Best Time to Fly STL to TPA: On-Time Stats by Hour & Airline
St Louis Lambert International → Tampa International
Data through July 2026 · Last updated October 18, 2026
1,228 flights were scheduled from St. Louis (STL) to Tampa (TPA) in the last 12 months, and 80.1% of those that flew arrived on time, 2.5 points above the US average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Wednesday was the most reliable day (86% on time) and July the worst month (70%).
The cancellation rate was 0.6% (US average 1.8%).
STL to TPA 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 | 80.4% | 60 min | 0.4% | 1,199 |
| Frontier Airlines | Limited data | 29 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly STL to TPA
On-time arrival % by scheduled departure hour (local time), 2,386 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 95.9% | 0.0% | 172 |
| 6am–7am | 96.4% | 0.0% | 83 |
| 7am–8am | 87.0% | 2.4% | 166 |
| 8am–9am | 92.0% | 0.7% | 276 |
| 9am–10am | 83.9% | 6.3% | 95 |
| 10am–11am | 86.3% | 0.6% | 177 |
| 11am–12pm | Limited data | 24 | |
| 12pm–1pm | 76.7% | 6.2% | 32 |
| 1pm–2pm | 90.2% | 0.0% | 92 |
| 2pm–3pm | 79.0% | 1.5% | 200 |
| 3pm–4pm | 71.0% | 1.6% | 188 |
| 4pm–5pm | 54.7% | 0.0% | 107 |
| 5pm–6pm | 75.2% | 0.0% | 113 |
| 6pm–7pm | 81.1% | 1.8% | 221 |
| 7pm–8pm | 67.4% | 2.0% | 197 |
| 8pm–9pm | 66.7% | 1.0% | 206 |
| 9pm–10pm | 83.3% | 2.7% | 37 |
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 TPA
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) | 70.2% | -12.5 pts | 2.1% | 48 |
| Christmas & New Year (Dec 20 - Jan 3) | 77.4% | -5.4 pts | 0.0% | 107 |
| Summer peak (Jun 15 - Aug 15) | 71.7% | -11.0 pts | 0.8% | 402 |
| All other days | 82.7% | — | 1.5% | 1,829 |
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).