Best Time to Fly TUL to STL: On-Time Stats by Hour & Airline
Tulsa International → St Louis Lambert International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 92.4% of Tulsa (TUL) to St. Louis (STL) flights arrived on time (403 scheduled flights). That is 14.8 points above the national average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
October has been the best month (96% on time) and Sunday the weakest day of the week (85%).
1.2% of flights were cancelled, versus 1.8% nationally.
TUL to STL 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 | 92.4% | 44 min | 1.2% | 403 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly TUL to STL
On-time arrival % by scheduled departure hour (local time), 1,082 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 97.7% | 1.6% | 312 |
| 6am–7am | 98.2% | 0.6% | 165 |
| 7am–8am | 92.0% | 3.9% | 52 |
| 8am–9am | 88.9% | 0.0% | 45 |
| 9am–10am | Limited data | 5 | |
| 11am–12pm | Limited data | 1 | |
| 1pm–2pm | Limited data | 1 | |
| 3pm–4pm | 87.7% | 1.2% | 82 |
| 4pm–5pm | 86.8% | 1.7% | 116 |
| 5pm–6pm | 85.2% | 0.0% | 110 |
| 6pm–7pm | 77.1% | 0.5% | 193 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on TUL to STL
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 | 26 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 88.3% | -2.7 pts | 0.0% | 60 |
| Summer peak (Jun 15 - Aug 15) | 86.8% | -4.2 pts | 0.0% | 144 |
| All other days | 91.1% | — | 1.3% | 852 |
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).