Best Time to Fly STL to DFW: On-Time Stats by Hour & Airline
St Louis Lambert International → Dallas/Fort Worth International
Data through July 2026 · Last updated October 18, 2026
2,381 flights were scheduled from St. Louis (STL) to Dallas/Fort Worth (DFW) in the last 12 months, and 75.2% of those that flew arrived on time, 2.5 points below the US average of 77.6%.
Among 5 airlines, Envoy Air led with 82.8% on time and PSA Airlines was last with 62.5%.
Over 24 months, Tuesday was the most reliable day (82% on time) and June the worst month (64%).
The cancellation rate was 3.3% (US average 1.8%).
STL to DFW 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 |
|---|---|---|---|---|
| Envoy Air | 82.8% | 73 min | 3.4% | 264 |
| American Airlines | 75.2% | 118 min | 3.3% | 1,868 |
| Frontier Airlines | 70.7% | 141 min | 2.1% | 95 |
| SkyWest Airlines | 68.1% | 92 min | 1.4% | 70 |
| PSA Airlines | 62.5% | 114 min | 4.8% | 84 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly STL to DFW
On-time arrival % by scheduled departure hour (local time), 4,793 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 90.1% | 2.7% | 675 |
| 6am–7am | Limited data | 15 | |
| 7am–8am | 77.6% | 2.4% | 637 |
| 8am–9am | 79.7% | 2.5% | 237 |
| 9am–10am | 80.3% | 3.6% | 657 |
| 10am–11am | 74.4% | 1.2% | 170 |
| 11am–12pm | 78.3% | 4.5% | 378 |
| 12pm–1pm | 83.4% | 1.9% | 320 |
| 1pm–2pm | 63.4% | 5.4% | 186 |
| 2pm–3pm | Limited data | 21 | |
| 3pm–4pm | 70.2% | 5.1% | 372 |
| 4pm–5pm | 67.9% | 1.7% | 241 |
| 5pm–6pm | 59.1% | 3.6% | 469 |
| 6pm–7pm | 63.6% | 0.6% | 165 |
| 7pm–8pm | 48.9% | 3.5% | 232 |
| 8pm–9pm | Limited data | 18 | |
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 DFW
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) | 63.3% | -13.0 pts | 4.3% | 94 |
| Christmas & New Year (Dec 20 - Jan 3) | 73.4% | -3.0 pts | 2.9% | 174 |
| Summer peak (Jun 15 - Aug 15) | 70.4% | -6.0 pts | 2.5% | 888 |
| All other days | 76.3% | — | 3.2% | 3,637 |
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).