Historical on-time performance
Charleston to Baltimore
472 miData through May 2026Source: US DOT · BTS
Flights on CHS–BWI arrive on time 80% of the time over the last 12 months.
On-time rate80%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled1.9%of scheduled flights
based on 1,231 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 timep9025 minCancel1.9%Flights1,231
Why flights run late
Delay causes
- Airline25%
- Weather2%
- Air traffic (NAS)17%
- Late aircraft55%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline8%
- Weather67%
- Air traffic (NAS)25%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 24 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 → BWI
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 — 92% on time.
- Mornings92% on time · p90 5 min · 1,095 flights
- Middays86% on time · p90 20 min · 912 flights
- Afternoons76% on time · p90 30 min · 536 flights
- Evenings72% on time · p90 40 min · 972 flights
- Overnights67% on time · p90 40 min · 143 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 79% to 85% on time.
- Wednesdays85% on time · p90 25 min · 486 flights
- Tuesdays84% on time · p90 20 min · 488 flights
- Sundays82% on time · p90 25 min · 577 flights
- Saturdays81% on time · p90 20 min · 437 flights
- Mondays81% on time · p90 25 min · 560 flights
- Thursdays81% on time · p90 25 min · 544 flights
- Fridays79% on time · p90 40 min · 566 flights
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