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Route Reliability

Charleston → Denver

CHS–DEN · 1,449 miles · Charleston International Airport to Denver International Airport

68
Usually Fine
WanderNerd Reliability Score
72%
Arrive within 15 minutes
13 min
Average arrival delay
0.8%
Cancelled
647
Flights in the data

Data through May 2026.

Who flies it best

Ranked by on-time arrivals. Historical results, not predictions.

  1. 1.United Airlines74%439 flights
  2. 2.Southwest Airlines68%208 flights

What the data says

Morning flights do better here.

CHS–DEN flights departing between 6–9 AM arrived on time 90% of the time, versus 68% between 3–6 PM.

Saturday is the weak spot.

CHS–DEN flights arrived on time 78% of the time on Wednesdays. On Saturdays: 67%.

United Airlines has a slight edge here.

United Airlines arrived on time 74% of the time on this route; Southwest Airlines managed 68%.

Flights on this route

The breakdown

On-time by weekday
  • Mon76%(98 flights)
  • Tue69%(83 flights)
  • Wed78%(81 flights)
  • Thu71%(91 flights)
  • Fri75%(96 flights)
  • Sat67%(81 flights)
  • Sun68%(100 flights)
On-time by departure window
  • 3–6 AM—(6 flights)
  • 6–9 AM90%(89 flights)
  • 12–3 PM71%(105 flights)
  • 3–6 PM68%(429 flights)
  • 6–9 PM—(1 flights)
On-time trend by month
81%
May

Jun 57% → May 81% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202557%58
July 202557%56
August 202557%47
September 202575%47
October 202558%52
November 202583%47
December 202572%46
January 202689%55
February 202675%55
March 202683%60
April 202676%59
May 202681%48

Keep nerding

Based on 647 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.