Flight number record
OO 5217
SkyWest Airlines · Spokane to San Francisco
- Route
- GEG → SFO
- Departs
- 12:35
- Flights
- 323
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 5217, 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 5217 lands a B+, level with the national rate of 77.3%. Roughly one flight in four arrives 15 minutes late or worse, and those flights are late by close to two hours on average. That rests on 323 flights, with a median arrival 7 minutes early.
Key figures
On time
76.9%
Arrivals under 15 minutes late, of 321 completed flights
Avg delay
104 min
Across delayed arrivals only, not all flights
Cancelled
0.31%
National rate is 1.89%
1 hour+ late
10.9%
National rate is 8.3%
These figures cover 323 flights between September 2025 and August 2026. Beyond the headline rate, 10.9% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When OO 5217 flies
OO 5217 flies GEG to SFO without a single fixed slot. Its most common scheduled departure was 12:35, used on 86 of 323 flights, with 12:37 (79 flights) and 12:45 (36 flights) next.
- Departs 12:3586 flights26.6%
- Departs 12:3779 flights24.5%
- Departs 12:4536 flights11.1%
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 12:35 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and OO 5217 runs level with that at 76.9%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
OO 5217 next to GEG to SFO
Every carrier on GEG to SFO combined arrived on time 72.2% of the time across 890 flights, so OO 5217 is 5 points ahead of it. SkyWest flew 839 flights on the same city pair under all its flight numbers, including this one, and those ran 72.3% on time. Across its whole network SkyWest Airlines managed 78.7%, which this flight trails by 2 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 5217thin sample | 323 | 76.9% | 104 min | 0.31% | B+ |
| All SkyWest Airlines on GEG–SFO | 839 | 72.3% | 79 min | 0.36% | C+ |
| All carriers on GEG–SFO | 890 | 72.2% | 77 min | 0.34% | C+ |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 5217 quarter by quarter
OO 5217 did not run the same all year. Its best quarter was Jul–Sep 2025 at 93.3% on time and its weakest Apr–Jun 2026 at 69.9%, a swing of 23 points on roughly 65 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 flights93.3%
- Oct–Dec 202577 flights83.1%
- Jan–Mar 202670 flights77.1%
- Apr–Jun 202684 flights69.9%
- Jul–Sep 202662 flights70.5%
Scale runs 60% to 100%.
By weekday, OO 5217 did best on Tuesday at 91.1% on time and worst on Wednesday at 70.0%. Each day rests on about 46 flights, so a gap of 21 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 5217 runs when it is late
OO 5217 often beats the schedule: 118 of 321 completed flights, 37%, arrived 15 minutes or more early. The 74 late arrivals split 22 under half an hour, 17 between 30 and 60 minutes, and 35 an hour or more.
- 15+ min early118 flights36.8%
- Within 15 min129 flights40.2%
- 15–29 min late22 flights6.9%
- 30–59 min late17 flights5.3%
- 1–2 hours late20 flights6.2%
- 2+ hours late15 flights4.7%
Scale runs 0% to 100%.
Share of 321 completed flights by arrival against schedule.
16 of 75 late departures made up the time and arrived on time, 21% of them. 15 flights left on time and still arrived late.
The worst days
Worst days for OO 5217
The latest arrival of the period was on 14 January 2026, 21 hours 40 minutes behind schedule; most of its delay minutes were filed as extreme weather. The five worst days are spread across January, June, April, October and November, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 14 January 2026 | 21 hours 40 minutes | Extreme weather |
| 8 June 2026 | 7 hours 41 minutes | Carrier |
| 20 April 2026 | 7 hours 25 minutes | National Airspace System |
| 19 October 2025 | 7 hours 9 minutes | Carrier |
| 29 November 2025 | 5 hours 41 minutes | Late-arriving aircraft |
Delay causes
Why OO 5217 runs late
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 7,704 reported delay minutes.
- 35%National Airspace System
- 23%Carrier
- 21%Late-arriving aircraft
- 21%Extreme weather
Extreme weather accounts for 21% 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 3.4 times the usual weather exposure. The split is drawn from 7,704 delay minutes reported on OO 5217.
Cancellations are rare at 0.31%, below the national 1.89% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.
Connections and routes
What a delay on this flight costs
10.9% 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 733 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.
The same number turns up on five other city pairs in the data, including DEN to AUS (18), ORD to TVC (5) and PDX to SFO (5), but none flew often enough under OO 5217 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to GEG to SFO only.
One caution: this is a thin sample. 323 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 5217
For a booking, read OO 5217 as 76.9% on time with 0.31% cancelled over 323 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- GEG to SFO, every carrier and departure
- SFO to GEG, the return direction
- 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
- How often a connection fails at the major US hubs
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.