New York (LGA) to Denver (DEN): On-Time Performance
Data through July 2026
The calendar drives reliability on LGA–DEN. October 2024 flights landed on schedule 90% of the time, but June 2026 dropped to 59% — a gap of 31 points. Across the full period the route averages 74% on-time against a national 78%. Morning departures also hold up better than evening ones (86% vs 62%), which matters most in the rough months.
- On-time
- 74%
- arrived <15 min late
- Avg delay
- 21 min
- completed flights
- Cancelled
- 2.3%
- Flights/day
- 13
- last 12 months
- Duration
- 4h 29m
- scheduled
- Distance
- 1,620 mi
Best airline from LGA to DEN
4 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| United Airlinesmost reliable | 79% | 17 min | 1.5% | 4,163 |
| Delta Air Lines | 72% | 23 min | 3.2% | 2,165 |
| Southwest Airlines | 68% | 22 min | 2.6% | 2,967 |
| Frontier Airlines | 65% | 36 min | 3.8% | 365 |
Monthly on-time trend
Best time to fly from LGA to DEN
Aim for departures around 6 a.m. (90% on-time); avoid 8 p.m. departures (54%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 74% | 19 min |
| Tuesday | 75% | 19 min |
| Wednesday | 74% | 21 min |
| Thursday | 72% | 22 min |
| Friday | 73% | 21 min |
| Saturdaybest | 77% | 20 min |
| Sunday | 71% | 22 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft40%
- Airline operations29%
- National airspace system26%
- Weather5%
Frequently asked questions
- How often are flights from LGA to DEN delayed?
- 27% of LGA–DEN flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 21 minutes.
- Which airline is most reliable from LGA to DEN?
- United Airlines has the best on-time record on this route at 79%, based on 4,163 flights. 4 airlines flew LGA–DEN frequently enough to compare in this period.
- What is the best time of day to fly from LGA to DEN?
- Departures around 6 a.m. have the best record (90% on-time), while departures around 8 p.m. have the worst (54%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from LGA to DEN?
- The scheduled LGA–DEN flight time averages 4h 29m over 1,620 miles. Actual arrival times vary — flights on this route land 15+ minutes late 27% of the time.
- How often are LGA to DEN flights cancelled?
- 2.3% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, slightly above the national rate of 1.6%.
- What is the worst month to fly from LGA to DEN?
- June 2026 was the roughest month in this dataset, with only 59% of arrivals on time. The best was October 2024 at 90%. If your dates are flexible, that 31-point gap is worth planning around.
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Based on 9,660 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.