Historical on-time performance
Charleston to Miami
489 miData through May 2026Source: US DOT · BTS
Flights on CHS–MIA arrive on time 77% of the time over the last 12 months.
On-time rate77%arrived within 15 min
p90 delay50 min1 in 10 flights is worse (tail risk)
Cancelled1.2%of scheduled flights
based on 950 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- American AirlinesOn-time77%Medianon timep9050 minCancel1.2%Flights950
Why flights run late
Delay causes
- Airline27%
- Weather1%
- Air traffic (NAS)10%
- Late aircraft62%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline9%
- Weather91%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 11 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 CHS → MIA
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 · 1,264 flights
- Middays81% on time · p90 35 min · 298 flights
- Overnights65% on time · p90 110 min · 345 flights
- Evenings63% on time · p90 85 min · 626 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 73% to 83% on time.
- Wednesdays83% on time · p90 30 min · 374 flights
- Tuesdays80% on time · p90 40 min · 368 flights
- Fridays79% on time · p90 65 min · 375 flights
- Mondays77% on time · p90 55 min · 375 flights
- Thursdays76% on time · p90 50 min · 369 flights
- Saturdays75% on time · p90 50 min · 379 flights
- Sundays73% on time · p90 60 min · 374 flights
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