Historical on-time performance
Denver to Pittsburgh
1,290 miData through May 2026Source: US DOT · BTS
Flights on DEN–PIT arrive on time 70% of the time over the last 12 months.
On-time rate70%arrived within 15 min
p90 delay55 min1 in 10 flights is worse (tail risk)
Cancelled0.6%of scheduled flights
based on 1,640 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesbestOn-time78%Medianon timep9040 minCancel0.6%Flights905
- Southwest AirlinesOn-time61%Median5 minp9070 minCancel0.7%Flights735
Why flights run late
Delay causes
- Airline30%
- Weather2%
- Air traffic (NAS)14%
- Late aircraft54%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline30%
- Weather50%
- Air traffic (NAS)20%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 10 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 DEN → PIT
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 — 86% on time.
- Mornings86% on time · p90 20 min · 820 flights
- Middays79% on time · p90 35 min · 1,824 flights
- Afternoons66% on time · p90 60 min · 421 flights
- Evenings65% on time · p90 70 min · 1,860 flights
- Overnights62% on time · p90 70 min · 263 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 70% to 75% on time.
- Sundays75% on time · p90 50 min · 757 flights
- Wednesdays74% on time · p90 40 min · 707 flights
- Tuesdays74% on time · p90 40 min · 746 flights
- Mondays74% on time · p90 45 min · 776 flights
- Saturdays73% on time · p90 50 min · 606 flights
- Fridays71% on time · p90 55 min · 784 flights
- Thursdays70% on time · p90 60 min · 812 flights
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