Flight number record
OO 6321
SkyWest Airlines · Dallas-Fort Worth to Provo
- Route
- DFW → PVU
- Departs
- 11:40
- Flights
- 280
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s OO 6321, 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 6321 lands a B, 2 points better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by about an hour on average. That is a workable record, not a spotless one. That rests on 280 flights, with a median arrival 7 minutes early.
Key figures
On time
79.6%
Arrivals under 15 minutes late, of 274 completed flights
Avg delay
68 min
Across delayed arrivals only, not all flights
Cancelled
1.43%
National rate is 1.81%
1 hour+ late
6.9%
National rate is 8.1%
These figures cover 280 flights between July 2025 and June 2026. The median arrival is 7 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.
Schedule
When OO 6321 flies
OO 6321 flies DFW to PVU without a single fixed slot. Its most common scheduled departure was 11:40, used on 55 of 280 flights, with 11:25 (54 flights) and 11:39 (53 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 11:4055 flights19.6%
- Departs 11:2554 flights19.3%
- Departs 11:3953 flights18.9%
Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 11:40 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and OO 6321 runs level with that at 79.6%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
Against the route
OO 6321 next to DFW to PVU
Every carrier on DFW to PVU combined arrived on time 75.2% of the time across 758 flights, so OO 6321 is 4 points ahead of it. SkyWest flew 734 flights on the same city pair under all its flight numbers, including this one, and those ran 75.9% on time. Across its whole network SkyWest Airlines managed 79.0%, close to this flight's figure.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 6321thin sample | 280 | 79.6% | 68 min | 1.43% | B |
| All SkyWest Airlines on DFW–PVU | 734 | 75.9% | 80 min | 2.32% | B |
| All carriers on DFW–PVU | 758 | 75.2% | 79 min | 2.24% | B |
| SkyWest Airlines, whole network | 852,935 | 79.0% | 88 min | 1.77% | B |
Across the year
OO 6321 quarter by quarter
Quarter by quarter OO 6321 held fairly steady: 82.0% in Jul–Sep 2025, 81.5% in Oct–Dec 2025 and 75.9% in Jan–Mar 2026. A spread of 6 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202592 flights82.0%
- Oct–Dec 202592 flights81.5%
- Jan–Mar 202690 flights75.9%
- Apr–Jun 20266 flights—
Scale runs 65% to 85%. Rows with fewer than 30 flights show a dash.
By weekday, OO 6321 did best on Friday at 87.5% on time and worst on Saturday at 73.7%. Each day rests on about 40 flights, so a gap of 14 points is worth noticing but could still narrow in another year.
Delay causes
Why OO 6321 runs late
One category carries most of the weight here. Carrier accounts for 43% of the 3,793 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 43%Carrier
- 34%Extreme weather
- 17%Late-arriving aircraft
- 6%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 5.4 times the usual weather exposure. The split is drawn from 3,793 delay minutes reported on OO 6321.
Cancellations sit at 1.43% against a national 1.81%, which is ordinary. Diversions add another 0.71%.
Connections and routes
What a delay on this flight costs
6.9% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.
The 958 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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
The same number turns up on four other city pairs in the data, including MFR to PHX (37), PHX to MFR (37) and ORD to DAY (14), but none flew often enough under OO 6321 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DFW to PVU only.
One caution: this is a thin sample. 280 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 6321
For a booking, read OO 6321 as 79.6% on time with 1.43% cancelled over 280 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- DFW to PVU, every carrier and departure
- PVU to DFW, the return direction
- Dallas/Fort Worth International (DFW) 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.