Best Time to Fly DEN to DAL: On-Time Stats by Hour & Airline
Denver International → Dallas Love Field
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 70.6% of Denver (DEN) to Dallas (DAL) flights arrived on time (2,983 scheduled flights). That is 7.0 points below the national average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Saturday was the most reliable day (76% on time) and June the worst month (56%).
The cancellation rate was 1.2% (US average 1.8%).
DEN to DAL 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 | 70.6% | 56 min | 1.2% | 2,983 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly DEN to DAL
On-time arrival % by scheduled departure hour (local time), 6,185 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 95.4% | 0.8% | 373 |
| 6am–7am | 92.5% | 1.4% | 432 |
| 7am–8am | 89.9% | 0.9% | 420 |
| 8am–9am | 89.0% | 0.8% | 397 |
| 9am–10am | 82.9% | 1.3% | 381 |
| 10am–11am | 78.8% | 0.9% | 448 |
| 11am–12pm | 71.7% | 1.0% | 197 |
| 12pm–1pm | 77.3% | 0.8% | 385 |
| 1pm–2pm | 70.2% | 1.8% | 488 |
| 2pm–3pm | 69.6% | 2.0% | 293 |
| 3pm–4pm | 62.9% | 1.5% | 326 |
| 4pm–5pm | 60.1% | 1.0% | 288 |
| 5pm–6pm | 60.1% | 1.9% | 324 |
| 6pm–7pm | 56.4% | 1.9% | 461 |
| 7pm–8pm | 51.6% | 0.8% | 521 |
| 8pm–9pm | 51.5% | 0.9% | 451 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on DEN to DAL
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) | 79.7% | +5.1 pts | 0.0% | 128 |
| Christmas & New Year (Dec 20 - Jan 3) | 70.1% | -4.5 pts | 0.7% | 288 |
| Summer peak (Jun 15 - Aug 15) | 63.0% | -11.6 pts | 0.7% | 1,112 |
| All other days | 74.5% | — | 1.4% | 4,657 |
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).