Historical on-time performance
Denver to Dallas
651 miData through May 2026Source: US DOT · BTS
Flights on DEN–DAL 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)
Cancelled1.2%of scheduled flights
based on 3,014 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time70%Medianon timep9055 minCancel1.2%Flights3,014
Why flights run late
Delay causes
- Airline31%
- Weather2%
- Air traffic (NAS)20%
- Late aircraft48%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline14%
- Weather61%
- Air traffic (NAS)25%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 36 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 → DAL
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 — 88% on time.
- Mornings88% on time · p90 15 min · 3,296 flights
- Middays75% on time · p90 35 min · 2,167 flights
- Afternoons62% on time · p90 55 min · 1,469 flights
- Evenings55% on time · p90 90 min · 2,091 flights
- Overnights53% on time · p90 90 min · 716 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 68% to 76% on time.
- Wednesdays76% on time · p90 40 min · 1,366 flights
- Saturdays74% on time · p90 45 min · 1,137 flights
- Tuesdays74% on time · p90 50 min · 1,375 flights
- Mondays71% on time · p90 40 min · 1,462 flights
- Fridays70% on time · p90 50 min · 1,474 flights
- Thursdays69% on time · p90 55 min · 1,454 flights
- Sundays68% on time · p90 55 min · 1,471 flights
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