Best Time to Fly DAL to STL: On-Time Stats by Hour & Airline
Dallas Love Field → St Louis Lambert International
Data through July 2026 · Last updated October 18, 2026
1,939 flights were scheduled from Dallas (DAL) to St. Louis (STL) in the last 12 months, and 76.3% of those that flew arrived on time, 1.3 points below the US average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
February has been the best month (89% on time) and Sunday the weakest day of the week (73%).
1.4% of flights were cancelled, versus 1.8% nationally.
DAL 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 | 76.3% | 60 min | 1.4% | 1,939 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly DAL to STL
On-time arrival % by scheduled departure hour (local time), 4,006 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 95.7% | 1.7% | 472 |
| 7am–8am | 89.1% | 1.5% | 271 |
| 8am–9am | 91.7% | 1.1% | 281 |
| 9am–10am | 84.9% | 0.6% | 160 |
| 10am–11am | 85.6% | 4.3% | 94 |
| 11am–12pm | 82.0% | 1.4% | 352 |
| 12pm–1pm | 85.8% | 2.5% | 240 |
| 1pm–2pm | 72.2% | 1.6% | 194 |
| 2pm–3pm | 80.0% | 1.7% | 117 |
| 3pm–4pm | 77.1% | 1.1% | 274 |
| 4pm–5pm | 68.4% | 2.6% | 117 |
| 5pm–6pm | 69.3% | 0.7% | 277 |
| 6pm–7pm | 73.2% | 0.5% | 192 |
| 7pm–8pm | 77.2% | 2.1% | 382 |
| 8pm–9pm | 61.5% | 1.2% | 242 |
| 9pm–10pm | 54.5% | 1.5% | 134 |
| 10pm–11pm | 66.8% | 1.9% | 207 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on DAL 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) | 84.2% | +3.9 pts | 1.3% | 77 |
| Christmas & New Year (Dec 20 - Jan 3) | 81.0% | +0.7 pts | 0.6% | 164 |
| Summer peak (Jun 15 - Aug 15) | 73.6% | -6.7 pts | 0.6% | 686 |
| All other days | 80.3% | — | 1.8% | 3,079 |
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).