Best Time to Fly DEN to GRR: On-Time Stats by Hour & Airline
Denver International → Gerald R. Ford International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 76.2% of Denver (DEN) to Grand Rapids (GRR) flights arrived on time (1,235 scheduled flights). That is 1.4 points below the national average of 77.6%.
Among 3 airlines, Frontier Airlines led with 87.8% on time and Southwest Airlines was last with 67.5%.
Over 24 months, Saturday was the most reliable day (80% on time) and June the worst month (66%).
The cancellation rate was 0.2% (US average 1.8%).
DEN to GRR 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 |
|---|---|---|---|---|
| Frontier Airlines | 87.8% | 65 min | 0.0% | 148 |
| United Airlines | 78.2% | 55 min | 0.1% | 727 |
| Southwest Airlines | 67.5% | 45 min | 0.3% | 359 |
| SkyWest Airlines | Limited data | 1 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly DEN to GRR
On-time arrival % by scheduled departure hour (local time), 2,513 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | Limited data | 4 | |
| 7am–8am | Limited data | 5 | |
| 8am–9am | Limited data | 6 | |
| 9am–10am | 86.3% | 0.0% | 484 |
| 10am–11am | 86.2% | 0.0% | 383 |
| 11am–12pm | 79.1% | 0.0% | 163 |
| 12pm–1pm | 70.8% | 0.0% | 73 |
| 1pm–2pm | 80.2% | 0.0% | 81 |
| 2pm–3pm | 78.0% | 0.0% | 59 |
| 3pm–4pm | 81.2% | 0.0% | 202 |
| 4pm–5pm | 82.4% | 2.6% | 76 |
| 5pm–6pm | 65.1% | 0.6% | 721 |
| 6pm–7pm | 63.7% | 0.0% | 203 |
| 7pm–8pm | 48.8% | 0.0% | 43 |
| 8pm–9pm | Limited data | 9 | |
| 9pm–10pm | Limited data | 1 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on DEN to GRR
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) | 67.3% | -10.7 pts | 0.0% | 49 |
| Christmas & New Year (Dec 20 - Jan 3) | 73.6% | -4.5 pts | 0.0% | 107 |
| Summer peak (Jun 15 - Aug 15) | 68.1% | -9.9 pts | 0.6% | 485 |
| All other days | 78.1% | — | 0.2% | 1,872 |
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).