Flight number record
OO 4036
SkyWest Airlines · Redmond to Seattle
- Route
- RDM → SEA
- Departs
- 07:00
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 4036, 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 4036 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 11 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 365 flights, with a median arrival 16 minutes early.
Set against the rest of the country, OO 4036's record is 11 points better than the US average of 77.3%. That gap is worth roughly 113 fewer late arrivals for every thousand flights.
Key figures
On time
88.6%
Arrivals under 15 minutes late, of 360 completed flights
Avg delay
76 min
Across delayed arrivals only, not all flights
Cancelled
1.37%
National rate is 1.89%
1 hour+ late
5.0%
National rate is 8.3%
These figures cover 365 flights between September 2025 and August 2026. The median arrival is 16 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 4036 flies
OO 4036 flies RDM to SEA without a single fixed slot. Its most common scheduled departure was 07:00, used on 172 of 365 flights.
- Departs 07:00172 flights47.1%
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 07:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and OO 4036 runs level with that at 88.6%. 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 4036 next to RDM to SEA
Every carrier on RDM to SEA combined arrived on time 85.2% of the time across 1,867 flights, so OO 4036 is 3 points ahead of it. SkyWest flew 1,453 flights on the same city pair under all its flight numbers, including this one, and those ran 85.6% 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 4036 | 365 | 88.6% | 76 min | 1.37% | A |
| All SkyWest Airlines on RDM–SEA | 1,453 | 85.6% | 58 min | 1.79% | A |
| All carriers on RDM–SEA | 1,867 | 85.2% | 57 min | 1.71% | A |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 4036 quarter by quarter
OO 4036 did not run the same all year. Its best quarter was Jul–Sep 2026 at 98.4% on time and its weakest Jan–Mar 2026 at 82.4%, a swing of 16 points on roughly 73 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 flights90.0%
- Oct–Dec 202592 flights85.9%
- Jan–Mar 202690 flights82.4%
- Apr–Jun 202691 flights90.1%
- Jul–Sep 202662 flights98.4%
Scale runs 75% to 100%.
By weekday, OO 4036 ranged from 82.4% on Monday to 94.1% on Sunday. With about 52 flights behind each day, a spread of 12 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late OO 4036 runs when it is late
OO 4036 often beats the schedule: 193 of 360 completed flights, 54%, arrived 15 minutes or more early. The 41 late arrivals split 10 under half an hour, 13 between 30 and 60 minutes, and 18 an hour or more.
- 15+ min early193 flights53.6%
- Within 15 min126 flights35.0%
- 15–29 min late10 flights2.8%
- 30–59 min late13 flights3.6%
- 1–2 hours late11 flights3.1%
- 2+ hours late7 flights1.9%
Scale runs 0% to 100%.
Share of 360 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 29 departures that left 15 minutes late or more, only 3 made it up before arrival. 15 flights left on time and still arrived late.
The worst days
Worst days for OO 4036
The latest arrival of the period was on 20 January 2026, 4 hours 42 minutes behind schedule; most of its delay minutes were filed as extreme weather. On four of the five worst days the largest share was filed as carrier-caused (crew, maintenance, fuelling, baggage).
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 20 January 2026 | 4 hours 42 minutes | Extreme weather |
| 3 March 2026 | 3 hours 49 minutes | Carrier |
| 21 January 2026 | 3 hours 27 minutes | Carrier |
| 20 October 2025 | 3 hours 22 minutes | Carrier |
| 16 December 2025 | 2 hours 46 minutes | Carrier |
Delay causes
Why OO 4036 runs late
Carrier accounts for 67% of the 3,103 delay minutes carriers reported here, and the remaining four split what is left.
- 67%Carrier
- 25%Extreme weather
- 7%National Airspace System
- 1%Security
Extreme weather accounts for 25% 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 4.1 times the usual weather exposure. The split is drawn from 3,103 delay minutes reported on OO 4036.
Cancellations sit at 1.37% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
5.0% 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 a little over an hour, which a normal layover absorbs.
Every one of the 365 flights under OO 4036 in the data flew RDM to SEA. 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. 365 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 4036
For a booking, OO 4036 has one of the better records a US domestic flight can show: 88.6% on time and 1.37% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- RDM to SEA, every carrier and departure
- SEA to RDM, the return direction
- SkyWest Airlines 4141 on the same route88.0%
- SkyWest Airlines 3735 on the same route88.4%
- 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.