Denver (DEN) to Columbus (CMH): On-Time Performance
Data through May 2026
Denver (DEN) to Columbus (CMH) effectively runs on two schedules. In October 2024, 86% of arrivals were on time; in June 2025 that fell to 56% — a 30-point seasonal swing. Across the full period the route averages 74% on-time against a national 78%. Morning departures also hold up better than evening ones (85% vs 63%), which matters most in the rough months.
- On-time
- 74%
- arrived <15 min late
- Avg delay
- 16 min
- completed flights
- Cancelled
- 0.5%
- Flights/day
- 4.8
- last 12 months
- Duration
- 2h 47m
- scheduled
- Distance
- 1,154 mi
Best airline from DEN to CMH
3 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| United Airlinesmost reliable | 80% | 12 min | 0.3% | 1,457 |
| Frontier Airlines | 78% | 17 min | 1.6% | 190 |
| Southwest Airlines | 68% | 19 min | 0.4% | 1,844 |
Monthly on-time trend
Best time to fly from DEN to CMH
Aim for departures around 8 a.m. (91% on-time); avoid 7 p.m. departures (52%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 74% | 16 min |
| Tuesday | 76% | 15 min |
| Wednesday | 71% | 16 min |
| Thursday | 74% | 16 min |
| Friday | 71% | 18 min |
| Saturdaybest | 77% | 14 min |
| Sunday | 73% | 16 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft53%
- Airline operations29%
- National airspace system17%
- Weather1%
Frequently asked questions
- How often are flights from DEN to CMH delayed?
- 26% of DEN–CMH flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 16 minutes.
- Which airline is most reliable from DEN to CMH?
- United Airlines has the best on-time record on this route at 80%, based on 1,457 flights. 3 airlines flew DEN–CMH frequently enough to compare in this period.
- What is the best time of day to fly from DEN to CMH?
- Departures around 8 a.m. have the best record (91% on-time), while departures around 7 p.m. have the worst (52%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from DEN to CMH?
- The scheduled DEN–CMH flight time averages 2h 47m over 1,154 miles. Actual arrival times vary — flights on this route land 15+ minutes late 26% of the time.
- How often are DEN to CMH flights cancelled?
- 0.5% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from DEN to CMH?
- June 2025 was the roughest month in this dataset, with only 56% of arrivals on time. The best was October 2024 at 86%. If your dates are flexible, that 30-point gap is worth planning around.
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Based on 3,491 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.