Best Time to Fly TPA to STL: On-Time Stats by Hour & Airline
Tampa International → St Louis Lambert International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 83.5% of Tampa (TPA) to St. Louis (STL) flights arrived on time (1,229 scheduled flights). That is 5.8 points above the national average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Tuesday was the most reliable day (91% on time) and March the worst month (77%).
The cancellation rate was 0.6% (US average 1.8%).
TPA 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 | 83.4% | 57 min | 0.5% | 1,200 |
| Frontier Airlines | Limited data | 29 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly TPA to STL
On-time arrival % by scheduled departure hour (local time), 2,374 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 93.3% | 2.2% | 91 |
| 6am–7am | 94.8% | 0.4% | 232 |
| 7am–8am | 95.2% | 0.9% | 211 |
| 8am–9am | 95.1% | 3.1% | 191 |
| 9am–10am | Limited data | 22 | |
| 10am–11am | 81.2% | 0.0% | 85 |
| 11am–12pm | 84.2% | 0.0% | 209 |
| 12pm–1pm | 85.9% | 1.0% | 209 |
| 1pm–2pm | 86.6% | 4.3% | 164 |
| 2pm–3pm | 82.3% | 1.1% | 87 |
| 3pm–4pm | 85.2% | 3.6% | 56 |
| 4pm–5pm | 75.9% | 2.2% | 89 |
| 5pm–6pm | 85.6% | 0.0% | 90 |
| 6pm–7pm | 73.5% | 1.4% | 214 |
| 7pm–8pm | 70.2% | 1.9% | 161 |
| 8pm–9pm | 71.1% | 1.8% | 169 |
| 9pm–10pm | 53.6% | 2.3% | 86 |
| 10pm–11pm | Limited data | 8 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on TPA 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) | 77.1% | -7.0 pts | 0.0% | 48 |
| Christmas & New Year (Dec 20 - Jan 3) | 86.9% | +2.9 pts | 0.0% | 107 |
| Summer peak (Jun 15 - Aug 15) | 80.5% | -3.5 pts | 1.0% | 405 |
| All other days | 84.0% | — | 1.8% | 1,814 |
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).