Historical on-time performance
Denver to Raleigh-durham
1,437 miData through Dec 2025Source: US DOT · BTS
Flights on DEN–RDU arrive on time 71% of the time over the last 12 months.
On-time rate71%arrived within 15 min
p90 delay50 min1 in 10 flights is worse (tail risk)
Cancelled0.1%of scheduled flights
based on 1,518 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesbestOn-time77%Medianon timep9040 minCancel0.1%Flights816
- Southwest AirlinesOn-time63%Median5 minp9070 minCancel0.1%Flights702
Why flights run late
Delay causes
- Airline26%
- Weather1%
- Air traffic (NAS)20%
- Late aircraft53%
- Security0%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly DEN → RDU
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Mornings are the most reliable time of day to fly this route — 82% on time.
- Mornings82% on time · p90 25 min · 1,524 flights
- Middays77% on time · p90 35 min · 1,307 flights
- Overnights73% on time · p90 70 min · 305 flights
- Afternoons68% on time · p90 50 min · 473 flights
- Early mornings62% on time · p90 90 min · 61 flights · limited
- Evenings61% on time · p90 70 min · 2,085 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 69% to 75% on time.
- Saturdays75% on time · p90 45 min · 768 flights
- Sundays73% on time · p90 45 min · 836 flights
- Tuesdays72% on time · p90 45 min · 806 flights
- Wednesdays71% on time · p90 45 min · 796 flights
- Thursdays70% on time · p90 55 min · 852 flights
- Mondays70% on time · p90 50 min · 852 flights
- Fridays69% on time · p90 65 min · 845 flights
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