Flight number record

OO 6320

SkyWest Airlines · Phoenix to Oklahoma City

Route: PHX → OKC
Departs: 19:04
Flights: 297
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 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 77.6%. 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 77.6%, so OO 6320 runs 6 points behind the country as a whole. Across a thousand flights that is about 63 extra late arrivals.

On time

71.3%

Arrivals under 15 minutes late, of 296 completed flights

Avg delay

83 min

Across delayed arrivals only, not all flights

Cancelled

0.34%

National rate is 1.81%

1 hour+ late

12.8%

National rate is 8.1%

These figures cover 297 flights between July 2025 and June 2026. Beyond the headline rate, 12.8% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.

Schedule

When OO 6320 flies

OO 6320 flies PHX to OKC without a single fixed slot. Its most common scheduled departure was 19:04, used on 69 of 297 flights, with 18:55 (68 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 19:0469 flights23.2%
Departs 18:5568 flights22.9%

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 19:04 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.2%, and OO 6320 runs 3 points better at 71.3%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

OO 6320 next to PHX to OKC

Every carrier on PHX to OKC combined arrived on time 76.6% of the time across 1,860 flights, so OO 6320 is 5 points behind it. SkyWest flew 843 flights on the same city pair under all its flight numbers, including this one, and those ran 76.8% on time. Across its whole network SkyWest Airlines managed 79.0%, which this flight trails by 8 points.

OO 6320 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 6320thin sample	297	71.3%	83 min	0.34%	C+
All SkyWest Airlines on PHX–OKC	843	76.8%	75 min	0.59%	B+
All carriers on PHX–OKC	1,860	76.6%	61 min	0.91%	B+
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	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 Jan–Mar 2026 at 64.2%, 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 202587 flights67.4%
Oct–Dec 202574 flights70.3%
Jan–Mar 202653 flights64.2%
Apr–Jun 202683 flights80.7%

Scale runs 55% to 85%. Rows with fewer than 30 flights show a dash.

By weekday, OO 6320 did best on Saturday at 78.4% on time and worst on Monday at 63.8%. Each day rests on about 42 flights, so a gap of 15 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 6320 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 46% of the 7,083 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.

Late-arriving aircraft
46%
Carrier
38%
Extreme weather
11%
National Airspace System
5%
Security
0%

Extreme weather accounts for 11% 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 1.8 times the usual weather exposure. The split is drawn from 7,083 delay minutes reported on OO 6320.

Cancellations are rare at 0.34%, below the national 1.81% 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

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 12.8% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum 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. 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 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. 12.8% 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.

Where to go next

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.

Key figures