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Route Reliability

Charleston → Baltimore

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

82
Pretty Reliable
WanderNerd Reliability Score
83%
Arrive within 15 minutes
3 min
Average arrival delay
1.9%
Cancelled
1,252
Flights in the data

Data through May 2026.

Airlines on this route

  • Southwest Airlines83% on time · 1,231 flights
  • Spirit Airlines71% 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.

CHS–BWI flights departing between 6–9 AM arrived on time 94% of the time, versus 72% between 3–6 PM.

Skip Monday if you can.

CHS–BWI flights arrived on time 90% of the time on Wednesdays. On Mondays: 79%.

Flights on this route

The breakdown

On-time by weekday
  • Mon79%(195 flights)
  • Tue88%(162 flights)
  • Wed90%(157 flights)
  • Thu83%(183 flights)
  • Fri80%(192 flights)
  • Sat84%(133 flights)
  • Sun81%(201 flights)
On-time by departure window
  • 6–9 AM94%(361 flights)
  • 9 AM–12 PM88%(220 flights)
  • 12–3 PM87%(134 flights)
  • 3–6 PM72%(197 flights)
  • 6–9 PM72%(311 flights)
On-time trend by month
82%
May

Jun 84% → May 82% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202584%115
July 202573%110
August 202582%98
September 202591%89
October 202581%118
November 202586%101
December 202582%100
January 202691%91
February 202682%77
March 202682%102
April 202683%109
May 202682%113

Same trip, other airports

Keep nerding

Based on 1,252 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.