Columbus (CMH) to Dallas (DAL): On-Time Performance
Data through July 2026
The calendar drives reliability on CMH–DAL. January 2026 flights landed on schedule 94% of the time, but July 2025 dropped to 51% — a gap of 43 points. Across the full period the route averages 76% on-time against a national 78%. Morning departures also hold up better than evening ones (92% vs 53%), which matters most in the rough months.
- On-time
- 76%
- arrived <15 min late
- Avg delay
- 14 min
- completed flights
- Cancelled
- 0.9%
- Flights/day
- 1.5
- last 12 months
- Duration
- 2h 36m
- scheduled
- Distance
- 919 mi
Monthly on-time trend
Best time to fly from CMH to DAL
Aim for departures around 5 a.m. (100% on-time); avoid 7 p.m. departures (46%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 78% | 17 min |
| Tuesdaybest | 85% | 7 min |
| Wednesday | 83% | 10 min |
| Thursday | 73% | 12 min |
| Friday | 74% | 13 min |
| Saturday | 74% | 16 min |
| Sunday | 69% | 19 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft54%
- Airline operations22%
- National airspace system21%
- Weather3%
Frequently asked questions
- How often are flights from CMH to DAL delayed?
- 24% of CMH–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 14 minutes.
- What is the best time of day to fly from CMH to DAL?
- Departures around 5 a.m. have the best record (100% on-time), while departures around 7 p.m. have the worst (46%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from CMH to DAL?
- The scheduled CMH–DAL flight time averages 2h 36m over 919 miles. Actual arrival times vary — flights on this route land 15+ minutes late 24% of the time.
- How often are CMH to DAL flights cancelled?
- 0.9% 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 CMH to DAL?
- July 2025 was the roughest month in this dataset, with only 51% of arrivals on time. The best was January 2026 at 94%. If your dates are flexible, that 43-point gap is worth planning around.
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Based on 971 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.