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Airport Reliability

CHS · Charleston

Charleston International Airport

80%
Departures within 15 minutes
14 min
Average departure delay
77%
Arrivals within 15 minutes
2.4%
Departures cancelled

Based on 27,850 departures and 27,852 arrivals. Data through May 2026.

What the data says

Morning flights do better here.

Departures from CHS departing between 3–6 AM arrived on time 94% of the time, versus 66% between 9 PM–12 AM.

Sunday scaries are real for this one.

Departures from CHS arrived on time 83% of the time on Wednesdays. On Sundays: 76%.

When CHS gets messy

On-time by departure window
  • 3–6 AM94%(918 flights)
  • 6–9 AM91%(6187 flights)
  • 9 AM–12 PM87%(4929 flights)
  • 12–3 PM78%(4746 flights)
  • 3–6 PM73%(5003 flights)
  • 6–9 PM68%(5160 flights)
  • 9 PM–12 AM66%(144 flights)
On-time by weekday
  • Mon80%(4026 flights)
  • Tue83%(3618 flights)
  • Wed83%(3637 flights)
  • Thu80%(4007 flights)
  • Fri80%(4027 flights)
  • Sat81%(3607 flights)
  • Sun76%(4165 flights)
On-time trend by month
82%
May

Jun 76% → May 82% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202576%2441
July 202574%2422
August 202583%2233
September 202586%2085
October 202581%2394
November 202581%2277
December 202576%2242
January 202683%1898
February 202683%1828
March 202679%2298
April 202682%2456
May 202682%2513

Airlines departing CHS

Busiest routes from CHS

Based on 27,850 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.