Historical on-time performance
St. Louis to Jacksonville
753 miData through Dec 2025Source: US DOT · BTS
Flights on STL–JAX arrive on time 80% of the time over the last 12 months.
On-time rate80%arrived within 15 min
p90 delay30 min1 in 10 flights is worse (tail risk)
Cancelled0.2%of scheduled flights
based on 544 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time80%Medianon timep9030 minCancel0.2%Flights544
Why flights run late
Delay causes
- Airline33%
- Weather2%
- Air traffic (NAS)14%
- Late aircraft51%
- Security1%
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 → JAX
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 65% to 88% on time.
- Mornings88% on time · p90 15 min · 494 flights
- Middays83% on time · p90 20 min · 309 flights
- Afternoons73% on time · p90 30 min · 132 flights · limited
- Evenings70% on time · p90 45 min · 162 flights · limited
- Overnights65% on time · p90 55 min · 108 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 73% to 86% on time.
- Fridays86% on time · p90 20 min · 168 flights · limited
- Wednesdays84% on time · p90 20 min · 166 flights · limited
- Tuesdays83% on time · p90 25 min · 166 flights · limited
- Thursdays81% on time · p90 25 min · 166 flights · limited
- Mondays81% on time · p90 20 min · 171 flights · limited
- Saturdays79% on time · p90 30 min · 165 flights · limited
- Sundays73% on time · p90 35 min · 203 flights
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