Best Time to Fly DFW to STL: On-Time Stats by Hour & Airline
Dallas/Fort Worth International → St Louis Lambert International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 68.4% of Dallas/Fort Worth (DFW) to St. Louis (STL) flights arrived on time (2,382 scheduled flights). That is 9.3 points below the national average of 77.6%.
Envoy Air was the most punctual of the 5 airlines on the route at 89.1%, while American Airlines trailed at 64.5%.
February has been the best month (84% on time) and Sunday the weakest day of the week (64%).
3.1% of flights were cancelled, versus 1.8% nationally.
DFW 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 |
|---|---|---|---|---|
| Envoy Air | 89.1% | 45 min | 3.0% | 266 |
| Frontier Airlines | 85.3% | 66 min | 0.0% | 95 |
| PSA Airlines | 70.5% | 57 min | 6.0% | 84 |
| SkyWest Airlines | 66.2% | 60 min | 1.4% | 70 |
| American Airlines | 64.5% | 85 min | 3.2% | 1,867 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly DFW to STL
On-time arrival % by scheduled departure hour (local time), 4,795 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | Limited data | 2 | |
| 7am–8am | 83.8% | 2.2% | 646 |
| 8am–9am | 82.4% | 3.8% | 291 |
| 9am–10am | 79.5% | 2.8% | 212 |
| 10am–11am | 82.2% | 2.0% | 345 |
| 11am–12pm | 70.7% | 4.2% | 96 |
| 12pm–1pm | 84.9% | 1.4% | 74 |
| 1pm–2pm | 76.1% | 2.9% | 510 |
| 2pm–3pm | 67.3% | 4.1% | 412 |
| 3pm–4pm | 53.6% | 1.4% | 279 |
| 4pm–5pm | 68.3% | 2.0% | 345 |
| 5pm–6pm | 67.9% | 3.0% | 591 |
| 6pm–7pm | 48.1% | 3.0% | 166 |
| 7pm–8pm | 53.8% | 5.1% | 98 |
| 8pm–9pm | 56.2% | 3.1% | 224 |
| 9pm–10pm | 64.0% | 2.6% | 417 |
| 10pm–11pm | 53.0% | 4.6% | 87 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on DFW 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) | 67.8% | -5.7 pts | 4.3% | 94 |
| Christmas & New Year (Dec 20 - Jan 3) | 62.9% | -10.6 pts | 2.3% | 174 |
| Summer peak (Jun 15 - Aug 15) | 61.0% | -12.5 pts | 2.2% | 887 |
| All other days | 73.5% | — | 3.0% | 3,640 |
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).