DEN to LGA flight delays & on-time performance
Nonstop flights from Denver International Airport to LaGuardia Airport · 1,620 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at DEN or LGA right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Denver (DEN) to New York (LGA) arrived on time 72% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 2.8% were cancelled, and 10% arrived an hour or more late.
- Delta Air Lines was the most punctual airline here (79% on time); Southwest Airlines was the least (64%).
- Departures scheduled around 6am did best (92% on time); around 3pm did worst (56%).
- Saturday was the most reliable day to fly (82% on time) and Sunday the least (66%).
- The largest source of delay minutes was air traffic control & airport congestion (43%).
Which airline is most on time from DEN to LGA?
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 |
|---|---|---|---|---|---|
| Delta Air Lines | 79% | 4.6% | 18 min | 8.0% | 1,032 |
| United Airlines | 75% | 1.8% | 19 min | 10.2% | 2,019 |
| Frontier Airlines | 66% | 3.3% | 29 min | 13.7% | 121 |
| Southwest Airlines | 64% | 2.8% | 23 min | 12.0% | 1,495 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am92%390 flights
- 7am84%237 flights
- 8am87%419 flights
- 9am77%413 flights
- 10am71%279 flights
- 11am72%785 flights
- 12pm72%107 flights
- 1pm71%118 flights
- 2pm63%436 flights
- 3pm56%182 flights
- 4pm64%370 flights
- 5pm61%923 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday67%4.6% cancelled
- Tuesday72%2.8% cancelled
- Wednesday73%1.1% cancelled
- Thursday70%1.6% cancelled
- Friday76%2.0% cancelled
- Saturday82%1.4% cancelled
- Sunday66%5.2% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Air traffic control & airport congestion43%
- Airline (crew, maintenance, cleaning, fueling)28%
- Late-arriving aircraft26%
- Extreme weather2%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather63%
- Airline (crew, maintenance, cleaning, fueling)19%
- Air traffic control & airport congestion18%
- Security0%
DEN to LGA: common questions
- How often are DEN to LGA flights on time?
- 72% 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 Denver to New York cancelled?
- 2.8% of scheduled flights were cancelled (129 of 4,667).
- How long are typical delays?
- Across all flights the average arrival delay was 20 min (early arrivals count as zero). Flights that were late arrived 68 min behind schedule on average, and 10.4% of flights were an hour or more late.
- How long is taxi time at DEN?
- Flights on this route spent 20 min taxiing from the gate to takeoff on average.
Related routes
Return trip: LGA to DEN — 71% on time
More flights from Denver
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: DEN → LGA, nonstop flights by US airlines that report to the DOT. How we calculate this.