Flight number record
OO 3735
SkyWest Airlines · Seattle to Redmond
- Route
- SEA → RDM
- Departs
- 09:25
- Flights
- 349
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 3735, 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 3735 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 10 points better than the national rate of 77.3%. When something does go wrong the average delay runs roughly 55 minutes. That rests on 349 flights, with a median arrival 10 minutes early.
Set against the rest of the country, OO 3735's record is 10 points better than the US average of 77.3%. That gap is worth roughly 104 fewer late arrivals for every thousand flights.
Key figures
On time
87.7%
Arrivals under 15 minutes late, of 341 completed flights
Avg delay
54 min
Across delayed arrivals only, not all flights
Cancelled
2.29%
National rate is 1.89%
1 hour+ late
2.6%
National rate is 8.3%
These figures cover 349 flights between September 2025 and August 2026. The median arrival is 10 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 3735 flies
OO 3735 flies SEA to RDM without a single fixed slot. Its most common scheduled departure was 09:25, used on 134 of 349 flights, with 09:40 (38 flights) next.
- Departs 09:25134 flights38.4%
- Departs 09:4038 flights10.9%
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 09:25 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and OO 3735 runs 4 points better at 87.7%. 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 3735 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 3735 is 3 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 9 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 3735thin sample | 349 | 87.7% | 54 min | 2.29% | 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 3735 quarter by quarter
OO 3735 did not run the same all year. Its best quarter was Jul–Sep 2025 at 96.7% on time and its weakest Jan–Mar 2026 at 82.1%, a swing of 15 points on roughly 70 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 flights96.7%
- Oct–Dec 202580 flights86.5%
- Jan–Mar 202686 flights82.1%
- Apr–Jun 202691 flights92.3%
- Jul–Sep 202662 flights85.5%
Scale runs 75% to 100%.
By weekday, OO 3735 ranged from 83.3% on Thursday to 91.8% on Wednesday. With about 50 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 3735 runs when it is late
OO 3735 often beats the schedule: 125 of 341 completed flights, 37%, arrived 15 minutes or more early. The 42 late arrivals split 17 under half an hour, 16 between 30 and 60 minutes, and 9 an hour or more.
- 15+ min early125 flights36.7%
- Within 15 min174 flights51.0%
- 15–29 min late17 flights5.0%
- 30–59 min late16 flights4.7%
- 1–2 hours late4 flights1.2%
- 2+ hours late5 flights1.5%
Scale runs 0% to 100%.
Share of 341 completed flights by arrival against schedule.
10 of 44 late departures made up the time and arrived on time, 23% of them. 8 flights left on time and still arrived late.
The worst days
Worst days for OO 3735
The latest arrival of the period was on 15 June 2026, 3 hours 54 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 |
|---|---|---|
| 15 June 2026 | 3 hours 54 minutes | Carrier |
| 30 March 2026 | 3 hours 16 minutes | Extreme weather |
| 16 July 2026 | 2 hours 40 minutes | Extreme weather |
| 16 April 2026 | 2 hours 31 minutes | Carrier |
| 15 March 2026 | 2 hours 15 minutes | Carrier |
Delay causes
Why OO 3735 runs late
Carrier accounts for 50% of the 2,247 delay minutes carriers reported here, and the remaining four split what is left.
- 50%Carrier
- 34%Extreme weather
- 16%National Airspace System
Extreme weather accounts for 34% 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 5.7 times the usual weather exposure. The split is drawn from 2,247 delay minutes reported on OO 3735.
Cancellations sit at 2.29% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 2.6% 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.
OO 3735 is not only a SEA to RDM flight. It also flew RDM to SEA (318 flights, 88.4% on time) often enough to be scored on its own. Airlines attach one number to several legs of an aircraft's day, and each leg keeps its own record here, so check which city pair is on your booking before reading a rate.
One caution: this is a thin sample. 349 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.
| Also flown as | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| RDM to SEAthin sample | 318 | 88.4% | 68 min | 2.52% | A |
What to do with this
Booking OO 3735
For a booking, read OO 3735 as 87.7% on time with 2.29% cancelled over 349 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 4141 on the same route87.9%
- SkyWest Airlines 4047 on the same route89.0%
- 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.