CMH to DEN flight delays & on-time performance
Nonstop flights from John Glenn Columbus International Airport to Denver International Airport · 1,154 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at CMH or DEN right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Columbus (CMH) to Denver (DEN) arrived on time 80% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0.6% were cancelled, and 6% arrived an hour or more late.
- United Airlines was the most punctual airline here (82% on time); Frontier Airlines was the least (70%).
- Departures scheduled around 5am did best (94% on time); around 6pm did worst (67%).
- Saturday was the most reliable day to fly (86% on time) and Sunday the least (77%).
- The largest source of delay minutes was late-arriving aircraft (37%).
Which airline is most on time from CMH to DEN?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| United Airlines | 82% | 0.8% | 14 min | 5.7% | 728 |
| Southwest Airlines | 80% | 0.4% | 14 min | 6.5% | 919 |
| Frontier Airlines | 70% | 0.8% | 24 min | 9.1% | 122 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am94%178 flights
- 6am93%168 flights
- 8am85%284 flights
- 9am85%82 flights
- 11am92%24 flights
- 12pm79%77 flights
- 1pm83%18 flights
- 2pm65%27 flights
- 3pm75%221 flights
- 4pm78%209 flights
- 5pm69%35 flights
- 6pm67%225 flights
- 7pm76%82 flights
- 8pm68%110 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday78%0.4% cancelled
- Tuesday78%0.0% cancelled
- Wednesday83%0.0% cancelled
- Thursday81%0.0% cancelled
- Friday78%0.0% cancelled
- Saturday86%1.9% cancelled
- Sunday77%2.2% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft37%
- Airline (crew, maintenance, cleaning, fueling)31%
- Air traffic control & airport congestion29%
- Extreme weather3%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather64%
- Airline (crew, maintenance, cleaning, fueling)27%
- Air traffic control & airport congestion9%
- Security0%
CMH to DEN: common questions
- How often are CMH to DEN flights on time?
- 80% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Columbus to Denver cancelled?
- 0.6% of scheduled flights were cancelled (11 of 1,769).
- How long are typical delays?
- Across all flights the average arrival delay was 15 min (early arrivals count as zero). Flights that were late arrived 69 min behind schedule on average, and 6.3% of flights were an hour or more late.
- How long is taxi time at CMH?
- Flights on this route spent 14 min taxiing from the gate to takeoff on average.
Related routes
Return trip: DEN to CMH — 74% on time
More flights from Columbus
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: CMH → DEN, nonstop flights by US airlines that report to the DOT. How we calculate this.