Historical on-time performance
Charleston to Miami
489 miData through Dec 2025Source: US DOT · BTS
Flights on CHS–MIA arrive on time 78% of the time over the last 12 months.
On-time rate78%arrived within 15 min
p90 delay50 min1 in 10 flights is worse (tail risk)
Cancelled1.3%of scheduled flights
based on 889 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- American AirlinesOn-time78%Medianon timep9050 minCancel1.3%Flights889
Why flights run late
Delay causes
- Airline29%
- Weather1%
- Air traffic (NAS)10%
- Late aircraft60%
- 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 CHS → MIA
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 — 88% on time.
- Mornings88% on time · p90 15 min · 1,228 flights
- Middays80% on time · p90 35 min · 235 flights
- Afternoons72% on time · p90 55 min · 81 flights · limited
- Overnights66% on time · p90 105 min · 232 flights
- Evenings65% on time · p90 85 min · 725 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 75% to 82% on time.
- Wednesdays82% on time · p90 30 min · 356 flights
- Tuesdays80% on time · p90 40 min · 351 flights
- Fridays79% on time · p90 60 min · 360 flights
- Mondays77% on time · p90 65 min · 360 flights
- Thursdays77% on time · p90 60 min · 354 flights
- Sundays77% on time · p90 50 min · 362 flights
- Saturdays75% on time · p90 45 min · 358 flights
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