Flight number record
OO 5534
SkyWest Airlines · Redmond to San Francisco
- Route
- RDM → SFO
- Departs
- 19:50
- Flights
- 252
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 5534, 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 5534 draws a D. Roughly one flight in three arrives at least 15 minutes late, and the typical late arrival is a little over an hour behind schedule. Build slack into anything you connect to. That rests on 252 flights, with a median arrival 6 minutes late.
The national on-time rate over the same period is 77.3%, so OO 5534 runs 16 points behind the country as a whole. Across a thousand flights that is about 164 extra late arrivals.
Key figures
On time
60.9%
Arrivals under 15 minutes late, of 248 completed flights
Avg delay
71 min
Across delayed arrivals only, not all flights
Cancelled
1.59%
National rate is 1.89%
1 hour+ late
18.5%
National rate is 8.3%
These figures cover 252 flights between September 2025 and August 2026. Beyond the headline rate, 18.5% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When OO 5534 flies
OO 5534 flies RDM to SFO without a single fixed slot. Its most common scheduled departure was 19:50, used on 48 of 252 flights, with 19:51 (36 flights) and 19:39 (33 flights) next.
- Departs 19:5048 flights19.0%
- Departs 19:5136 flights14.3%
- Departs 19:3933 flights13.1%
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 19:50 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and OO 5534 runs 7 points worse at 60.9%. 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 5534 next to RDM to SFO
Every carrier on RDM to SFO combined arrived on time 61.8% of the time across 1,311 flights, so OO 5534 is about level with it. SkyWest flew 655 flights on the same city pair under all its flight numbers, including this one, and those ran 60.3% on time. Across its whole network SkyWest Airlines managed 78.7%, which this flight trails by 18 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 5534thin sample | 252 | 60.9% | 71 min | 1.59% | D |
| All SkyWest Airlines on RDM–SFO | 655 | 60.3% | 77 min | 1.37% | D |
| All carriers on RDM–SFO | 1,311 | 61.8% | 71 min | 0.92% | D+ |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 5534 quarter by quarter
OO 5534 did not run the same all year. Its best quarter was Jan–Mar 2026 at 76.9% on time and its weakest Apr–Jun 2026 at 51.2%, a swing of 26 points on roughly 84 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 202523 flights—
- Oct–Dec 202591 flights62.6%
- Jan–Mar 202667 flights76.9%
- Apr–Jun 202643 flights51.2%
- Jul–Sep 202628 flights—
Scale runs 45% to 80%. Rows with fewer than 30 flights show a dash.
By weekday, OO 5534 did best on Friday at 62.5% on time and worst on Monday at 43.6%. Each day rests on about 36 flights, so a gap of 19 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 5534 runs when it is late
OO 5534 often beats the schedule: 70 of 248 completed flights, 28%, arrived 15 minutes or more early. The 97 late arrivals split 25 under half an hour, 26 between 30 and 60 minutes, and 46 an hour or more.
- 15+ min early70 flights28.2%
- Within 15 min81 flights32.7%
- 15–29 min late25 flights10.1%
- 30–59 min late26 flights10.5%
- 1–2 hours late27 flights10.9%
- 2+ hours late19 flights7.7%
Scale runs 0% to 100%.
Share of 248 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 74 departures that left 15 minutes late or more, only 5 made it up before arrival. In the other direction, 28 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at SFO.
The worst days
Worst days for OO 5534
The latest arrival of the period was on 3 January 2026, 4 hours 21 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 3 January 2026 | 4 hours 21 minutes | National Airspace System |
| 21 December 2025 | 3 hours 39 minutes | National Airspace System |
| 20 March 2026 | 3 hours 21 minutes | Carrier |
| 23 December 2025 | 2 hours 58 minutes | National Airspace System |
| 2 January 2026 | 2 hours 55 minutes | National Airspace System |
Delay causes
Why OO 5534 runs late
National Airspace System accounts for 66% of the 6,893 delay minutes carriers reported here, and the remaining four split what is left.
- 66%National Airspace System
- 18%Late-arriving aircraft
- 15%Carrier
- 1%Extreme weather
66% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 4,551 minutes out of 6,893, against a national NAS share of 21%. The split is drawn from 6,893 delay minutes reported on OO 5534.
Cancellations sit at 1.59% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
18.5% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
The same number turns up on two other city pairs in the data, including ORD to ALB (22) and GRR to ORD (10), but none flew often enough under OO 5534 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to RDM to SFO only.
One caution: this is a thin sample. 252 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 5534
For a booking, OO 5534 is a flight to put a long connection behind. 18.5% of its completed flights arrived an hour or more late, which a short layover will not absorb. If the onward flight is on a separate ticket, the risk sits with you.
Related
Where to go next
- RDM to SFO, every carrier and departure
- SFO to RDM, the return direction
- United Airlines 2262 on the same route43.9%
- San Francisco International (SFO) 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
- The best time of day to fly, according to 7.05 million flight records
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.