Historical on-time performance
New York to Denver
1,620 miData through May 2026Source: US DOT · BTS
Flights on LGA–DEN arrive on time 68% of the time over the last 12 months.
On-time rate68%arrived within 15 min
p90 delay60 min1 in 10 flights is worse (tail risk)
Cancelled3.0%of scheduled flights
based on 4,522 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesbestOn-time76%Medianon timep9045 minCancel2.0%Flights2,012
- Delta Air LinesOn-time67%Medianon timep9070 minCancel4.3%Flights1,038
- Southwest AirlinesOn-time60%Median5 minp9075 minCancel3.3%Flights1,441
- Frontier AirlinesOn-time39%Median25 minp90145 minCancel6.5%Flights31
Why flights run late
Delay causes
- Airline28%
- Weather6%
- Air traffic (NAS)28%
- Late aircraft38%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline22%
- Weather57%
- Air traffic (NAS)21%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 135 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly LGA → DEN
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 87% on time.
- Mornings87% on time · p90 15 min · 4,160 flights
- Middays82% on time · p90 30 min · 3,202 flights
- Afternoons68% on time · p90 65 min · 2,999 flights
- Evenings64% on time · p90 85 min · 2,719 flights
- Overnights60% on time · p90 85 min · 1,190 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 72% to 78% on time.
- Saturdays78% on time · p90 35 min · 1,414 flights
- Wednesdays77% on time · p90 50 min · 2,154 flights
- Tuesdays77% on time · p90 45 min · 2,167 flights
- Mondays75% on time · p90 45 min · 2,193 flights
- Fridays74% on time · p90 55 min · 2,200 flights
- Thursdays73% on time · p90 55 min · 2,178 flights
- Sundays72% on time · p90 55 min · 1,964 flights
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