Historical on-time performance
Fort Lauderdale to St. Louis
1,056 miData through Dec 2025Source: US DOT · BTS
Flights on FLL–STL arrive on time 81% of the time over the last 12 months.
On-time rate81%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled0.7%of scheduled flights
based on 735 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time81%Medianon timep9040 minCancel0.7%Flights735
Why flights run late
Delay causes
- Airline36%
- Weather5%
- Air traffic (NAS)17%
- Late aircraft42%
- 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 FLL → STL
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 — 91% on time.
- Mornings91% on time · p90 10 min · 925 flights
- Middays77% on time · p90 35 min · 302 flights
- Afternoons61% on time · p90 75 min · 339 flights
- Evenings60% on time · p90 65 min · 715 flights
- Overnights52% on time · p90 85 min · 122 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 68% to 80% on time.
- Tuesdays80% on time · p90 35 min · 285 flights
- Wednesdays78% on time · p90 35 min · 230 flights
- Thursdays76% on time · p90 40 min · 339 flights
- Mondays75% on time · p90 40 min · 259 flights
- Fridays73% on time · p90 45 min · 253 flights
- Saturdays73% on time · p90 50 min · 524 flights
- Sundays68% on time · p90 65 min · 513 flights
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