39%Extreme weather
- 3%National Airspace System
Extreme weather accounts for 39% 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 6.4 times the usual weather exposure. The split is drawn from 3,489 delay minutes reported on OO 3972.
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
5.1% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about 3.2 hours, which a normal layover absorbs.
The same number turns up on one other city pair in the data, including DLH to MSP (65), but none flew often enough under OO 3972 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to PSC to SEA 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 3972
For a booking, OO 3972 has one of the better records a US domestic flight can show: 92.9% on time and 0.00% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- PSC to SEA, every carrier and departure
- SEA to PSC, the return direction
- Seattle-Tacoma International (SEA) 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.