Flight number record
OO 6320
SkyWest Airlines · Phoenix to Oklahoma City
- Route
- PHX → OKC
- Departs
- 18:55
- Flights
- 297
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 6320, 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 6320 sits in the middle of the pack with a C+. About seven flights in ten arrive on time by the DOT's definition, 6 points worse than the national rate of 77.3%. The late ones land an hour and a half behind schedule. That rests on 297 flights, with a median arrival 3 minutes early.
The national on-time rate over the same period is 77.3%, so OO 6320 runs 6 points behind the country as a whole. Across a thousand flights that is about 64 extra late arrivals.
Key figures
On time
70.9%
Arrivals under 15 minutes late, of 296 completed flights
Avg delay
95 min
Across delayed arrivals only, not all flights
Cancelled
0.34%
National rate is 1.89%
1 hour+ late
13.5%
National rate is 8.3%
These figures cover 297 flights between September 2025 and August 2026. Beyond the headline rate, 13.5% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When OO 6320 flies
OO 6320 flies PHX to OKC without a single fixed slot. Its most common scheduled departure was 18:55, used on 69 of 297 flights, with 18:56 (47 flights) and 19:04 (37 flights) next.
- Departs 18:5569 flights23.2%
- Departs 18:5647 flights15.8%
- Departs 19:0437 flights12.5%
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 18:55 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and OO 6320 runs 3 points better at 70.9%. 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 6320 next to PHX to OKC
Every carrier on PHX to OKC combined arrived on time 75.5% of the time across 1,834 flights, so OO 6320 is 5 points behind it. SkyWest flew 833 flights on the same city pair under all its flight numbers, including this one, and those ran 76.3% on time. Across its whole network SkyWest Airlines managed 78.7%, which this flight trails by 8 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 6320thin sample | 297 | 70.9% | 95 min | 0.34% | C+ |
| All SkyWest Airlines on PHX–OKC | 833 | 76.3% | 78 min | 0.60% | B+ |
| All carriers on PHX–OKC | 1,834 | 75.5% | 63 min | 0.87% | B+ |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 6320 quarter by quarter
OO 6320 did not run the same all year. Its best quarter was Apr–Jun 2026 at 80.7% on time and its weakest Jul–Sep 2026 at 63.3%, a swing of 17 points on roughly 74 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 202526 flights—
- Oct–Dec 202574 flights70.3%
- Jan–Mar 202653 flights64.2%
- Apr–Jun 202683 flights80.7%
- Jul–Sep 202661 flights63.3%
Scale runs 55% to 85%. Rows with fewer than 30 flights show a dash.
By weekday, OO 6320 ranged from 65.2% on Thursday to 77.1% on Tuesday. With about 42 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 6320 runs when it is late
The 86 late arrivals split 21 under half an hour, 25 between 30 and 60 minutes, and 40 an hour or more.
- 15+ min early69 flights23.3%
- Within 15 min141 flights47.6%
- 15–29 min late21 flights7.1%
- 30–59 min late25 flights8.4%
- 1–2 hours late25 flights8.4%
- 2+ hours late15 flights5.1%
Scale runs 0% to 100%.
Share of 296 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 82 departures that left 15 minutes late or more, only 7 made it up before arrival. 11 flights left on time and still arrived late.
The worst days
Worst days for OO 6320
The latest arrival of the period was on 9 May 2026, 15 hours 8 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The five worst days are spread across May, March, July and April, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 9 May 2026 | 15 hours 8 minutes | Late-arriving aircraft |
| 16 March 2026 | 14 hours 33 minutes | Late-arriving aircraft |
| 27 July 2026 | 13 hours 7 minutes | Carrier |
| 3 April 2026 | 3 hours 54 minutes | Extreme weather |
| 9 March 2026 | 3 hours 31 minutes | Carrier |
Delay causes
Why OO 6320 runs late
Late-arriving aircraft accounts for 43% of the 8,165 delay minutes carriers reported here, and the remaining four split what is left.
- 43%Late-arriving aircraft
- 41%Carrier
- 9%Extreme weather
- 7%National Airspace System
43% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 8,165 reported delay minutes here, that single category outweighs weather by 5 to one. The split is drawn from 8,165 delay minutes reported on OO 6320.
Cancellations are rare at 0.34%, 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
13.5% 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 833 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 two other city pairs in the data, including GRR to ORD (5) and ORD to GRR (5), but none flew often enough under OO 6320 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to PHX to OKC only.
One caution: this is a thin sample. 297 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 6320
For a booking, OO 6320 is a flight to put a long connection behind. 13.5% 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
- PHX to OKC, every carrier and departure
- OKC to PHX, the return direction
- Phoenix Sky Harbor International (PHX) 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
- Why the first flight of the morning is statistically safest
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.