Historical on-time performance
Denver to Memphis
872 miData through Dec 2025Source: US DOT · BTS
Flights on DEN–MEM arrive on time 69% of the time over the last 12 months.
On-time rate69%arrived within 15 min
p90 delay70 min1 in 10 flights is worse (tail risk)
Cancelled0.6%of scheduled flights
based on 1,064 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesbestOn-time73%Medianon timep9055 minCancel0.4%Flights728
- Southwest AirlinesOn-time61%Median5 minp9095 minCancel0.9%Flights336
Why flights run late
Delay causes
- Airline29%
- Weather1%
- Air traffic (NAS)11%
- Late aircraft59%
- 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 → MEM
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 45% to 85% on time.
- Mornings85% on time · p90 20 min · 206 flights
- Middays82% on time · p90 30 min · 1,399 flights
- Evenings68% on time · p90 70 min · 1,355 flights
- Afternoons66% on time · p90 50 min · 596 flights
- Overnights45% on time · p90 100 min · 209 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 70% to 76% on time.
- Tuesdays76% on time · p90 45 min · 498 flights
- Saturdays74% on time · p90 50 min · 507 flights
- Wednesdays73% on time · p90 45 min · 522 flights
- Mondays73% on time · p90 65 min · 561 flights
- Sundays72% on time · p90 50 min · 590 flights
- Thursdays71% on time · p90 60 min · 542 flights
- Fridays70% on time · p90 75 min · 545 flights
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