Historical on-time performance
Baltimore to Charleston
472 miData through Dec 2025Source: US DOT · BTS
Flights on BWI–CHS arrive on time 76% of the time over the last 12 months.
On-time rate76%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled1.4%of scheduled flights
based on 1,240 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time76%Medianon timep9040 minCancel1.4%Flights1,240
Why flights run late
Delay causes
- Airline25%
- Weather6%
- Air traffic (NAS)21%
- Late aircraft48%
- 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 BWI → CHS
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 — 86% on time.
- Mornings86% on time · p90 15 min · 1,115 flights
- Middays80% on time · p90 25 min · 586 flights
- Afternoons76% on time · p90 40 min · 607 flights
- Evenings66% on time · p90 50 min · 842 flights
- Overnights59% on time · p90 70 min · 487 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 71% to 79% on time.
- Tuesdays79% on time · p90 30 min · 497 flights
- Wednesdays77% on time · p90 30 min · 497 flights
- Mondays77% on time · p90 40 min · 558 flights
- Thursdays76% on time · p90 30 min · 537 flights
- Fridays74% on time · p90 40 min · 557 flights
- Saturdays72% on time · p90 40 min · 429 flights
- Sundays71% on time · p90 45 min · 562 flights
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