Denver (DEN) to Dallas (DAL): On-Time Performance
Data through July 2026
When you fly DEN to DAL matters as much as anything else about the booking: the route swung from 84% on-time in October 2024 to just 52% in June 2026. Across the full period the route averages 72% on-time against a national 78%. Morning departures also hold up better than evening ones (86% vs 54%), which matters most in the rough months.
- On-time
- 72%
- arrived <15 min late
- Avg delay
- 17 min
- completed flights
- Cancelled
- 1.2%
- Flights/day
- 8.2
- last 12 months
- Duration
- 1h 58m
- scheduled
- Distance
- 651 mi
Monthly on-time trend
Best time to fly from DEN to DAL
Aim for departures around 5 a.m. (95% on-time); avoid 7 p.m. departures (51%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 73% | 15 min |
| Tuesday | 73% | 17 min |
| Wednesday | 75% | 14 min |
| Thursday | 69% | 19 min |
| Friday | 71% | 18 min |
| Saturdaybest | 76% | 14 min |
| Sunday | 66% | 21 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft45%
- Airline operations32%
- National airspace system21%
- Weather2%
Frequently asked questions
- How often are flights from DEN to DAL delayed?
- 28% of DEN–DAL flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 17 minutes.
- What is the best time of day to fly from DEN to DAL?
- Departures around 5 a.m. have the best record (95% on-time), while departures around 7 p.m. have the worst (51%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from DEN to DAL?
- The scheduled DEN–DAL flight time averages 1h 58m over 651 miles. Actual arrival times vary — flights on this route land 15+ minutes late 28% of the time.
- How often are DEN to DAL flights cancelled?
- 1.2% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from DEN to DAL?
- June 2026 was the roughest month in this dataset, with only 52% of arrivals on time. The best was October 2024 at 84%. If your dates are flexible, that 33-point gap is worth planning around.
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Based on 6,492 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.