Carrier route record
WNPHX→OKC
Southwest Airlines · Phoenix to Oklahoma City
- Flights
- 866
- Period
- September 2025 to August 2026
- Share of route
- 47%
- Carriers
- 4
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with Southwest Airlines.
Southwest on PHX to OKC sits in the middle of the pack with a C+. Close to three flights in four arrive on time by the DOT's definition, 4 points worse than the national rate of 77.3%. The late ones land about 50 minutes behind schedule. That rests on 866 flights, with a median arrival right on schedule.
The national on-time rate over the same period is 77.3%, so Southwest on PHX to OKC runs 4 points behind the country as a whole. Across a thousand flights that is about 42 extra late arrivals.
Key figures
On time
73.1%
Arrivals under 15 minutes late, of 859 completed flights
Avg delay
50 min
Across delayed arrivals only, not all flights
Cancelled
0.81%
National rate is 1.89%
Whole route
75.5%
Every carrier on PHX to OKC, 1,834 flights
These figures cover 866 flights between September 2025 and August 2026. On-time means an arrival less than 15 minutes after the scheduled gate time, the same threshold the Department of Transportation uses in its own reports. Cancelled and diverted flights are excluded from the on-time rate and counted separately, which is why the cancellation column matters on its own.
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Carrier by carrier
Southwest against every carrier on PHX to OKC
Southwest flew 866 of the 1,834 flights on PHX to OKC, about 47% of it. Its 73.1% on time is 2 points worse than the route as a whole, which runs 75.5%. Ranked by on-time rate it is last of four carriers on the route, where the range runs from Envoy at 100.0% to Southwest at 73.1%. Two of those carriers flew fewer than 365 flights here, so treat their positions as rough.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Envoy Airthin sample | 1 | 100.0% | — | 0.00% | A+ |
| American Airlinesthin sample | 134 | 85.4% | 66 min | 2.99% | A |
| SkyWest Airlines | 833 | 76.3% | 78 min | 0.60% | B+ |
| Southwest Airlines (this page) | 866 | 73.1% | 50 min | 0.81% | C+ |
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Departure window
When Southwest runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 40 points, against half a point between the best and worst carrier.
- 5am–8am27 flights—
- 8am–11am256 flights89.4%
- 11am–2pm100 flights79.6%
- 2pm–5pm132 flights72.0%
- 5pm–8pm269 flights60.5%
- 8pm–5am82 flights49.4%
Scale runs 40% to 95%. Rows with fewer than 30 flights show a dash.
The 8pm–5am window is where this operation falls apart: 49.4% on time, against 89.4% for the 8am–11am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 5pm–8pm window is the busiest, with 269 flights scheduled in it.
Across the year
Southwest on PHX to OKC through the year
June is the worst month at 60.7% on time, 28 points below September, the best at 89.1%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. December was the busiest month here, with 87 flights.
Across the week, Tuesday is the strongest day at 82.2% on time and Monday the weakest at 68.8%, a spread of 13 points.
Arrival by arrival
How late Southwest on PHX to OKC runs when it is late
The 231 late arrivals split 95 under half an hour, 70 between 30 and 60 minutes, and 66 an hour or more.
- 15+ min early107 flights12.5%
- Within 15 min521 flights60.7%
- 15–29 min late95 flights11.1%
- 30–59 min late70 flights8.1%
- 1–2 hours late51 flights5.9%
- 2+ hours late15 flights1.7%
Scale runs 0% to 100%.
Share of 859 completed flights by arrival against schedule.
69 of 284 late departures made up the time and arrived on time, 24% of them. Only 16 left on time and still arrived late.
The worst days
Worst days for Southwest on PHX to OKC
The latest arrival of the period was on 3 July 2026, 4 hours 33 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. On four of the five worst days the largest share was filed as carrier-caused (crew, maintenance, fuelling, baggage).
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 3 July 2026 | 4 hours 33 minutes | Late-arriving aircraft |
| 16 July 2026 | 2 hours 46 minutes | Carrier |
| 22 June 2026 | 2 hours 44 minutes | Carrier |
| 13 October 2025 | 2 hours 40 minutes | Carrier |
| 30 November 2025 | 2 hours 38 minutes | Carrier |
Delay causes
Why Southwest runs late on this route
Late-arriving aircraft accounts for 54% of the 12,000 delay minutes carriers reported here, and the remaining four split what is left.
- 54%Late-arriving aircraft
- 39%Carrier
- 7%National Airspace System
- 1%Extreme weather
54% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 12,000 reported delay minutes here, that single category outweighs weather by 54 to one. The split is drawn from 11,591 reported delay minutes.
The largest share of delay minutes, 39%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 4,481 of the 12,000 delay minutes reported here.
Cancellations are rare at 0.81%, 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 stage length
What a delay here costs
7.7% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about 50 minutes, which a normal layover absorbs.
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 return leg is a different operation and performs like one: it runs 82.9% on time across 866 flights, 10 points above this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 10 points of difference.
One caution: this is a thin sample. 866 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 Southwest on PHX to OKC
Put together: treat all of this as provisional. 866 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 73.1% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 859 completed flights over 12 months sit behind that.
Related
Where to go next
- PHX to OKC, every carrier
- Southwest on OKC to PHX, the return leg
- American Airlines on PHX to OKC85.4%
- SkyWest Airlines on PHX to OKC76.3%
- Southwest Airlines network-wide record
- Phoenix Sky Harbor International (PHX) delay statistics
- Why the first flight of the morning is statistically safest
- The best time of day to fly, according to 7.05 million flight records
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.