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Route Reliability

Charleston → Washington

CHS–IAD · 442 miles · Charleston International Airport to Washington Dulles International Airport

85
Pretty Reliable
WanderNerd Reliability Score
84%
Arrive within 15 minutes
9 min
Average arrival delay
1.6%
Cancelled
1,057
Flights in the data

Data through May 2026.

United Airlines is the only airline in this data on this route, arriving on time 84% of the time across 1,057 flights. No comparison to make.

What the data says

Morning-you made the right choice.

CHS–IAD flights departing between 6–9 AM arrived on time 94% of the time, versus 78% between 12–3 PM.

Sunday scaries are real for this one.

CHS–IAD flights arrived on time 90% of the time on Mondays. On Sundays: 76%.

Ticking up lately.

CHS–IAD flights arrived on time 85% of the time over the last three months in the data, compared with 81% in the three months before that.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon90%(153 flights)
  • Tue84%(139 flights)
  • Wed86%(147 flights)
  • Thu86%(152 flights)
  • Fri82%(152 flights)
  • Sat86%(142 flights)
  • Sun76%(153 flights)
On-time by departure window
  • 3–6 AM84%(25 flights)
  • 6–9 AM94%(36 flights)
  • 9 AM–12 PM94%(281 flights)
  • 12–3 PM78%(354 flights)
  • 6–9 PM80%(342 flights)
On-time trend by month
90%
May

Jun 85% → May 90% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202585%113
July 202575%85
August 202585%89
September 202593%80
October 202587%82
November 202583%83
December 202575%76
January 202678%60
February 202689%71
March 202681%90
April 202684%99
May 202690%110

Same trip, other airports

Keep nerding

Based on 1,057 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.