Historical on-time performance
St. Louis to Dallas
546 miData through Dec 2025Source: US DOT · BTS
Flights on STL–DAL arrive on time 77% of the time over the last 12 months.
On-time rate77%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled2.3%of scheduled flights
based on 1,992 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time77%Medianon timep9040 minCancel2.3%Flights1,992
Why flights run late
Delay causes
- Airline32%
- Weather6%
- Air traffic (NAS)17%
- Late aircraft45%
- 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 STL → DAL
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 — 89% on time.
- Mornings89% on time · p90 10 min · 2,016 flights
- Middays81% on time · p90 25 min · 1,152 flights
- Afternoons68% on time · p90 45 min · 1,171 flights
- Overnights67% on time · p90 75 min · 808 flights
- Evenings67% on time · p90 50 min · 1,052 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 72% to 82% on time.
- Tuesdays82% on time · p90 30 min · 927 flights
- Wednesdays79% on time · p90 30 min · 926 flights
- Fridays77% on time · p90 30 min · 929 flights
- Saturdays77% on time · p90 40 min · 641 flights
- Mondays76% on time · p90 40 min · 935 flights
- Thursdays76% on time · p90 35 min · 921 flights
- Sundays72% on time · p90 45 min · 920 flights
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