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Route Reliability

Baltimore → Charleston

BWI–CHS · 472 miles · Baltimore/Washington International Thurgood Marshall Airport to Charleston International Airport

82
Pretty Reliable
WanderNerd Reliability Score
81%
Arrive within 15 minutes
5 min
Average arrival delay
1.4%
Cancelled
1,253
Flights in the data

Data through May 2026.

Airlines on this route

  • Southwest Airlines81% on time · 1,232 flights
  • Spirit Airlines86% on time · 21 flights

Too little history on this route to call a winner. We rank airlines only after 100 flights each.

What the data says

Morning-you made the right choice.

BWI–CHS flights departing between 6–9 AM arrived on time 90% of the time, versus 71% between 3–6 PM.

Sunday scaries are real for this one.

BWI–CHS flights arrived on time 85% of the time on Saturdays. On Sundays: 75%.

Recent months have been rougher.

BWI–CHS flights arrived on time 80% of the time over the last three months in the data, compared with 89% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon80%(196 flights)
  • Tue83%(163 flights)
  • Wed83%(162 flights)
  • Thu79%(181 flights)
  • Fri81%(194 flights)
  • Sat85%(133 flights)
  • Sun75%(203 flights)
On-time by departure window
  • 6–9 AM90%(322 flights)
  • 9 AM–12 PM87%(157 flights)
  • 12–3 PM84%(177 flights)
  • 3–6 PM71%(225 flights)
  • 6–9 PM73%(349 flights)
  • 9 PM–12 AM—(2 flights)
On-time trend by month
78%
May

Jun 69% → May 78% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202569%117
July 202570%113
August 202577%99
September 202588%90
October 202581%118
November 202583%101
December 202583%100
January 202693%89
February 202691%80
March 202677%104
April 202685%109
May 202678%112

Same trip, other airports

Keep nerding

Based on 1,253 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.