Best Time to Fly DAL to DEN: On-Time Stats by Hour & Airline
Dallas Love Field → Denver International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 69.8% of Dallas (DAL) to Denver (DEN) flights arrived on time (2,985 scheduled flights). That is 7.8 points below 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 (76% on time) and June the worst month (58%).
The cancellation rate was 1.4% (US average 1.8%).
DAL to DEN 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 | 69.8% | 57 min | 1.4% | 2,985 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly DAL to DEN
On-time arrival % by scheduled departure hour (local time), 6,173 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 93.6% | 0.9% | 555 |
| 7am–8am | 89.4% | 0.9% | 437 |
| 8am–9am | 78.7% | 1.6% | 435 |
| 9am–10am | 84.2% | 2.2% | 278 |
| 10am–11am | 77.4% | 0.8% | 268 |
| 11am–12pm | 77.4% | 2.7% | 477 |
| 12pm–1pm | 77.4% | 1.6% | 423 |
| 1pm–2pm | 69.4% | 1.0% | 406 |
| 2pm–3pm | 71.7% | 0.8% | 397 |
| 3pm–4pm | 70.2% | 1.8% | 381 |
| 4pm–5pm | 57.5% | 0.8% | 263 |
| 5pm–6pm | 55.7% | 1.4% | 422 |
| 6pm–7pm | 65.1% | 2.2% | 359 |
| 7pm–8pm | 56.2% | 1.1% | 460 |
| 8pm–9pm | 65.3% | 1.6% | 249 |
| 9pm–10pm | 64.0% | 0.6% | 173 |
| 10pm–11pm | 60.8% | 2.1% | 190 |
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 DEN
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) | 74.2% | -0.3 pts | 0.0% | 132 |
| Christmas & New Year (Dec 20 - Jan 3) | 70.7% | -3.8 pts | 0.3% | 288 |
| Summer peak (Jun 15 - Aug 15) | 65.8% | -8.8 pts | 1.4% | 1,111 |
| All other days | 74.5% | — | 1.5% | 4,642 |
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).