Flight number record
OO 4047
SkyWest Airlines · Seattle to Redmond
- Route
- SEA → RDM
- Departs
- 21:35
- Flights
- 347
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 4047, 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 4047 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 12 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 347 flights, with a median arrival 15 minutes early.
Set against the rest of the country, OO 4047's record is 12 points better than the US average of 77.3%. That gap is worth roughly 117 fewer late arrivals for every thousand flights.
Key figures
On time
89.0%
Arrivals under 15 minutes late, of 337 completed flights
Avg delay
70 min
Across delayed arrivals only, not all flights
Cancelled
2.02%
National rate is 1.89%
1 hour+ late
3.0%
National rate is 8.3%
These figures cover 347 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.
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Schedule
When OO 4047 flies
OO 4047 flies SEA to RDM without a single fixed slot. Its most common scheduled departure was 21:35, used on 181 of 347 flights, with 21:30 (57 flights) and 21:20 (43 flights) next.
- Departs 21:35181 flights52.2%
- Departs 21:3057 flights16.4%
- Departs 21:2043 flights12.4%
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 21:35 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and OO 4047 runs 19 points better at 89.0%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
OO 4047 next to SEA to RDM
Every carrier on SEA to RDM combined arrived on time 84.9% of the time across 1,865 flights, so OO 4047 is 4 points ahead of it. SkyWest flew 1,452 flights on the same city pair under all its flight numbers, including this one, and those ran 85.9% on time. Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 10 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 4047thin sample | 347 | 89.0% | 70 min | 2.02% | A |
| All SkyWest Airlines on SEA–RDM | 1,452 | 85.9% | 53 min | 1.72% | A |
| All carriers on SEA–RDM | 1,865 | 84.9% | 50 min | 1.66% | B |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 4047 quarter by quarter
OO 4047 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 79.0%, a swing of 21 points on roughly 69 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 202578 flights88.3%
- Jan–Mar 202686 flights90.9%
- Apr–Jun 202691 flights91.2%
- Jul–Sep 202662 flights79.0%
Scale runs 70% to 100%.
By weekday, OO 4047 did best on Saturday at 95.8% on time and worst on Thursday at 83.3%. Each day rests on about 50 flights, so a gap of 13 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 4047 runs when it is late
OO 4047 often beats the schedule: 175 of 337 completed flights, 52%, arrived 15 minutes or more early. Most of the lateness is short. 22 of the 37 late arrivals were under half an hour behind, and 10 reached an hour or more.
- 15+ min early175 flights51.9%
- Within 15 min125 flights37.1%
- 15–29 min late22 flights6.5%
- 30–59 min late5 flights1.5%
- 1–2 hours late7 flights2.1%
- 2+ hours late3 flights0.9%
Scale runs 0% to 100%.
Share of 337 completed flights by arrival against schedule.
A late pushback is often recovered here: of 49 departures that left 15 minutes late or more, 16 still arrived on time. Only 4 left on time and still arrived late.
The worst days
Worst days for OO 4047
The latest arrival of the period was on 2 March 2026, 11 hours 35 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 |
|---|---|---|
| 2 March 2026 | 11 hours 35 minutes | Carrier |
| 5 December 2025 | 7 hours 46 minutes | Extreme weather |
| 18 February 2026 | 2 hours 1 minute | Carrier |
| 7 August 2026 | 1 hour 57 minutes | Carrier |
| 30 March 2026 | 1 hour 46 minutes | Extreme weather |
Delay causes
Why OO 4047 runs late
Carrier accounts for 66% of the 2,572 delay minutes carriers reported here, and the remaining four split what is left.
- 66%Carrier
- 29%Extreme weather
- 5%National Airspace System
Extreme weather accounts for 29% 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 4.9 times the usual weather exposure. The split is drawn from 2,572 delay minutes reported on OO 4047.
Cancellations sit at 2.02% against a national 1.89%, which is ordinary. Diversions add another 0.86%.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 3.0% 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.
Every one of the 347 flights under OO 4047 in the data flew SEA to RDM. 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. 347 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 4047
For a booking, read OO 4047 as 89.0% on time with 2.02% cancelled over 347 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- SEA to RDM, every carrier and departure
- RDM to SEA, the return direction
- SkyWest Airlines 3735 on the same route87.7%
- SkyWest Airlines 4141 on the same route87.9%
- 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.