Best Time to Fly JFK to DEN: On-Time Stats by Hour & Airline
John F. Kennedy International → Denver International
Data through July 2026 · Last updated October 18, 2026
1,560 flights were scheduled from New York (JFK) to Denver (DEN) in the last 12 months, and 72.7% of those that flew arrived on time, 4.9 points below the US average of 77.6%.
Among 3 airlines, Delta Air Lines led with 75.0% on time and Frontier Airlines was last with 67.3%.
Over 24 months, Tuesday was the most reliable day (83% on time) and July the worst month (62%).
The cancellation rate was 2.8% (US average 1.8%).
JFK to DEN 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 |
|---|---|---|---|---|
| Delta Air Lines | 75.0% | 68 min | 2.3% | 966 |
| JetBlue | 69.2% | 61 min | 4.0% | 545 |
| Frontier Airlines | 67.3% | 124 min | 0.0% | 49 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly JFK to DEN
On-time arrival % by scheduled departure hour (local time), 3,112 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | Limited data | 12 | |
| 7am–8am | 80.8% | 3.1% | 97 |
| 8am–9am | 84.4% | 1.2% | 961 |
| 9am–10am | 79.1% | 3.0% | 133 |
| 10am–11am | 80.4% | 8.9% | 56 |
| 11am–12pm | 76.3% | 0.0% | 59 |
| 12pm–1pm | Limited data | 5 | |
| 1pm–2pm | Limited data | 19 | |
| 3pm–4pm | 68.4% | 1.6% | 251 |
| 4pm–5pm | 67.4% | 1.4% | 293 |
| 5pm–6pm | 59.5% | 0.0% | 42 |
| 6pm–7pm | 48.6% | 2.6% | 38 |
| 7pm–8pm | 67.8% | 3.1% | 542 |
| 8pm–9pm | 65.5% | 3.3% | 540 |
| 9pm–10pm | 81.2% | 0.0% | 64 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on JFK to DEN
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) | 79.3% | +2.7 pts | 0.0% | 58 |
| Christmas & New Year (Dec 20 - Jan 3) | 69.1% | -7.5 pts | 4.2% | 142 |
| Summer peak (Jun 15 - Aug 15) | 63.3% | -13.3 pts | 6.1% | 593 |
| All other days | 76.6% | — | 1.2% | 2,319 |
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).