Best Time to Fly DEN to LGA: On-Time Stats by Hour & Airline
Denver International → LaGuardia
Data through July 2026 · Last updated October 18, 2026
4,667 flights were scheduled from Denver (DEN) to New York (LGA) in the last 12 months, and 71.9% of those that flew arrived on time, 5.7 points below the US average of 77.6%.
Among 4 airlines, Delta Air Lines led with 79.3% on time and Southwest Airlines was last with 63.8%.
Over 24 months, Saturday was the most reliable day (81% on time) and July the worst month (61%).
The cancellation rate was 2.8% (US average 1.8%).
DEN to LGA 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 | 79.3% | 82 min | 4.5% | 1,032 |
| United Airlines | 74.5% | 71 min | 1.8% | 2,019 |
| Frontier Airlines | 65.8% | 82 min | 3.3% | 121 |
| Southwest Airlines | 63.8% | 59 min | 2.8% | 1,495 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly DEN to LGA
On-time arrival % by scheduled departure hour (local time), 9,257 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | Limited data | 13 | |
| 6am–7am | 91.9% | 1.1% | 830 |
| 7am–8am | 86.6% | 2.7% | 591 |
| 8am–9am | 86.4% | 1.1% | 699 |
| 9am–10am | 77.0% | 0.8% | 705 |
| 10am–11am | 77.4% | 1.5% | 730 |
| 11am–12pm | 73.7% | 2.4% | 1,394 |
| 12pm–1pm | 70.3% | 1.4% | 279 |
| 1pm–2pm | 71.5% | 1.2% | 251 |
| 2pm–3pm | 65.3% | 3.1% | 812 |
| 3pm–4pm | 67.7% | 1.7% | 593 |
| 4pm–5pm | 64.7% | 2.4% | 722 |
| 5pm–6pm | 60.7% | 2.4% | 1,638 |
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 LGA
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) | 82.2% | +6.5 pts | 0.0% | 163 |
| Christmas & New Year (Dec 20 - Jan 3) | 78.7% | +2.9 pts | 2.3% | 351 |
| Summer peak (Jun 15 - Aug 15) | 61.1% | -14.6 pts | 4.2% | 1,627 |
| All other days | 75.7% | — | 1.5% | 7,116 |
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).