Best Time to Fly STL to OKC: On-Time Stats by Hour & Airline
St Louis Lambert International → Okc Will Rogers International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 82.3% of St. Louis (STL) to Oklahoma City (OKC) flights arrived on time (412 scheduled flights). That is 4.7 points above the national average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
November has been the best month (91% on time) and Sunday the weakest day of the week (76%).
1.2% of flights were cancelled, versus 1.8% nationally.
STL to OKC on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Southwest Airlines | 82.3% | 43 min | 1.2% | 411 |
| Envoy Air | Limited data | 1 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly STL to OKC
On-time arrival % by scheduled departure hour (local time), 1,105 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 9am–10am | 89.5% | 1.5% | 203 |
| 10am–11am | 92.5% | 0.7% | 294 |
| 11am–12pm | 89.2% | 0.0% | 37 |
| 12pm–1pm | Limited data | 2 | |
| 1pm–2pm | 83.3% | 3.1% | 32 |
| 2pm–3pm | Limited data | 12 | |
| 3pm–4pm | Limited data | 1 | |
| 4pm–5pm | Limited data | 1 | |
| 7pm–8pm | Limited data | 28 | |
| 8pm–9pm | 81.6% | 0.7% | 142 |
| 9pm–10pm | 64.4% | 0.0% | 146 |
| 10pm–11pm | 69.1% | 1.4% | 207 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on STL to OKC
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | Limited data | 28 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 76.7% | -7.9 pts | 0.0% | 60 |
| Summer peak (Jun 15 - Aug 15) | 66.7% | -17.9 pts | 0.7% | 151 |
| All other days | 84.6% | — | 1.0% | 866 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).